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Preprint ARTICLE | doi:10.20944/preprints202306.0393.v1

Study of MBBR-MBR Performance by the Addition of Commercial and 3D-Printed Biocarriers

Dimitra C. Banti, Petros Samaras, Eleni Kostopoulou, Vassiliki Tsioni, Themistoklis Sfetsas

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: MBBR-MBR; biofilm; 3D-printed biocarriers; Kaldnes K1 biocarriers; 13X-halloysite biocarriers; membrane fouling; SMP; EPS; colloidal particles; wastewater treatment

Online: 6 June 2023 (07:14:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0284.v1

Automatic River Planform Recognition Tested on Chilean Rivers

Andrea Gianni Cristoforo Nardini, Francisca Salas, Zoila Carrasco, Noelia Valenzuela, Renzo Rojas, José Vargas-Baecheler, Santiago Paul Yepez

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: River Planform; River Reaches; Automatic Identification; Geomorphics Elements and Units; Biobío Basin

Online: 5 June 2023 (09:02:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0207.v1

Improvement of MBBR Performance by the Addition of 3D-Printed Biocarriers Fabricated with 13X and Bentonite

Dimitra C. Banti, Petros Samaras, Afroditi G. Chioti, Anastasios Mitsopoulos, Michail Tsangas, Antonis Zorpas, Themistoklis Sfetsas

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: moving bed biofilm reactor; K1 biocarriers; 3D-printed biocarriers; biofilm; SMP; EPS; activated sludge; wastewater treatment

Online: 2 June 2023 (13:44:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0133.v1

Ocean Rise Effects on Shallow Groundwater in Coastal Areas: A Case Study in Juelsminde, Denmark

Ronja Forchhammer Mathiasen, Emilie Padkær Haugan, Theis Raaschou Andersen, Henriette Højmark Hansen, Anna Bondo Medhus, Søren Erbs Poulsen

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Global sea level rise; Groundwater fluctuations; Machine learning model; Predictability; Loggers

Online: 2 June 2023 (05:44:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0007.v1

Spatial-Temporal Influence of Sand Dams on Chemical and Microbial Properties of Water From Scooping Holes in Degraded Semi-Arid Regions

Harrison Churu, Solomon Kamau, Wilson Ngetich, Keziah Magiroi, Bonface Alkamoi, Syphyline Kebeney, Fred Wamalwa, James Mumo

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Faecal coliforms; Scooping holes, Water quality

Online: 1 June 2023 (03:05:38 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.2203.v1

Disinfection of Digestate Effluents Using Photocatalytic Nano-Filtration

Afroditi G. Chioti, Georgia Sarikaki, Vasiliki Tsioni, Eleni Kostopoulou, George Em. Romanos, Polycarpos Falaras, Themistoklis Sfetsas

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: disinfection; indicator pathogens; TiO2 photocatalysis; photocatalytic nanofiltration reactor; membrane filtration; anaerobic digestion; liquid digestate

Online: 31 May 2023 (08:36:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.2190.v1

Advanced Electrochemical Degradation of Organic Pollutants From Water Using Sb-Doped SnO2/Ti Anode and Assisted by Granular Activated Carbon

Anamaria Baciu, Corina Orha, Radu Nicolae, Mircea Nicolaescu, Sorina Ilies, Florica Manea

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: advanced water treatment; electrochemical filtering; doxorubicin; mesoporous Sb-doped SnO2 electrode; activated carbon; particulate electrode

Online: 31 May 2023 (07:52:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1945.v1

Groundwater Level Trend Analysis and Prediction in the Upper Crocodile (West) Basin, South Africa

Tsholofelo Mmankwane Tladi, Julius Musyoka Ndambuki, Thomas Otieno Olwal, Sophia Sudi Rwanga

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Rainfall; Groundwater; Mann-Kendall; Upper Crocodile; Characterisation; Cross-correlation; Autocorrelation; lag time; Gradient Boosting; Machine Learning

Online: 29 May 2023 (02:19:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1502.v1

Hydrothermally Synthesized ZnMgAl-Layered Double Hydroxide and Rice Husk Biochar Composites for Cu(II) and Pb(II) Ions Removal From Synthetic Wastewater

