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Preprint ARTICLE | doi:10.20944/preprints202410.1475.v1

Experimental Investigation on Atmospheric Microwave Plasma-Driven Nitrogen Fixation Using Metal-Organic Frameworks

Fang Zheng, Kai Feng, Shaokun Wu, Wei Xiao

Subject: Engineering, Chemical Engineering Keywords: microwave plasma; metal-organic framework materials; nitrogen oxides; synergistic effects

Online: 18 October 2024 (11:17:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202410.1011.v1

Superior Adsorption of Chlorinated VOC by Date Palm Seed Biochar: A Two-Way ANOVA Comparative Analysis with Activated Carbon

Rania Remmani, Marco Petrangeli Papini, Neda Amanat, Antonio Ruiz Canales

Subject: Engineering, Chemical Engineering Keywords: Biochar; Chlorinated solvents; Adsorption kinetics; Isotherms; Statistical analysis; Nanotube morphology

Online: 15 October 2024 (11:58:20 CEST)

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Preprint REVIEW | doi:10.20944/preprints202410.0999.v1

Thermodynamic Models of Solid Oxide Fuel Cell (SOFC): A Review

Vera Marcantonio, Lucrezia Scopel

Subject: Engineering, Chemical Engineering Keywords: SOFC; Aspen plus; renewable energy; hydrogen; energy system; fuel cell

Online: 14 October 2024 (11:27:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202410.0946.v1

Modeling the Production Process of Lignin Nanoparticles through Anti-Solvent Precipitation for Properties Prediction in Industrial Perspective

Girard Victor, Laurent Marchal-Heussler, Hubert Chapuis, Nicolas Brosse, Nadia Canilho, Isabelle Ziegler-Devin

Subject: Engineering, Chemical Engineering Keywords: lignin; nanoparticles; organosolv process; prediction model; anti-solvent precipitation

Online: 14 October 2024 (08:10:52 CEST)

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Preprint REVIEW | doi:10.20944/preprints202410.0722.v1

An Extensive Review of Leaching Models for Forecasting and Integrated Management of Surface and Groundwater Quality

Stephanos Giakoumatos, Christina Siontorou, Dimitrios Sidiras

Subject: Engineering, Chemical Engineering Keywords: Nitrates pollution; leachates model; nitrification; GES

Online: 10 October 2024 (07:09:33 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202410.0535.v1

Application of Artificial Neural Networks for Optimizing Enhanced Heavy Oil Recovery in the Niger-Delta

JUDE EMEKA ODO, DANIEL CHIDI MMADU

Subject: Engineering, Chemical Engineering Keywords: Artificial Neural Networks, Enhanced Oil Recovery, Niger Delta, Hot chemical flooding, Heavy oil

Online: 8 October 2024 (09:56:13 CEST)

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The decline of conventional oil reserves in Nigeria's Niger Delta region necessitates the exploration of alternative heavy oil recovery methods, particularly given that heavy oil constitutes nearly 20% of the region's estimated crude oil reserves. This study investigates the optimization of enhanced heavy oil recovery through the application of Artificial Neural Networks (ANN) and innovative hot chemical flooding techniques. The experimental phase involved the development of a novel chemical mix comprising dissolved liquid soap, scent leaf extract, bitter leaf extract, palm frond ash, xanthan gum, dry gin, and a unique alkali-surfactant mixture (DG + DPFA). These chemicals were tested at varying injection temperatures, and their respective recovery efficiencies were evaluated. For the ANN model development, key reservoir and operational parameters—porosity, permeability, oil specific gravity, and injection temperature—were utilized as input layers, with three hidden layers and one output layer representing the recovery efficiency. The ANN model successfully correlated the input parameters to recovery efficiencies, providing a robust prediction framework for enhanced heavy oil recovery. Software simulations conducted in parallel with the experimental work offered insights into future recovery potential and anticipated water cut profiles. Furthermore, the study presented mathematical correlations for each chemical flooding process, linking the input variables to recovery efficiency. The integration of ANN modelling and experimental validation establishes a comprehensive methodology for optimizing heavy oil recovery in the Niger Delta, suggesting that upstream companies should consider adopting hot chemical flooding strategies to enhance production rates and economic returns. These findings underscore the importance of leveraging advanced technologies and local resources to address the challenges of heavy oil recovery in declining conventional reservoirs.

Preprint ARTICLE | doi:10.20944/preprints202410.0065.v1

Prediction of Syngas Composition During Gasification of Lignocellulosic Waste Mixtures

Carlos Andrés Muñoz-Huerta, Gladys Jiménez-García, Luis Germán Hernández-Pérez, Rafael Maya-Yescas

Subject: Engineering, Chemical Engineering Keywords: Atomic balances; gasification of lignocellulosic wastes; gasification reactor; generalized stoichiometry; mass balances; synthesis gas

Online: 1 October 2024 (12:55:20 CEST)

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Preprint REVIEW | doi:10.20944/preprints202409.2435.v1

On the Exploitation of Lignin Slow Pyrolysis Products

Guido Busca, Elena Spennati, Matteo Borella, Alessandro A. Casazza, Gabriella Garbarino

Subject: Engineering, Chemical Engineering Keywords: biomass; lignin; pyrolysis; biochar, bio-oil; biofuels; antioxidants; pharmaceuticals; polymerization inhibitor; anti-knocking

Online: 1 October 2024 (08:46:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.2181.v1

An Electrochemical Characterisation of Silica-Zirconia Oxide Nanostructured Materials for Fuel Cells

Rudzani Sigwadi, Touhami Mokrani, Fulufhelo Nemavhola

Subject: Engineering, Chemical Engineering Keywords: mesoporous silica; tetraethyl orthosilicate; nanoparticles; cyclic voltammetry

Online: 27 September 2024 (07:50:26 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.1588.v1

Influence of the Weaving Method (Plain, Twill, Satin) on the Hydrodynamic Behavior of Filtration Membranes Based on Banana Pseudostem Fibres (Musa balbisiana)

NSOE MENGUE Jean Jacques Nestor, Amba victoria Essegni, Egbe daniel Daniel, Boudina aimé Marie, Kofa guillaume Patrice, Ndi koungou Sylvere, Kayem joseph Guiffo

Subject: Engineering, Chemical Engineering Keywords: Banana fibers; weaving; hydrodynamics; filtration

Online: 20 September 2024 (11:49:39 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.0919.v1

Multiphysics Studies of 3D Plate Fin Heat Exchanger Filled with Ortho-Para- Hydrogen Conversion Catalyst for Hydrogen Liquefaction

Liangguang Tang, Doki Yamaguchi, Jose Orellana, Wendy Tian

Subject: Engineering, Chemical Engineering Keywords: plate fin heat exchanger; ortho-para- hydrogen conversion; Multiphysics modelling; hydrogen liquefaction

Online: 12 September 2024 (11:29:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.0638.v1

Enhanced Acoustic Mixing in Silicon-Based Chips with Sharp-Edged Micro-Structures

Mehrnaz Hashemiesfahan, Pierre Gelin, Han Gardeniers, Wim De Malsche

Subject: Engineering, Chemical Engineering Keywords: sharp corners; fast mixing; acoustofluidics

Online: 9 September 2024 (08:30:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.0351.v1

Stochastic Plantwide Optimizing Control for an Acrylic Acid Plant

Andrés Felipe Duque Amaya, Ricardo Andres Tusso-Pinzón, Silvia Ochoa

Subject: Engineering, Chemical Engineering Keywords: plantwide control; stochastic plantwide optimizing control; acrylic acid

Online: 4 September 2024 (09:22:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.0235.v1

Innovative Polyelectrolyte Multilayer Nanofiltration Membrane Fabricated Through Spin-Spray Assisted Layer-by- Layer Assembly

Farid Fadhillah, Karim Kriaa, Fekri Abdulraqeb Ahmed Ali, Saad Aljlil

Subject: Engineering, Chemical Engineering Keywords: spin-spray coating; layer-by-layer; nanofiltration; reverse osmosis; fouling resistance; polyelectrolyte; multilayer; thin film composite

Online: 4 September 2024 (03:00:33 CEST)

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Preprint REVIEW | doi:10.20944/preprints202408.2051.v1

Sustainability of Municipal Wastewater Treatment

Jan Derco, Patrícia Guľašová, Maša Legan, Ronald Zakhar, Andreja Žgajnar Gotvajn

Subject: Engineering, Chemical Engineering Keywords: efficiency; emerging pollutants; energy savings; greenhouse emissions; macronutrients; microalgae; micropollutants; municipal wastewater treatment; sludge management; sustainability

Online: 28 August 2024 (11:44:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.1724.v1

Theoretical Analysis of Complex Center of Pressure (iCoP) on Immersed Circular Bodies

Oloche Eije, Annex Ogbu

Subject: Engineering, Chemical Engineering Keywords: Complex Centre of Pressure (iCoP); phase shifts; oscillations; immersion depth; circular body; waves and ripples; fluid dynamics; fluid-structure system

Online: 23 August 2024 (11:54:17 CEST)

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Preprint REVIEW | doi:10.20944/preprints202408.1723.v1

Ultrasonic Technology for Hydrocarbon Raw Recovery and Processing

Zhannur Myltykbayeva, Binur Khabasovna Mussabayeva, Yerdos Ongarbayev, Yerzhan Imanbayev, Dinara Muktaly