Muhammad Shafiq, Abdulrahman Ali Alazba, Muhammad Tahir Amin

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Batch adsorption; Langmuir isotherm; LDH/RHB; pseudo second-order

Online: 22 May 2023 (10:35:44 CEST)

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The efficiency of a new composite material of the layered double hydroxide (LDH) of ZnMgAl and rice husk biochar (RHB) for the removal of Cu(II) and Pb(II) ions from synthetic wastewater was investigated in this study. The images of scanning electron microscope showed extremely fine crystalline LDH particles decorated on the rough surface of the RHB while the succesful formation of the composite adsorbent (LDH/RHB) was confirmed by the corresponding energy dispersive X-ray and the Fourier-transform infrared spectroscopy. An equilibrium contact time of 30 and 15 min for Cu2+ and Pb2+, respectively, was proposed for the optimum performance of the batch adsorption process. The dose of the LDH/RHB adsorbent was optimized at 0.4 g yielding maximum adsorption capacities of 117 and 124 mg g-1 for Cu2+ and Pb2+, respectively, with corresponding maximum removal efficiencies of nearly 94% and 99%. The initial meta concentrations was optimized at 50 or 60 mg L-1 corresponding to maximum removal efficiencies or adsorption capacities. For the changing initial metal’s concentration, the removal efficiencies remained unchanged for up to 50 mg L-1 and decreased by about 50% by increasing the initial concentrations from 50 to 100 mg L-1. The adsorption capacities observed a linear increasing trend by increasing the initial concentrations from 5 to 60 mg L-1 and remained unchanged afterward up to 100 mg L-1. A solution pH of 6.0 yielded optimum results with an increasing trend in adsorption capacities and percentage removal by changing the solution pH from 2.0 to 7.0. Based on the best-fit of the pseudo second-order kinetic model to the experimental data, the chemisorption was suggested to be the controlling mechanism of adsorption. The fitting of the Langmuir model suggested a monolayer sorption of Cu2+ and Pb2+ in addition to a heterogeneous adsorption as supported by the fitting of the Temkin isotherm. The application of the Dubinin–Radushkevich isotherm proposed a physical adsorption (mean free energy of adsorption less than 8 kJ mol−1) of both heavy metal ions on the surface of the LDH/RHB adsorbent.

Preprint ARTICLE | doi:10.20944/preprints202305.1370.v1

Using an Open-Source Tool to Develop a Three-Dimensional Hydrogeologic Framework of the Kobo Valley, Ethiopia

Sisay S. Mekonen, Scott E. Boyce, Abdella K. Mohammed, Markus Disse

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: East Africa; Rift Valley; hydrogeologic framework; GemPy; groundwater management

Online: 19 May 2023 (04:01:04 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1158.v1

Optimal Pressure Sensor Deployment for Leak Identification in Water Distribution Networks

Guang Yang, Hai Wang

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: leak identification; pressure sensor deployment; water distribution networks

Online: 16 May 2023 (10:53:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1051.v1

Phytoremediation Capacity of Water Hyacinth (Eichhornia crassipes) as Nature-based Solution for Contaminants and Physicochemical Characterization of Lake Water

Esayas Elias Churko, Munyaradzi Chitakira, Luxon Nhamo

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Heavy metals; water quality; remediation; water security; ecosystem services; spatio-temporal variation; nature-based solution

Online: 15 May 2023 (14:14:33 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0198.v4

Elementary Steps in Steady State Kinetic Model Approximation for the Homo-Heterogeneous Photocatalysis of Carbamazepine

Giora Rytwo, Yuval Shahar

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: carbamazepine; advanced oxidation process; pseudo-order; rate law; half life time; elementary steps; steady-state approximation

Online: 15 May 2023 (03:36:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0915.v1

Summary Study on Temperature Calculation Method of Water Accumulation in Permafrost Regions

Xiaoying Hu, Erxing Peng, Yu Sheng, Ji Chen, Xiangbin Zhao, Qifan Yang

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: water accumulation in permafrost; thermal surface boundary; water temperature; heat exchange

Online: 12 May 2023 (09:43:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0811.v1

Evaluation of Rainfall Products in Semi-arid Areas: Application to the Southeast of the Republic of Djibouti and a Focus on the Ambouli Catchment