Subject: Engineering, Chemical Engineering Keywords: ultrasound; oil; bitumen; oil-bitumen rock; coal; oil shale

Online: 23 August 2024 (11:52:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.1412.v1

CFD-Based Performance Analysis of Hybrid MWCNTs–SiO₂ Nanofluids in Plate Heat Exchangers: Enhancing Heat Transfer with Minimal Pressure Drop

Saeed Zeinali Heris, Nima Zolfagharian, Seyed Borhan Mousavi, Shamin Hosseini Nami

Subject: Engineering, Chemical Engineering Keywords: Thermal conductivity; Convective heat transfer; Pressure drop; Nusselt number; Reynolds number; Heat exchanger

Online: 21 August 2024 (04:35:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.0839.v1

A Novel Modeling Optimization Approach for a Seven-channel Titania Ceramic Membrane in an Oily Wastewater Filtration System Based on Experimentation, Full Factorial Design, and Machine Learning

Mohamed Echakouri, Amr Henni, Amgad Salama

Subject: Engineering, Chemical Engineering Keywords: Oily Wastewater; Titania Ceramic Membrane; Fouling Control; Optimization; Statistical Modeling; Full Factorial Design; Multiple Linear Regression; Artificial Neural Network

Online: 12 August 2024 (23:46:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.0811.v1

Selectivities of Carbon Dioxide Over Ethane in Three Methylimidazolium- Based Ionic Liquids: Experimental Data and Modeling

Nadir Henni, Amr Henni, Hussameldin Ibrahim

Subject: Engineering, Chemical Engineering Keywords: ionic liquid; ethane; carbon dioxide; solubility; selectivity, equation of state

Online: 12 August 2024 (11:28:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.0620.v1

Design and Optimization of CO2 Recovery Process of Fire-Flooding Exhaust Based on Membrane Separation Method

CHANG Mingliang, PAN Jie

Subject: Engineering, Chemical Engineering Keywords: Fire-flooding exhaust; Membrane separation; Liquefaction; Rectification; optimize

Online: 9 August 2024 (00:21:44 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.0534.v1

Modeling Polymer Microencapsulation Processes using CFD and Population Balance Models

Masooma Qizilbash, Luis J. Del Valle, Alfredo Guardo Zabaleta

Subject: Engineering, Chemical Engineering Keywords: Computational Fluid Dynamics; Microencapsulation; population balance model; turbulent flow; mixing

Online: 7 August 2024 (14:11:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.0422.v1

Levitating Control System of Maglev Ruler Based on Active Disturbance Rejection Controller

Jiyuan Sun, Gengyun Tian, Zhaofeng Chen, Pin Li, Chunlin Tian, Zhenxiong Zhou

Subject: Engineering, Chemical Engineering Keywords: maglev; levitating control; active disturbance rejection control; precision detection

Online: 7 August 2024 (03:34:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.0262.v1

Synergizing Phenomenological and AI-Based Models with Industrial Data to Develop Soft Sensors for a Sour Water Treatment Unit

Danielle Gradin Queiroz, Francisco Davi Belo Rodrigues, Júlia do Nascimento Pereira Nogueira, Príamo A. Melo Jr., Maurício B. de Souza Jr.

Subject: Engineering, Chemical Engineering Keywords: sour water; soft sensor; environmental protection; machine learning; database; Aspen Plus Dynamics®; ; Random Forest; hybrid modeling

Online: 6 August 2024 (04:53:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.0058.v1

Sustainable Production of Lactic Acid Using Lolium perenne as Feedstock—A Comparative Study of Fermentation at Bench- and Reactor-Scale, and Ensiling

Ludovica Varriale, Jan-Niklas Hengsbach, Tianyi Guo, Katrin Kuka, Nils Tippkötter, Roland Ulber

Subject: Engineering, Chemical Engineering Keywords: bio-based economy; renewable resources; perennial ryegrass; fermentation; ensiling; lactic acid; Lactobacillus

Online: 2 August 2024 (03:44:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.2463.v1

Resources Optimization Using Pareto Analysis for Sea Water Desalination Plants

Nicolau Chirinza, Paulino Muguirrima, Federico A. Leon Zerpa, Alejandro Ramos-Martin, Carlos Alberto Mendieta Pino

Subject: Engineering, Chemical Engineering Keywords: Resources; Energy consumption; Desalination plants; Pareto analysis

Online: 30 July 2024 (23:54:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.2451.v1

Coating of Refractory Surfaces with Fine TiO₂ Particles via Gas‐Dynamic Cold Spraying

Olha Aleksieieva, Mustafa Bozoglu, Pavlo Tretiakov, Andrii Toporov, Sergiy Antonyuk

Subject: Engineering, Chemical Engineering Keywords: fireclay porosity; titanium dioxide coating; cold spraying; CFD simulation; particle deposition

Online: 30 July 2024 (13:44:26 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.2181.v1

Methyl Orange Adsorption Using Chitosan-Based Composite Aerogels Produced by Supercritical Gel Drying

Alessandra Zanotti, Lucia Baldino, Stefano Cardea, Ernesto Reverchon

Subject: Engineering, Chemical Engineering Keywords: chitosan; graphene oxide; supercritical gel drying; adsorption; methyl orange; kinetics

Online: 26 July 2024 (13:06:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.2027.v1

A New Air Assisted Flare Tip Design for Managing Gas Flare Emissions (CFD Analysis)

Ahmed A Maaroof, Joseph D Smith, Mohammed H S Zangana

Subject: Engineering, Chemical Engineering Keywords: CFD; Gas Flare; Soot Emissions; CE; DRE

Online: 26 July 2024 (04:26:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.1963.v1

Markov Chain Based Statistic Model for Predicting Particle Movement in Circulating Fluidized Bed (CFB) Risers

Yaming Zhuang, Fangfang Liu

Subject: Engineering, Chemical Engineering Keywords: Markov chain; statistic model; fluidized bed; CFD-DEM

Online: 24 July 2024 (12:41:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.1794.v1

Integrating MILP, Discrete-Event Simulation, and Data-Driven Models for Distributed Flow Shop Scheduling using Benders Cuts

Roderich Wallrath, Meik B. Franke

Subject: Engineering, Chemical Engineering Keywords: Benders decomposition; distributed flow shop scheduling; model integration; mixed-integer programming; discrete-event simulation; data-driven optimization

Online: 23 July 2024 (13:03:18 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.1663.v1

Development of Semi Empirical and Machine Learning Models for Photo-Electrochemical Cells

Niranjan Sunderraj, S.R. Dhanushkodi, Ramesh kumar Chidambaram, B. Węglowski, Dorota Skrzyniowska, Mathias Schmid, Michael William Fowler

Subject: Engineering, Chemical Engineering Keywords: Photochemical cell,; Pc-V model; electron-hole transfer; recombination; Space charge width

Online: 22 July 2024 (09:46:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.1488.v1

A Life Cycle Analysis Applied to Municipal Effluents in Africa Has the Potential to Make a Significant Contribution to the Field

Nicolau Chirinza, Paulino Muguirrima, Tania García-Ramírez, Federico A. Leon Zerpa, Carlos Alberto Mendieta Pino

Subject: Engineering, Chemical Engineering Keywords: Life Cycle (LCA); Natural Treatment; Climate Change

Online: 18 July 2024 (10:50:15 CEST)

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The objective of the described activity is to develop technologies or proposals that can be implemented within the cycle to enhance the relationship between climate change, water, energy, and food. The focus is on analyzing natural treatment systems for wastewater (NTSW) within the context of Macaronesia, considering factors such as life cycle assessment (LCA), carbon footprint, impacts, and mitigation capacity. The analysis of real case data from the Canary Islands and Cape Verde will inform the development of appropriate technologies tailored to different areas and scales within Macaronesia. This work includes a comprehensive life cycle analysis of the Santa Catarina (Cape Verde) NTSW. This analysis encompasses: a) Inventory analysis of the construction phase: This involves the assessment of inputs and outputs associated with the construction of the NTSW, including materials, energy consumption, transportation, and waste generation. The maintenance and operation phase is then evaluated, with a focus on the ongoing maintenance and operation activities required for the NTSW, including energy consumption, water usage, chemical inputs (if any), labour, and equipment maintenance. Finally, the impacts of the NTSW are evaluated. The environmental, social, and economic impacts generated by the NTSW are assessed. This includes an analysis of factors such as carbon emissions, water usage, land use, ecosystem impacts, human health effects, and economic costs. By conducting a comprehensive analysis of the Santa Catarina NTSW, the document aims to provide insights into the environmental performance and sustainability of the system. This information can then be used to identify areas for improvement, develop mitigation strategies, and inform decision-making processes regarding wastewater treatment technologies in Macaronesia. Furthermore, lessons learned from real case studies in the Canary Islands and Cape Verde can be applied to similar regions within the Macaronesia archipelago.

Preprint ARTICLE | doi:10.20944/preprints202407.1138.v1

Multi Parametric Investigations on White etching Crack formation in 6203 Ball Bearings

Manuel Zuercher, Eberhard Schluecker, Christian Spaeth, Walter Holweger

Subject: Engineering, Chemical Engineering Keywords: white etching cracks (WEC); lubrication; electricity; DGBB test rig

Online: 15 July 2024 (10:16:06 CEST)

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Preprint REVIEW | doi:10.20944/preprints202407.1069.v1

Direct Solar Thermal Water Splitting Using Iron Electrodes at High Temperatures - A Review

Manuel Fuentes, Diego Pulido, Edward Fuentealba, Alvaro Soliz, Norman Toro, Atul Sagade, Felipe M. Galleguillos Madrid

Subject: Engineering, Chemical Engineering Keywords: Solar thermochemical; water splitting; iron corrosion; solar reactors

Online: 12 July 2024 (14:14:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.1033.v1

Sustainability Indicators to MSW Treatment Assessment: The Rio de Janeiro Case Study

Júlia P. Oliveira, Fernando L. P. Pessoa, Ana Mehl, Flávia C. Alves, Argimiro R. Secchi

Subject: Engineering, Chemical Engineering Keywords: municipal solid waste; waste-to-energy; sustainability tripod; bioenergy

Online: 12 July 2024 (11:53:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.0814.v1

Enhancing Understanding of Siloxane Surface Properties and Functional Group Effects on Water Deoxygenation

Fryad mohammed Sharif, Sohail Murad, Saif Talal Manji

Subject: Engineering, Chemical Engineering Keywords: molecular dynamic; membrane; siloxane; functional group; deoxygenation

Online: 10 July 2024 (05:07:54 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.0589.v1

Enhancing Sustainability: Brewer's Spent Grain-based Biochar as a Renewable Energy Source and Agriculture Substrate

Romina Zabaleta, Erick Torres, Eliana Sanchez, Rodrigo Torres-Sciancalepore, María Paula Fabani, Germán Mazza, Rosa Rodriguez

Subject: Engineering, Chemical Engineering Keywords: brewer’s spent grain biochar; pyrolysis temperature; bioenergy indices; germination test

Online: 8 July 2024 (08:35:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.0448.v1

Optimization of High-Temperature CO₂ Capture by Lithium Orthosilicate-Based Sorbents Using Response Surface Methodology

Eleonora Stefanelli, Flavio Francalanci, Sandra Vitolo, Monica Puccini

Subject: Engineering, Chemical Engineering Keywords: solid sorbent; lithium orthosilicate; CO2 capture; high-temperature; adsorption; design of experiments

Online: 5 July 2024 (06:59:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.0146.v1

Experimental Visualization Study of Two-Phase Flow Dynamics in Closed-Loop Pulsating Heat Pipes Using Fe₃O₄/Water

Seyed Borhan Mousavi

Subject: Engineering, Chemical Engineering Keywords: Pulsating heat pipes (PHP); Two-phase flow patterns; Flow oscillating; Liquid slug; Vapor plug

Online: 2 July 2024 (13:29:38 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.1056.v1

Chitosan-Based Oleogels: Emulsion Drying Kinetics and Physical, Rheological and Textural Characteristics of Olive Oil Oleogels

Mario Lama, Leticia Montes, Daniel Franco, Amaya Franco-Uría, Ramón Moreira

Subject: Engineering, Chemical Engineering Keywords: Color; Marine Biopolymer; Novel bioproduct; Oil binding capacity; Oil oxidation; Texture; Viscoelasticity; Water diffusivity.

Online: 18 June 2024 (04:38:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.0712.v1

Treatment of Oily Effluents Using a Bacterial Cellulose Membrane as the Filter Bed

Alexandre D’Lamare Maia de Medeiros, Cláudio José Galdino da Silva Junior, Italo José Batista Durval, Thais Cavalcante de Souza, Yasmim de Farias Cavalcanti, Andréa Fernanda de Santana Costa, Leonie Asfora Sarubbo

Subject: Engineering, Chemical Engineering Keywords: microbial cellulose; water analysis; biopolymer; oil industry

Online: 11 June 2024 (15:45:40 CEST)

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Preprint REVIEW | doi:10.20944/preprints202406.0592.v1

Comparative study of photocatalytic activity of metals- and non-metals doped ZnO and TiO2 nanocatalysts for advanced photocatalysis

Hamad AlMohamadi, Sameer A. Awad, Ashwani Kumar Sharma, Normurot Fayzullaev, Arístides Távara-Aponte, Lincoln Chiguala-Contreras, Abdelfattah Amari, Carlos Rodriguez-Benites, Mohamed A. Tahoon, Hossein Esmaeili

Subject: Engineering, Chemical Engineering Keywords: Zinc oxide; Titanium dioxide; Photocatalysis; Dopants; Organic contaminants; Wastewater

Online: 11 June 2024 (08:18:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.0341.v1

Hydrothermal Co-Liquefaction of Sugarcane Bagasse and Residual Cooking Soybean Oil for Bio-Crude Production

Matheus Oliveira, Maria Pelisson, Fabiane Hamerski, Luís Ricardo Shigueyuki Kanda, Fernando Voll, Luiz Pereira Ramos, Marcos Lúcio Corazza

Subject: Engineering, Chemical Engineering Keywords: bio-crude; hydrothermal co-liquefaction; ethanol; residual soybean oil; sugarcane bagasse

Online: 6 June 2024 (07:57:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.0246.v1

Identification of Molecules from Tomato Plant Residues Using Sustainable Green Chemicals

Adrian Drescher, Lisa Schwingshackl, Marlene Kienberger

Subject: Engineering, Chemical Engineering Keywords: tomato residue; extraction; green chemistry; bioactive molecules; biorefinery

Online: 5 June 2024 (10:49:38 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.0203.v1

Rheology of Suspensions Thickened by Cellulose Nanocrystals

Rajinder Pal, Karthika Pattath

Subject: Engineering, Chemical Engineering Keywords: rheology; non-Newtonian; shear-thinning; viscosity; suspension; nanocrystals, cellulose nanocrystals; nanoparticles; power-law model

Online: 4 June 2024 (14:07:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1790.v1

The Use of Pareto Analysis and Pilots Testing with New Generation RO Membranes to Take Decision for the Improvement of the Energy Efficiency

Paulino Muguirrima, Nicolau Chirinza, Federico A. Leon Zerpa, Alejandro Ramos Martín, Carlos Alberto Mendieta-Pino

Subject: Engineering, Chemical Engineering Keywords: Pilot; Energy consumption; Reverse osmosis; Desalination plants; Pareto analysis

Online: 28 May 2024 (08:58:27 CEST)

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Preprint REVIEW | doi:10.20944/preprints202405.1617.v1

Advances on Catalyst Support Modification and their Effect on Fischer Tropsch Synthesis: A Review

Ntebogang Thibanyane, Joshua Gorimbo, Yali Yao

Subject: Engineering, Chemical Engineering Keywords: support modification; metal-support interaction; inverse model; activity; selectivity

Online: 24 May 2024 (09:52:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1464.v1

Anionic Hydrogels from Date Palm Waste for Dye Adsorption in Wastewater Treatment

Farid Fadhillah, Abdulrahman G. Alhamzani, Khaled Bin Bandar, Abdullah Alshamari, Saad Aljlil, Abdelrahman G. Gadallah, Mohamed Ahmed Habib, Mortaga M. Abou-Krisha, Mona A. Abdel-Fatah

Subject: Engineering, Chemical Engineering Keywords: dye wastewater treatment; cellulose nanofiber; bio-adsorbent; palm date leaves; methylene blue

Online: 23 May 2024 (02:55:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1102.v2

Modelling, Optimising and Improving Metal Foam and Porosity of PEMFCs

Ali Algaddafi, Siham Hasan

Subject: Engineering, Chemical Engineering Keywords: Direct Current (DC), Fuel Cell (FC), Metal Foam, Proton Exchange Membrane Fuel Cell (PEMFC), Porosity.

Online: 20 May 2024 (10:20:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1102.v1

Modelling, Optimising and Improving Metal Foam and Porosity of PEMFCs

Ali Algaddafi, Siham Hasan

Subject: Engineering, Chemical Engineering Keywords: Direct Current (DC), Fuel Cell (FC), Metal Foam, Proton Exchange Membrane Fuel Cell (PEMFC), Porosity.