Golab Moussa Omar, Jean-Emmanuel PATUREL, Christian Salles, Gil Mahé, Mohamed Jalludin, Frederic Satgé, Mohamed Ismail Nour

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Djibouti; rainfall; precipitation datasets; categorical metrics,; quantitative metrics; reliability; rain gauges

Online: 11 May 2023 (07:18:45 CEST)

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The Republic of Djibouti is a small country in the Horn of Africa and, as in most developing countries, rain gauges are sparse and data are scarce. This study aims to report on the reliability of gridded precipitation datasets (P datasets) across the Republic of Djibouti through direct comparisons with rain gauge measurements from the annual to the daily time scales. Our specific objective is to be able to use such products in the context of hydrological modeling at a daily time step. Given the scarcity of available data in the Republic of Djibouti, our study was carried out on two time windows (1980-1990 and 2008-2013) and two gauge networks with different spatial resolutions: the southeast of the Republic of Djibouti (5000 km2) and the Ambouli catchment (794 km2), which drains the city of Djibouti. The reliability of these products is analyzed with quantitative metrics and categorical metrics, exclusively at a daily time step for the latter. The performance of the P datasets degrades from the annual time scale to the daily time scale. Even though the same products exhibit the best performance at the various time scales, the performance of most of the products differs from one spatial scale to another. Our results demonstrate the importance of the temporal and spatial windows, as the same products can perform differently according to the scale. For all the spatiotemporal scales, the most reliable product is MSWEP v.2.2. This P dataset is derived from a combination of satellite products (multiple sensors such as infrared and passive microwave), reanalysis products, and rain gauge observations. A strong discrepancy between rain gauge observations and P datasets is revealed according to the categorical metric at a daily time step. The analysis of rainfall events triggering runoff, using a 10 mm rainfall threshold showed that the most efficient products were unable to accurately detect such events at a daily time step, with a significant underestimation of rainfall events higher than 10 mm. None of these products, even the most reliable, can be used for a calibration/validation of a hydrological model at a daily time step.

Preprint ARTICLE | doi:10.20944/preprints202305.0802.v1

Turbulence Kinetic Energy and High-order Moments of Veloc-ity Fluctuations of Flows in the Presence of Submerged Vegetation in Pools

Mohammad Reza Tabesh, Parsa Parvizi, Hossein Afzalimehr, Jueyi Sui

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Vegetation canopy; Pool; Reynolds shear stresses; Skewness coeficients.; Turbulent kinetic energy

Online: 11 May 2023 (05:36:01 CEST)

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In the presence of aquatic plants in streams, a variety of flow structures have been reported. Re-sults of earlier investigations indicated that the hydrodynamic features of flows in rivers, and streams are influenced by a wide range of submerged and non-submerged vegetation. In the pre-sent study, eight experiment runs were conducted in two artificial pools built in a laboratory flume to assess the flow structures across vegetation cover. The slopes for entrance and exit sec-tions of these two pools are of 5 and 10 degrees, respectively. A patch of artificial grass covered the entire pool area over the gravel bed. The effect of stream flow velocity was investigated by considering two aspect ratios of 2 and 2.7. Also, distributions of flow velocity, Reynolds normal and shear stresses, turbulence intensities, turbulent kinetic energy (TKE), and higher-order mo-ments of velocity fluctuations have been investigated. By means of quadrant analysis, it is found that the skewness coefficients of velocity profiles are significant parameters to evaluate. Based on skewness values for the bursting processes, along the pool entrance section with a smaller slope, the contribution of sweep motion occurs in a more restricted zone above the canopy, and this im-plies that the ejection motion occurs in a pool entrance section with a higher slope. Immediately above the vegetation canopy, the dominant process is the sweep motion of bursting events. Whereas, at the upstream boundary of the vegetation patch, an outward motion with slightly pos-itive value occurs; and around the downstream boundary of the vegetation patch, the isotropic turbulence appears at the boundary of the vegetation and gravel bed. Over the vegetation canopy in the pool, less mixing eddies result in lower Reynolds shear stress values, and thus the turbulent flow becomes weak with lower turbulent kinetic energy (TKE). Because of the shallow flow in an artificial channel with an aspect ratio less than five and the availability of vertical non-zero ve-locity components, secondary currents become stronger in the channel. Consequently, there is a divergence from a linear dispersion of Reynolds shear stress.