Online: 16 May 2024 (12:05:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.0830.v1

Production of Polymeric Films from Orange and Ginger Waste for Packaging Application and Investigation of Mechanical and Thermal Characteristics of Biofilms

Raouf Moaveni, Mohammad Ghane, Parham Soltani, Akram Zamani, Sunil Kumar Ramamoorthy

Subject: Engineering, Chemical Engineering Keywords: biofilm; bioplastic; orange waste; ginger waste; mechanical properties; thermal properties

Online: 13 May 2024 (10:24:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.0705.v1

Assessing Digestate at Different Stabilization Stages: Application of Thermal Analysis and FTIR Spectroscopy

Silvia González-Rojo, Daniela Carrillo-Peña, Ruben González, Xiomar Gómez

Subject: Engineering, Chemical Engineering Keywords: anaerobic stabilization; thermal valorization; mineralization; activation energy

Online: 13 May 2024 (02:53:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.0694.v1

Preparation of quick-dissolving nanofibre face masks based on Needleless Electrostatic spinning

Jingyi Hu, Xiaojie Chen, Jianmin Jiang, Renbiao Mai, Han Wang, Qiming Xu, Ting Zhang

Subject: Engineering, Chemical Engineering Keywords: needleless; facial mask; electrospinning; nanofiber

Online: 10 May 2024 (12:22:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.0569.v1

Forcados Asphaltene and Its Combustion Characteristics for Future Fuel Examination

Farooq Abubakar Atiku, Christian Onukaogu Kerry, Abdulaziz Mohammed Hassan, Abdulfatah Abdu Yusuf, Zainab Ibrahim Sarkin Gobir Adiya

Subject: Engineering, Chemical Engineering Keywords: Forcadous Asphaltene; Heavy Fuel Fractions; Combustion; Forcadous Crude Oil; Future Fuel Examination; Combustion Characteristics ;

Online: 9 May 2024 (09:15:21 CEST)

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The high dependence on light crude oil as the main source of energy in automobiles., industrial processes, source of raw material for various industrial synthesis have made the heavy crude more available in the world and open for research work on its potentials as a source of energy for the increasing population of the world in areas like energy source for powering big marine engines, energy source in heavy industrial machines e.t.c. Though the relatively unfavourable characteristics of heavy fuel oil such as; high viscosity, high probability of precipitating is a reasonable challenge to the possible utilization of heavy fuel as a source of energy in the areas highlighted above. These issues of heavy fuel oil are largely due to the presence of Asphaltene in it which is a large complex hydrocarbon in heavy fuel oil. Understanding the combustion potential of asphaltene is therefore an interesting and challenging problem that has attracted increasing attention from both academia and industry. This research work is aimed at carrying combustion studies on the Forcados (Ni-geria) heavy fuel fraction asphaltene HFFA extracted from Forcados crude Oil and examining its combustion characteristics with the view to examine it for future sweet heavy fuel generation for it source got low sulphur content, to ascertain the volatile composition, moisture and ash content. The HFFA extracted to determine physical characteristics of the HFFA extracted for fuel properties potentialities and this study was carried out to evaluate the chemical constituents of forcadous asphaltene lead-ing to the generaration of HFFA using GCMS. The Forcados asphaltene showed some good fuel properties when subjected to ce-tane number, API gravity, flash point and cloud point parameter test. Probing further with AAS for trace metal presence showed some high concentration on Chromium (Cr), Nickel (Ni), Iron (Fe), Lead (Pb), Cadmium (Cd), Copper (Cu), Manganese (Mn) and Zinc (Zn) indicating the potential for residual and soot formation after combus-tion. But still being a sweet asphaltene from Nigerian sweet crude source will be de-void of corrosive effect on machineries and heavy fuel engine if used to power it as in the case of high sulphur content in Venezuelan crude oil and some other world. The GCMS showed the decomposition of heavy crude asphaltene peaks and sig-naling the presence of heavy fuel fraction in the composition of the asphaltene while the FTIR and the UV-VIS identified the various functional groups in the compounds and the identification of signals that cannot be seen in the normal spectrum respec-tively.

Preprint REVIEW | doi:10.20944/preprints202405.0429.v1

Unveiling the Potential of Cryogenic Post-Combustion Carbon Capture: From Fundamentals to Innovative Processes

Mauro Luberti, Erika Ballini, Mauro Capocelli

Subject: Engineering, Chemical Engineering Keywords: CO₂ sequestration; cryogenics; thermodynamics; desublimation; process configuration; energy consumption

Online: 8 May 2024 (15:21:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.0195.v1

Process Simulation of Post-combustion CO₂Capture Using Alkanolamines

Parvane Saeid, Amaani Malek, Mohammad Zeinolabedini, Nejat Rahmanian

Subject: Engineering, Chemical Engineering Keywords: Carbon capture; monoethanolamine; energy consumption; post-combustion; process simulation; Aspen Hysys

Online: 6 May 2024 (08:52:44 CEST)

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Preprint REVIEW | doi:10.20944/preprints202404.1988.v1

Post-Removal of Phosphorus from Biologically Treated Wastewater and Recovering It as Fertilizer. A Pilot-Scale Attempt—The Project PhoReSe

Kyriaki Kalaitzidou, Mannassis Mitrakas, Anastasios Zouboulis

Subject: Engineering, Chemical Engineering Keywords: phosphorus recovery; sustainability; fertilizer; secondary (treated) effluent; adsorption; chemical precipitation; wastewater management

Online: 30 April 2024 (10:04:41 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1699.v1

Novel Topside and Subsea Production Optimization, Operational Scheduling, and a Generic Plantwide MPC for Process Systems Control and Production Maximization: Oil, Gas, Water and Utilities Decision-Making with Offloading to Supply Chains and Sustainability

Alexandre Cesar Balbino Barbosa Filho, Marcelo Farenzena, Jorge Otavio Trierweiler

Subject: Engineering, Chemical Engineering Keywords: topside; subsea; planning and scheduling; plantwide model predictive controller; optimization under uncertainty

Online: 26 April 2024 (07:47:34 CEST)

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The main challenges in oil platforms are how to define optimal setpoints and decision-making for controlling variables due to many existing dynamical production uncertainties while conceding safe operation and minimizing discharge to sea and atmosphere without killing plantwide inventory. A novel scheduling model to optimize the whole essential units of an oil platform production gathering topside and subsea variables is disclosed. A proper topside and subsea scheduling model enables and creates harmony between optimal production, supply chain, costs, and market dynamics, satisfying demands, environmental and operations constraints leading to stability. The interest of the present research lies in determining the optimal topside and subsea operational settings and decision-making, establishing maximum E&P performance and production control setpoints while predicting and manipulating reservoir lifespan and its revitalization. This objective is attained through a novel multiperiod large-scale model for the planning and operational production scheduling and model predictive control (MPC) in oil platforms complying with sustainability, profitability, platform design capacities, and offloading of oil and gas to supply chains or to pipeline exportation. The present model details heat and mass transfer, PVT, flow profiles along a planning horizon and can be used to any oil platform since comprises all the essential unit operations for oil, gas, CO₂, H₂S and water. The model maximizes the total oil production over any planning horizon. The model is versatile, and decision-making can be either linear or nonlinear but rather a MILP or LP as best choice on optimizing large-scale systems. If the model is applied with auto rescheduling on site within variable hours or minutes, it becomes a real-time optimization schedule approach. Due to its high-velocity performance and robustness, a novel multi-objective function strategy, acting as an LP generic plantwide MPC with industrial scope to maximize production while controlling the process is presented, and as an example is here used to control slug flow to avoid equipment trips and inventory instability, at the same time production is maximized. The output from the decision-making was compared to actual plant data, and the results proved compliance to the design capacity with process safety and sustainability. Comparing to official Brazil's government data for oil, the case study showed superiority to the same size platforms, like FPSOs P-75 and MV32, e.g., more than 101.5% more capacity to produce oil in beginning of campaign after first oil, and 10.5% during campaign. The present work indicates that: 1) the production of millions of barrels is being delayed or left aside; 2) not scheduling production harms the environment and diminish process safety; 3) not scheduling production can create stochastic supply chain deliveries instead of organizing it by deterministic offloading days; 4) scheduling is essential to manipulate, revitalize and monitor reservoir's pressure and content under uncertainty; 5) the oil platform can be automatic optimized by a plantwide MPC reducing human activity/dependency; 6) scheduling gives more transparency to stakeholders and contractors by forecasting business data and capability, and can design, develop or enable new businesses.

Preprint ARTICLE | doi:10.20944/preprints202404.1336.v1

Bimetallic dioxomolybdenum(VI) Complex Based on bis(2-Pyridinecarboxamide) Ligand As Effective Catalyst for Fuel Desulfurization

Salete Balula, Fatima Mirante, André Silva, Sandra Gago

Subject: Engineering, Chemical Engineering Keywords: Oxidative desulfurization; Diesel; Multicomponent Model Fuel; Dioxomolybdenum complex; Hydrogen Peroxide

Online: 22 April 2024 (12:31:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1262.v1

Plant-Powered Plates: A Life Cycle Assessment of Plant-Based Meats in Tackling Climate Change

Meshach Tang, Taghi Miri, Fakhteh Soltani, Helen Onyeaka, Zainab T. Al-Sharify

Subject: Engineering, Chemical Engineering Keywords: life cycle assessment; plant-based meat analogue; greenhouse gas emissions; soy protein isolate; beef burger

Online: 18 April 2024 (14:04:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1006.v1

CH4 Adsorption in Wet Metal-Organic Frameworks Under Gas Hydrate Formation Conditions Using Large Reactor

Jyoti Shanker Pandey, Nehir Öncü, Nicolas Von Solms

Subject: Engineering, Chemical Engineering Keywords: Metal Organic Framework; high pressure isotherms; gas hydrates; CH4 storage

Online: 16 April 2024 (09:23:44 CEST)

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Nanoporous materials, such as Metal-Organic Frameworks (MOFs), are renowned for their high selectivity as gas adsorbents due to their specific surface area, nanoporosity, and active surface chemistry. A significant challenge for their widespread application is their behavior and reduced gas uptake in wet conditions, attributed to competitive adsorption between gas and water. The current understanding of gas adsorption in wet materials is constrained by studies that utilize only small amounts of powdered porous materials (in the milligram range) within very small reactors (1-5 mL). This leaves a significant gap in knowledge about gas adsorption behaviors in larger reactors and when MOF sample sizes are increased (to the gram scale) for scaling up the process. Additionally, there is a notable dearth of experimental research in situations where MOFs are heavily saturated with water. To address these gaps, this study measures CH4 adsorption in MOFs under conditions of high moisture content, using larger samples of MOFs (in grams) and a large volume reactor. We selected commercially available MOFs, including HKUST-1, ZIF-8, MOF-303, and activated carbon. A high-pressure isotherms (at T = 274.15 K) using volumetric approach were measured to qualitatively compare the moles of gas adsorbed under both dry and wet conditions across different MOFs and weights. Experimental results show that the presence of water led to a decrease in total CH4 mmol adsorption in MOFs, with a more significant decrease observed in hydrophilic MOFs compared to hydrophobic ones. For hydrophilic MOFs, presence of crossover isotherms at crossover pressure provided evidence of water's conversion to hydrate and its positive role in enhancing total gas uptake, which varied among different hydrophilic MOFs. Oversaturated MOFs showed a larger deviation between dry and wet cases at higher pressures. The high-pressure isotherm data confirm the positive role of hydrophilic MOFs in the conversion of water to hydrate in oversaturated MOFs when MOFs sample size is large.

Preprint ARTICLE | doi:10.20944/preprints202404.0771.v1

Decoupling Interaction for CFD-DEM Simulations of Bubbling Fluidized Bed

Yanggui Li, Heping Wang, Guorong Wu

Subject: Engineering, Chemical Engineering Keywords: multiphase flow; fluidization; simulation; CFD-DEM

Online: 11 April 2024 (09:26:52 CEST)

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Preprint REVIEW | doi:10.20944/preprints202404.0442.v1

Intelligent Petroleum Processing: A Short Review on Applying AI/ML to Petroleum Products Optimization

Abdallah Alzahawy, Hayder Issa

Subject: Engineering, Chemical Engineering Keywords: Intelligent petroleum processing; petroleum products optimization; machine learning techniques; gasoline property prediction; process control and operational efficiency

Online: 5 April 2024 (13:18:04 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0152.v1

Enhancing Lubricating Oil Performance through the Integration of Viscosity Improvers in Mono-Grade and Multi-grade Blends

NNADIKWE JOHNSON, IHEME CHIGOZIE

Subject: Engineering, Chemical Engineering Keywords: Mono-Grade; Multi-Grade; Blends; Temperature; Lubricants; Quality; Product

Online: 2 April 2024 (08:53:06 CEST)

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ABSTRACT Lubricants play a crucial role in reducing friction and wear between surfaces in relative motion. Engine oil, as a lubricant, is specifically designed to minimize friction and wear between the moving parts of different equipment and machinery. Engine oil blending serves the purpose of adjusting the variety of lubricants available to meet specific performance requirements. Through blending, it is possible to tailor the characteristics of the lubricating oil, such as viscosity, stability, and additive content, to optimize its effectiveness in reducing friction, protecting engine components, and enhancing overall equipment performance. By customizing lubricant formulations through blending, manufacturers can address the diverse lubrication needs of modern engines and machinery, ensuring smooth operation, longevity, and efficiency.To enhance the quality of the lubricant and achieve the desired high-performance multi-grade engine oil, a systematic approach was followed. The process began with testing the specific gravity of the oil using a hydrometer and thermometer to ensure accurate measurements. Subsequently, 5 liters of base oil were carefully measured and poured into a stainless steel reactor pot to serve as the blending vessel. Following this, 1 liter of paraffin oil (100N) was added to the base oil to introduce specific properties to the blend. To further optimize the formulation, 0.42 kg (7% of the total blend) of additives, including a selection of specific performance-enhancing compounds, was incorporated. These additives, such as Aspen, Tackifier, and other essential components like anti-wear, corrosion inhibitors, detergents, dispersants, and antioxidants, were meticulously measured and added to the mix. Through this precise blending process, the goal was to craft a high-quality multi-grade engine oil that meets the stringent performance requirements for various operating conditions and equipment types. After the melted Aspen and dissolved tackifier were added to the mixture, thorough stirring was carried out to ensure uniform distribution until a homogeneous blend was achieved. The mixture was then exposed to heat to facilitate the reaction between the base oil and additives, reaching a temperature of 70°C for optimal blending. Subsequently, 0.5 kg of viscosity index improver was introduced into the mixture and stirred continuously for a period of 5 minutes to ensure proper integration. Following this step, 5 grams of dye were carefully added to the mixture, and stirring was continued to evenly disperse the coloring agent throughout the blend. This meticulous process aimed to ensure that all components were effectively incorporated, facilitating the production of a high-quality, customized multi-grade engine oil with enhanced performance characteristics and optimal lubricating properties. After subjecting the mixture to a temperature of 70°C, the heat source was removed, allowing the product to gradually cool down to room temperature, which was estimated to be around 30°C. Following this cooling process, the product underwent a filtration step to remove any residual impurities present in the mixture. A sample of the purified product was then extracted for further analysis. Quality control tests were meticulously carried out on the sample to ensure that the product met the rigorous standards set by the Standard Organization of Nigeria (SON). The results obtained from the quality control tests were highly promising, indicating that the product indeed complied with the stringent specifications outlined by the regulatory body. This adherence to quality standards is essential in ensuring the product's reliability and performance in various applications. The successful outcome of the quality control test underscores the meticulous attention to detail and commitment to excellence in the production process. The rigorous quality control procedures implemented in the analysis of the product highlight the commitment to upholding high standards of quality and safety in the manufacturing process. By consistently meeting and exceeding industry regulations and standards, the product not only demonstrates its reliability but also reflects a dedication to customer satisfaction and product excellence. The adherence to the SON standards showcases a commitment to producing top-quality products that meet the needs and expectations of consumers and industry stakeholders alike.

Preprint ARTICLE | doi:10.20944/preprints202403.1781.v1

Batch To Continuous: From Laboratory Recycle Trickle Bed Test Reactor Data to Full Scale Plant Preliminary Design—A Case Study Based on the Hydrogenation of Resorcinol

Steve D. Pollington, Bal S Kalirai, E. Hugh Stitt

Subject: Engineering, Chemical Engineering Keywords: flow chemistry; hydrogenation; resorcinol; continuous; recycle trickle-bed; process design

Online: 28 March 2024 (15:00:05 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1749.v1

Electrochemical Characterization of Electrodeposited Copper Catalyst for CCU

Corentin Penot, Kranthi Kumar Maniam, Shiladitya Paul

Subject: Engineering, Chemical Engineering Keywords: Electrodeposition; Copper; Electrochemical CO2 reduction; Corrosion; Amine CO2 capture; Carbon capture and utilization

Online: 28 March 2024 (09:24:54 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1607.v1

Thermal Decomposition of Bio-Based Plastic Materials

Inés Oliver, Juan A. Conesa, Andres Fullana

Subject: Engineering, Chemical Engineering Keywords: bioplastic; pyrolysis; circular economy; thermoplastic starch (TPS); waste management

Online: 26 March 2024 (14:34:29 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1537.v1

Heteropolyacids@Silica Heterogeneous Catalysts to Produce Solketal from Glycerol Acetalization

Catarina N. Dias, Isabel C.M.S. Santos-Vieira, Carlos R. Gomes, Fátima Mirante, Salete S. Balula

Subject: Engineering, Chemical Engineering Keywords: acetalization; solketal; heteropolyacids; mesoporous silica

Online: 26 March 2024 (07:27:48 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1442.v1

Revolutionizing Power: Unleashing the Potential of Dynamic Mathematical Model Simulation for Multi-compartment Rotor Compressed Combustion Engines

NNADIKWE JOHNSON, UME CYRIL SUNDAY

Subject: Engineering, Chemical Engineering Keywords: Rotor; engine; CFD; Fuel-air; flow; flows; turbulence; C.I

Online: 25 March 2024 (08:47:28 CET)

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As the demand for fossil fuels continues to rise and their availability becomes increasingly limited, it is crucial to explore innovative approaches to optimize fuel combustion in existing systems. Among various engines, diesel engines are heavily reliant on fluid motion within the engine cylinder, which plays a critical role in fuel-air mixing. This abstract focuses on the potential of dynamic mathematical model simulation for multi-compartment rotor compressed combustion engines, aiming to revolutionize power generation by enhancing fuel burning efficiency. By leveraging advanced simulation techniques, this research seeks to unlock new insights into fluid dynamics and optimize fuel-air mixing, leading to more efficient and sustainable energy utilization. Through this exploration, we aim to pave the way for groundbreaking advancements in the field of combustion engines, ultimately contributing to a greener and more sustainable future. In the realm of internal combustion engines, the fluid dynamics within the engine cylinder greatly influence the combustion processes and heat transfer. For compression ignition (C.I) engines, both the bulk gas motion and turbulence characteristics play vital roles in engine performance. This study focuses on enhancing the combustibility of the fuel-air mixture in C.I engines by modifying the engine design to induce turbulence through squish and tumble flows. The modification involves creating multiple compartments on the rotor crown, comprising three small chambers spaced 120º apart. By implementing this design, the aim is to optimize the fuel-air mixing and improve the overall combustion efficiency. Through comprehensive analysis and experimentation, we seek to revolutionize C.I engine technology and pave the way for more efficient and environmentally-friendly power generation. In this study, the performance of a compression ignition (C.I) engine with a multiple compartment rotor has been analyzed under motoring conditions using computational fluid dynamics (CFD) simulations with FLUENT software. The obtained results have been compared with those of a base C.I engine. The analysis focused on the effects of the modified engine design on the tumble ratio and squish velocity, which are important parameters for fuel-air mixing and combustion efficiency. The results indicated a significant improvement with the modified engine, with a 35% increase in tumble ratio and a 31% increase in squish velocity compared to the base engine. These findings suggest that the modified engine design has the potential to enhance fuel-air mixing and combustion performance, leading to improved overall engine efficiency. This research presents promising insights into the optimization of C.I engine design and contributes to the development of more efficient and environmentally-friendly power generation technologies..

Preprint ARTICLE | doi:10.20944/preprints202403.1344.v1

Enhancing Alginate Hydrogels as Possible Wound Healing Patches: The Synergistic Impact of Reduced Graphene Oxide and Tannins on Mechanical and Adhesive Properties

Sebastián Carrasco, Luisbel González, Mauricio Tapia, Bruno F. Urbano, Claudio Aguayo, Katherina Fernández

Subject: Engineering, Chemical Engineering Keywords: alginate hydrogel; reduced graphene oxide; tannins; mechanical properties; adhesive properties

Online: 22 March 2024 (09:21:10 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1303.v1

Transitioning to a Hydrogen Economy: Exploring the Viability of Adapting Natural Gas Pipelines for Hydrogen Transport Through a Case Study on Compression vs. Looping

Abubakar Jibrin Abbas, Salisu Kwalami Haruna, Martin Lawrence Burby, Idoko Job John, Kabir Yar'adua Hassan

Subject: Engineering, Chemical Engineering Keywords: Gas pipeline expansion; Hydrogen; compressor station; looping; pipeline economics

Online: 21 March 2024 (12:52:10 CET)

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The growing importance of hydrogen as an energy carrier in a future decarbonized energy system has led to a surge in its production plans. However, the development of infrastructure for hydrogen delivery, particularly in the hard-to-abate sectors, remains a significant challenge. While the construction of new pipelines entails substantial investment, repurposing existing pipelines offers a cost-effective approach to jump-starting hydrogen networks. Many European countries are exploring the possibility of utilizing their current pipeline infrastructure for hydrogen transport. Yet, a critical aspect requiring extensive research is the expansion planning of these networks to accommodate increased capacity in the future. This study investigates the utilization of existing natural gas pipeline infrastructure for hydrogen transportation as a cost-saving measure. It explores two expansion strategies, namely pipeline looping and compression, for repurposing a segment of a 342 km x 36inch existing pipeline, from the Escravos – Lagos gas pipeline system (ELPS) in Nigeria, for hydrogen transport. Employing the Promax® process simulator tool, the study assesses compliance with the API RP 14E and ASME B31.12 standards for hydrogen and hydrogen-methane blends. Both expansion strategies demonstrate acceptable velocity and pressure drop characteristics for hydrogen blends of up to 40%. Additionally, the increase in hydrogen content leads to heightened compression power requirements until approximately 80% hydrogen in the blends for compression, and a corresponding extension in looping length until around 80% hydrogen in the blend for looping. Moreover, the compression option proves to be more economically viable for all investigated proportions of hydrogen blends for the PS1-PS5 segment of the Escravos – Lagos gas pipeline case study. The percentage price differentials between the two expansion strategies reach as high as 495% for a 20% hydrogen proportion in the blend. This study offers valuable insights into the technical and economic implications of repurposing existing natural gas infrastructure for hydrogen transportation.

Preprint REVIEW | doi:10.20944/preprints202403.0780.v1

Hydrocarbons Are the Backbone of Sustainable Civilization

Zaid Binhazzaa

Subject: Engineering, Chemical Engineering Keywords: Sustainability; Material solutions; Hydrocarbons; Material Science; Sustainable Materials

Online: 13 March 2024 (15:11:44 CET)

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Preprint REVIEW | doi:10.20944/preprints202403.0737.v1

Ammonia Can be Currently Considered as one of the Best Green Energy Ally

Rubén González, Xiomar Gómez

Subject: Engineering, Chemical Engineering Keywords: economy decarbonization; alternative fuels; CO2 emission reduction; engines

Online: 13 March 2024 (12:00:21 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0751.v1

Effective Removal of Microplastics Particles from Wastewater using Bio-Substrates

Laura Beatriz Romero-Zeron, Kalyani Prasad Bhagwat, Denis Rodrigue

Subject: Engineering, Chemical Engineering Keywords: microplastic particles; bio-adsorbents; natural fibers; bio-substrates; wastewater; plastic pollution; marine pollution; removal; wastewater treatment plants

Online: 13 March 2024 (10:09:00 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0658.v1

Effect of Microscopic Properties for Industrial Cohesive Powder

Maheandar Manokaran, Martin Morgeneyer, Dominik Weiss

Subject: Engineering, Chemical Engineering Keywords: Shear testing; Cohesive powders; Bulk solids

Online: 12 March 2024 (09:11:46 CET)

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Preprint REVIEW | doi:10.20944/preprints202403.0630.v1

Progress and Evaluation of Compressed Carbon Dioxide Energy Storage Systems: A Review

Hailing Ma, Yao Tong, Xiao Wang, Hongxu Wang

Subject: Engineering, Chemical Engineering Keywords: Carbon dioxide energy storage; Thermodynamic analysis; Exergy analysis; Energy storage; System model

Online: 12 March 2024 (04:23:19 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0574.v1

Life Cycle Assessment of Wheat Straw Pyrolysis With Volatiles Fraction Chemical Looping Combustion

Teresa Mendiara, Alberto Navajas, Alberto Abad, Tobias Pröll, Mikel Munárriz, Luis M. Gandía, Francisco García-Labiano, Luis Francisco De Diego Poza

Subject: Engineering, Chemical Engineering Keywords: Biomass pyrolysis; Chemical Looping Combustion; Life Cycle Assessment; Environmental Impacts; Carbon Footprint

Online: 11 March 2024 (05:41:05 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0454.v1

Application of Calcium Carbonate in the Pharmaceutical Removal Process

Izabela Zielińska, Daniel Polak, Aleksandra Jurkiewicz, Julia Osełkowska, Aleksandra Lorek, Michał Stor, Andrzej Krasiński, Paweł Gierycz, Maciej Szwast

Subject: Engineering, Chemical Engineering Keywords: membrane; adsorption; integrated process

Online: 7 March 2024 (13:42:38 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0368.v1

Simultaneous Synthesis of Single and Multiple Contaminants Water Networks Using LINGO and Excel Software

Abeer M. Shoaib, Amr A. Atawia, Mohamed H. Hassanean, Abdelrahman G. Gadallah, Ahmed A. Bhran

Subject: Engineering, Chemical Engineering Keywords: Wastewater networks; Multiple contaminants; Mathematical model; Optimization

Online: 7 March 2024 (08:17:53 CET)

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Preprint REVIEW | doi:10.20944/preprints202402.1742.v1

Foam Control Mechanisms in Anaerobic Digestion Systems

Abidemi Olawunmi Adisa, Andy Durrant

Subject: Engineering, Chemical Engineering Keywords: Foaming, foam control,; organic waste, anaerobic digestion

Online: 29 February 2024 (13:45:25 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.1677.v1

Global Genetic Algorithm for Automating and Optimizing Petroleum Well Deployment in Complex Reservoirs

Sonny Irawan, Dennis Delali Kwesi Wayo, Alfrendo Satyanaga, Jong Kim

Subject: Engineering, Chemical Engineering Keywords: Well deployment; Genetic Algorithms; CMG; Global Optimization; Reservoir

Online: 29 February 2024 (11:41:15 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.1640.v1

Fermentative utilization of glycerol by E. coli and its implications in biodiesel industry

Ociel Cofre Carvajal, Jose Manuel Gomez Montes de Oca, Domingo Cantero Moreno

Subject: Engineering, Chemical Engineering Keywords: Glycerol; Pilot scale; olive pomace oil; Fed-batch culture; Escherichia coli MG1655; Ethanol

Online: 28 February 2024 (17:02:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.1626.v1

Production Capacity Prediction and Optimization in the Glycerin Purification Process: A Simulation-Assisted Few-Shot Learning Approach

Tawesin Jitchaiyapoom, Chanin Panjapornpon, Santi Bardeeniz, Mohd Azlan Hussain

Subject: Engineering, Chemical Engineering Keywords: glycerin purification; few-shot learning; production optimization; simulation-assisted.

Online: 28 February 2024 (10:52:24 CET)

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Preprint REVIEW | doi:10.20944/preprints202402.1358.v2

Anaerobic Digestion’s Process Stability Parameters for Maximizing Methane Yield

Abidemi Olawunmi Adisa, Andy Durrant

Subject: Engineering, Chemical Engineering Keywords: Mechanical pre-treatment; methane yield; Biomass; Anaerobic digestion technology

Online: 28 February 2024 (03:11:22 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.0933.v2

Optimizing Methane Yield through Anaerobic Digestion Using Hollander Beater as Mechanical Pre-Treatment Method

Abidemi Olawunmi Adisa, Andy Durrant

Subject: Engineering, Chemical Engineering Keywords: Renewable energy; Methane; Biomass; Wastepaper; Mechanical pre-treatment; Anaerobic digestion

Online: 27 February 2024 (12:00:04 CET)

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The UN Sustainable Development Goal 7 Report 2022 is about ensuring access to clean and affordable energy, which is key to the development of agriculture, business, communications, education, healthcare, and transportation. The lack of access to energy hinders economic and human development. Nevertheless, the current pace of progress is insufficient to achieve Goal 7 by 2030. Huge disparities in access to modern sustainable energy persist. Rising commodity, energy and shipping prices have increased the cost of producing and transporting solar photovoltaics modules, wind turbines and biofuels worldwide, adding uncertainty to a development trajectory that is already far below Goal 7 ambitions. Achieving energy and climate goals will require continued policy support and a massive mobilization of public and private capital for clean and renewable energy such as methane from biomass. An important factor in improving methane yield from biomass waste is pre-treatment of the biomass prior to anaerobic digestion. Size reduction of lignocellulose biomass is important for changing and increasing digestibility thus increasing methane yield. A Hollander beater was used as the mechanical pre-treatment machine throughout this study. Results indicate that methane yield is directly proportional to feedstock/Inoculum (F/I) ratio as higher F/I ratio led to higher methane yield. It was observed at an F/I ratio of 0.5 that 5 minutes pre-treatment time produced highest methane yield, while the lowest methane yield was observed at an F/I ratio of 0.2 with 1 minute of pre-treatment time. Methane yield decreased by 30% from 140 mL gTS-1 at F/I ratio 0.5 with 5 minutes pre-treatment time to 98 mL gTS-1 at F/I 0.2 with 5 minutes pre-treatment time. The optimum methane yield was attained at high F/I ratio allowing sufficient nutrient essential for complete degradation of biomass. Overall, this research shows the Hollander beater is not efficient in optimizing methane yield for cardboard.

Preprint REVIEW | doi:10.20944/preprints202402.1358.v1

Anaerobic Digestion’s Process Stability Parameters for Maximizing Methane Yield

Abidemi Olawunmi Adisa, Andy Durrant

Subject: Engineering, Chemical Engineering Keywords: Mechanical pre-treatment; methane yield; Biomass; Anaerobic digestion technology

Online: 23 February 2024 (09:32:11 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.0933.v1

Optimizing Methane Yield through Anaerobic Digestion Using Hollander Beater as Mechanical Pre-treatment Method

Abidemi Adisa, Andy Durrant

Subject: Engineering, Chemical Engineering Keywords: renewable energy; methane; biomass; wastepaper; mechanical pre-treatment; anaerobic digestion

Online: 19 February 2024 (10:18:55 CET)

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The UN Sustainable Development Goal 7 Report 2022 is about ensuring access to clean and affordable energy, which is key to the development of agriculture, business, communications, education, healthcare, and transportation. The lack of access to energy hinders economic and human development. Nevertheless, the current pace of progress is insufficient to achieve Goal 7 by 2030. Huge disparities in access to modern sustainable energy persist. Rising commodity, energy and shipping prices have increased the cost of producing and transporting solar photovoltaics modules, wind turbines and biofuels worldwide, adding uncertainty to a development trajectory that is already far below Goal 7 ambitions. Achieving energy and climate goals will require continued policy support and a massive mobilization of public and private capital for clean and renewable energy such as methane from biomass. An important factor in improving methane yield from biomass waste is pre-treatment of the biomass prior to anaerobic digestion. Size reduction of lignocellulose biomass is important for changing and increasing digestibility thus increasing methane yield. A Hollander beater was used as the mechanical pre-treatment machine throughout this study. Results indicate that methane yield is directly proportional to feedstock/Inoculum (F/I) ratio as higher F/I ratio led to higher methane yield. It was observed at an F/I ratio of 0.5 that 5 minutes pre-treatment time produced highest methane yield, while the lowest methane yield was observed at an F/I ratio of 0.2 with 1 minute of pre-treatment time. Methane yield decreased by 30% from 140 mL gTS-1 at F/I ratio 0.5 with 5 minutes pre-treatment time to 98 mL gTS-1 at F/I 0.2 with 5 minutes pre-treatment time. The optimum methane yield was attained at high F/I ratio allowing sufficient nutrient essential for complete degradation of biomass. Overall, this research shows the Hollander beater is not efficient in optimizing methane yield for cardboard.

Preprint ARTICLE | doi:10.20944/preprints202402.0732.v1

Exploring the Influence of Morphology on Bipolaron-Polaron Ratios and Conductivity in Polypyrrole in the Presence of Surfactants

Thaneeya Samwang, Nozomi Morishita Watanabe, Yukihiro Okamoto, Hiroshi Umakoshi

Subject: Engineering, Chemical Engineering Keywords: polypyrrole; surfactant; sodium dodecyl sulfate; bipolaron and polaron ratio; C-H deformation; Raman spectra

Online: 13 February 2024 (12:45:33 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.0217.v1

Improving Economic Efficiency of Heat Pump Integration Into Distillation Columns of Process Plants Applying Different Pressures of Evaporators and Condensers

Stanislav Boldyryev, Mariia Ilchenko, Goran Krajačić

Subject: Engineering, Chemical Engineering Keywords: process integration; heat pump; heat exchangers; industry electrification; energy saving; emission reduction; economic assessment.

Online: 5 February 2024 (05:34:22 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.0089.v1

Amphiphilic Graft Copolymers as Templates for the Generation of Binary Metal Oxide Mesoporous Interfacial Layers for Solid State Photovoltaic Cells

Seung Man Lim, Hayeon Jeong, Juyoung Moon, Jung Tae Park

Subject: Engineering, Chemical Engineering Keywords: Graft copolymer; Mesoporous; Metal oxide; Interfacial layer; Solid state electrolyte; Photovoltaic cells; Dye-sensitized solar cells (DSSCs)

Online: 2 February 2024 (04:47:08 CET)

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Preprint COMMUNICATION | doi:10.20944/preprints202401.2203.v1

The Separation of Lithium Ion and Imidazolium Cation by Electrical Driven Membrane Technology

XUE Jingyi, MENG Xiang, WANG Runci, Zhongwei Yuan, Weifang Zheng

Subject: Engineering, Chemical Engineering Keywords: lithium ions; imidazolium cations; electrical driven membrane technology

Online: 31 January 2024 (13:04:01 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.2184.v1

Just-in-Time Fluid Flow Simulation on Mobile Devices Using OpenVisFlow and OpenLB

Dennis Teutscher, Adrian Kummerländer, Fedor Bukreev, Marcio Dorn, Mathias J. Krause

Subject: Engineering, Chemical Engineering Keywords: CFD; LBM; mobile device; just-in-time; digital twin

Online: 31 January 2024 (08:07:12 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1954.v1

Hydrodesulfurization of Thiophene in N-heptane Stream Using CoMo/SBA-15 and CoMo/AlSBA-15 Mesoporous Catalysts

Ana Carla S.L.S. Coutinho, Joana M.F. Barros, Marcio D.S. Araujo, Jilliano B. Silva, Marcelo J. B. Souza, Regina C.O.B. Delgado, Valter J. Fernandes Jr., Antonio S. Araujo

Subject: Engineering, Chemical Engineering Keywords: SBA-15; nanostructured materials; Cobalt; Molybdenum; hydrodesulfurization; environmental catalysis; petroleum refining

Online: 29 January 2024 (04:12:40 CET)

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The removal of sulfur from fossil fuels is one of the most important processes in modern refineries. It is accomplished via hydrodesulfurization (HDS) of the sulfur organic compounds in presence of heterogeneous catalysts. In the current work, heterogeneous catalysts containing cobalt and mo-lybdenum supported on mesoporous materials type SBA-15 and AlSBA-15 were synthesized for application in the HDS reactions of thiophene in n-heptane stream. The mesoporous materials were synthesized by hydrothermal method starting from TEOS, pseudobohemite, hydrochloric ac-id and water. Pluronic P123 was used as template. The best calcination conditions for removal of the organic template were optimized by thermogravimetry analysis (TG/DTG). The calcined SBA-15 and AlSBA-15 supports were submitted to co-impregnation with solutions of cobalt nitrate and ammonium heptamolybdate, aiming the production of 15% in mass of metal loading with atomic ratio of [Co/(Co+Mo)]=0.45. The obtained materials were dried and calcined for obtaining the mesoporous catalysts in the form of CoMo/SBA-15 and CoMo/AlSBA-15. The catalysts were char-acterized by XRD, TG/DTG, SEM and nitrogen adsorption. From XRD analysis, it was verified that after decomposition of the cobalt and molybdenun salts, were formed MoO3, Co3O4 and Co-MoO4 oxides on the supports, being attributed to these chemical species the activity for the HDS reactions. The activity of the obtained catalysts was evaluated in a continuously flowing tubular fixed-bed microreactor coupled on-line to a gas chromatograph, using n-heptane stream contain-ing 12070 ppm of thiophene (ca. 5100 ppm of sulfur) as a model compound. From the catalytic tests it was verified that the synthesized catalysts presented good activity for the reaction, and the main obtained products were cis- and trans-2-butene, 1-butene, n-butane and low amounts of iso-butane. The presence of 1,3-butadiene and tetrahydrothiophene (THT) were not detected. A mechanism of the primary and secondary reactions and subsequent formation of the olefins and paraffins, in the CoMo/SBA-15 and CoMo/AlSBA-15 mesoporous catalysts were proposed, con-sidering steps of desulfurization, hydrogenation, dehydrogenation, THT decyclization and isomerization.

Preprint ARTICLE | doi:10.20944/preprints202401.1757.v1

Filter Cake Neural-Objective Data Modelling and Image Optimization

Dennis Delali Kwesi Wayo, Sonny Irawan, Alfrendo Satyanaga, Jong Kim, Mohd Zulkifli Bin Mohamad Noor, Vamegh Rasouli

Subject: Engineering, Chemical Engineering Keywords: Mud Rheology; Filter Cakes; Neural Network; Image; Objective Optimization

Online: 24 January 2024 (10:25:03 CET)

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Neural-objective and image optimization approaches for drilling fluid rheology automation are crucial for drilling engineering optimization. A myriad of intelligent computational models are employed to predict and monitor the parameters of mud rheology and filter cake permeability posture using an artificial neural network feedforward (ANN-FF) function, a non-ANN-FF function, an image processing tool, and a model optimization tool. 498 datasets of synthetic-based mud (SBM) flat rheology from a drilling mud laboratory at Nazarbayev University were imported into a user-friendly MATLAB application using image processing and nftool. Apart from the Google TensorFlow Sequential API DNN architecture used, a Levenberg-Marquardt training algorithm with input sigmoid hidden neurons 10, 12, and 18 coupled with a linear output layer was also used to predict the SBM flow index. OBM and SBM filter cakes were processed for void spaces; however, a model study was extrapolated to maximize filtration volume Vf. The study’s findings show that the ANN-FF model employed for rheological property monitoring and prediction had higher steady and exponential levels of accuracy and a correlation coefficient of 0.96-0.99. More so, SBM and OBM image processing presented an area of void spaces of 1790M2 and 1739M2, respectively. The porosity and permeability postures of both SBM and OBM resulted in a significant void space capable of maximizing the flow index. In addition, the single-objective modelling based on a genetic algorithm did validate the experimental rheological data for flow index or filtration volume Vf optimization; the study resulted in the finding that the constrained physics-informed objective function hindered maximizing oil recovery and instead predicted possible formation damage. It is empirical to note that automating flow predictions with neural, objective, and image functions has presented an alternative novel method for non-programmers using MATLAB and Google Colabs that is capable of enhancing mud rheological parameters, drilling efficiency, and hydrocarbon recovery.

Preprint ARTICLE | doi:10.20944/preprints202312.1298.v2

Unveiling the Transformative Potential of Semi-lean Flows on Gas Purification Units and Unlocking Energy Utilization: A Comprehensive Analysis of Mdea-Base

NNADIKWE JOHNSON, Onyewudiala Julius Ibeawuchi,

Subject: Engineering, Chemical Engineering Keywords: energy; MDEA; base; HYSYS; amine; software; analysis

Online: 24 January 2024 (07:27:19 CET)

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The primary objective of this research was to assess the energy consumption of the gas treatment units at Bonny NLNG Refinery, the first Gas Refinery in Rivers State, Nigeria, while utilizing semi-lean amine. To achieve this goal, a simulation of the units was conducted using the advanced software package Aspen Hysys (V.8.3). The simulation was designed to accurately represent the dynamic behavior of the refinery's gas treatment units, allowing for a comprehensive analysis of their energy usage. The research aimed to quantify the energy consumption of the gas treatment units and identify opportunities for energy optimization. By utilizing semi-lean amine, which is known to improve energy efficiency, the study sought to evaluate the potential energy savings that could be achieved in the refinery's operations. The simulation model incorporated the specific design and operational parameters of the gas treatment units at Bonny NLNG Refinery, including the gas flow rate, lean amine concentration, absorber pressure, stripping temperature, amine circulation rate, and acid gas removal efficiency. By considering these parameters, the simulation accurately represented the dynamic behavior of the gas treatment units, enabling a detailed analysis of their energy consumption. Through the simulation, various scenarios and operational conditions were evaluated to determine the optimal set of parameters that minimized energy consumption. The research also examined the trade-offs between energy consumption, acid gas removal efficiency, and other performance indicators, such as amine circulation rate and regeneration efficiency. The findings of this research have significant implications for the energy efficiency and sustainability of gas treatment operations at Bonny NLNG Refinery. By identifying opportunities for energy optimization and providing recommendations for the utilization of semi-lean amine, the study contributes to the development of more efficient and environmentally friendly gas treatment processes. Overall, this research combines advanced simulation techniques with a comprehensive analysis of energy consumption to provide valuable insights into the energy efficiency of gas treatment units at Bonny NLNG Refinery, enabling informed decision-making and potential improvements in energy utilization. By utilizing the percentage-based unit simulation approach, a detailed examination of the energy consumption patterns was obtained. This analysis provides valuable insights into the operational efficiency and determination of potential energy-saving opportunities within the gas treatment units. This study specifically focuses on the integration of an absorption column split stream (stream flow) and a flash unit as a potential means to reduce the energy consumption of gas treatment devices. The integration of these units aims to optimize the overall energy efficiency of the gas treatment process by recovering and utilizing waste heat and reducing energy losses. The absorption column split stream allows for the diversion of a portion of the gas stream to a flash unit before entering the absorber. The flash unit operates at a lower pressure, which facilitates the release of entrained hydrocarbons and reduces the overall energy requirements for gas treatment. By separating and recovering the hydrocarbons in the flash unit, energy losses associated with their absorption and subsequent regeneration are minimized. Through the simulation, the study analyzes the energy consumption patterns of the gas treatment units with and without the integration of the absorption column split stream and flash unit. Comparative assessments are conducted to evaluate the energy savings and overall operational efficiency achieved through this integration. The findings of this research will provide valuable insights into the potential energy-saving opportunities offered by the integration of the absorption column split stream and flash unit in gas treatment devices. It will help refine the design and operation of gas treatment units, enabling more energy-efficient processes in the gas refining industry. By optimizing energy consumption in gas treatment units, the study contributes to the industry's goals of reducing greenhouse gas emissions and improving sustainability. The integration of the absorption column split stream and flash unit offers a promising approach to enhance energy efficiency, reduce operational costs, and minimize environmental impact. Overall, this research underscores the importance of exploring innovative solutions, such as the integration of different process units, to achieve energy savings in gas treatment operations. Through a comprehensive analysis of energy consumption patterns, this study aims to provide practical recommendations for optimizing energy efficiency in gas treatment units, fostering a more sustainable and efficient gas refining industry.The research specifically explores the impact of integrating the absorption column split stream and flash unit when dealing with sour gas streams containing carbon dioxide concentrations of less than mole ℅, while utilizing MDEA fluid as the solvent. Through comprehensive analysis and simulation using advanced software tools, the study demonstrates that by incorporating the absorption column split stream and flash unit, a significant reduction in device energy consumption of up to 10% can be achieved. The integration of the absorption column split stream and flash unit offers promising opportunities to enhance the energy efficiency of gas treatment devices. By diverting a portion of the gas stream to the flash unit, the separation of hydrocarbons and the subsequent release of entrained hydrocarbons at lower pressure significantly reduce the overall energy requirements for gas treatment. The comprehensive analysis and simulation conducted in the research provide concrete evidence of the energy-saving potential of this integration. By quantifying the energy consumption patterns and comparing scenarios with and without integration, the study establishes the effectiveness of the approach and its impact on operational efficiency. The findings of the research highlight the importance of considering the specific gas composition and utilizing appropriate solvents, such as MDEA, for optimizing energy efficiency. The integration of the absorption column split stream and flash unit not only reduces energy consumption but also offers the potential for cost savings and environmental benefits. Overall, the research demonstrates that by incorporating the absorption column split stream

Preprint ARTICLE | doi:10.20944/preprints202401.1737.v1

Galvanic Corrosion of E690 Offshore Platform Steel in a Simulated Marine Thermocline

Jiezhen Hu, Guodong Lin, Peichang Deng, Ziyun Li, Yuwan Tian

Subject: Engineering, Chemical Engineering Keywords: Galvanic corrosion; Simulated marine thermocline; E690; Dissolved oxygen; Exploitation of ocean resource

Online: 24 January 2024 (07:25:47 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1674.v1

Functionalization of Ordered Mesoporous Silica (MCM-48) with Task Specific Ionic Liquid for Enhanced Carbon Capture

Firuz Philip, Amr Henni

Subject: Engineering, Chemical Engineering Keywords: CO₂ capture; mesoporous silica; MCM-48; Amino Acid Ionic Liquid (AAILs); Task-Specific Ionic Liquid (TSIL); functionalization

Online: 24 January 2024 (02:53:32 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1459.v1

Chemical Instability Induced Wettability Patterns on Superhydrophobic Surfaces

Tianchen Chen, Faze Chen

Subject: Engineering, Chemical Engineering Keywords: Superhydrophobic surface; chemical instability; wettability pattern; droplet manipulation

Online: 19 January 2024 (06:28:59 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1394.v1

Effect of Cross Nano Wall Surface on the Onset Time of Explosive Boiling: A Molecular Dynamic Study

Rasoul Fallahzadeh, Fabio Bozzoli, Luca Cattani, Muhammad Waheed Azam

Subject: Engineering, Chemical Engineering Keywords: Explosive boiling; Molecular dynamics simulations; Liquid nanofilm; Nanostructurned surface; Onset time

Online: 18 January 2024 (11:02:42 CET)

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