Preprint ARTICLE | doi:10.20944/preprints202305.0762.v1

Scale Dependence of Errors in Snow Water Equivalent Simulations using ERA5 Reanalysis over Alpine Basins

Susen Shrestha, Mattia Zaramella, Mattia Callegari, Felix Greifeneder, Marco Borga

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: TOPMELT; ERA5; SWE; Drizzle; Bias Adjustment

Online: 10 May 2023 (14:31:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0534.v1

Driving Factors of the Hydrological Response of a Tropical Watershed: the Ankavia River Basin in Madagascar

Zonirina Ramahaimandimby, Alain Randriamaherisoa, Marnik Vanclooster, Charles L. Bielders

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Madagascar; Ankavia catchment; hydrological signatures; catchment descriptors; driving factors

Online: 8 May 2023 (11:55:37 CEST)

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Understanding the hydrological behavior of watersheds and their driving factors is crucial for sustainable water resources management. However, at large scales, this task remains challenging due to the spatial heterogeneity in landscapes, topography, land use, geology, and soil properties. In this context, the aim of this study was to identify the key factors that influence the hydrological system of four watersheds: Ankavia (WS1: 55% forest cover), Ankaviabe (WS2: 77% forest cover), Sahafihitry (WS3: 41% forest cover), and Antsahovy (WS4: 48% forest cover), over a 10-month study period. These catchments are located within the SAVA region of northeastern Madagascar and have a humid-tropical climate. We investigated the relationship between selected catchment descriptors (CD) and hydrological signatures (HS) by using a Pearson coefficient-based correlation matrix. More specifically, CD extracted from topography/morphology (T), land use (LU), soil (S), and geological characteristics (G) were correlated with HS, including base flow index (BFI), runoff coefficient (rc), peak flow (Qp), runoff event time scales (ts), high flows (Q5), low flows (Q95), and mean discharge (q_mean). The analysis revealed that land use, soil properties, and geology seem to be the best predictors for BFI and Q95, while soil properties mainly govern rc, Qp, Q5, ts, and q_mean. These findings provide valuable insights into the key drivers of hydrologic behavior that can inform water resource management strategies. In particular, WS2 has better flood buffering capacity but suffers from lower base flows in the dry season potentially due to higher evapotranspiration. Conversely, WS3 and WS4 (and to a lesser extent WS1) have lower flood buffering capacity, but these watersheds experience less pronounced low flows in the dry season due to higher base flow index resulting from lower evapotranspiration. The results emphasize the importance of sustainable land use practices and conservation efforts, which are essential for the sustainable development of the region. By incorporating these practices into water management strategies, we can help ensure a more stable and reliable water supply for communities and ecosystems within the region.

Preprint ARTICLE | doi:10.20944/preprints202305.0490.v1

Ant Colony Based Artificial Neural Network to Predict Spatial and Temporal Variation in Multiple Groundwater Quality Parameters

Bhavya Ravinder, Lakshmanan Elango

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Artificial neural network; Ant colony optimization; Groundwater quality; Prediction

Online: 8 May 2023 (09:18:47 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0166.v1

Estimation of Changes in Nutrient Release Rate From Sediments After Tsunami by Incubation Experiment

Mitsuru Hayashi, Tetsunori Inoue, Soichi Hirokawa

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: nutrient release rate; marine sediment; redeposition; incubation experiment; Osaka Bay; Nankai Trough earthquake; primary production

Online: 4 May 2023 (03:02:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0148.v1

Understanding Saltwater Origins and Mechanisms in the Coastal Aquifers of Da Nang Area (Central Vietnam)

Thao Bach Nguyen, Nhan Duc Dang, Bang Duc Dao

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: saltwater intrusion; groundwater modeling; sustainable groundwater development; Coastal aquifers; Surface water interaction; Water resource management

Online: 3 May 2023 (12:39:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.1170.v1

Isotherm and Kinetic Study of Metal Ions sorption on Mustard Waste Biomass Functionalized With Polymeric Thyocarbamate

Dumitru Bulgariu, Lăcrămioara (Negrilă) Nemeş, Laura Bulgariu, Iftikhar Ahmad

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: sorption; metal ions; mustard waste biomass; functionalization; polymeric thiocarbamate

Online: 28 April 2023 (11:03:39 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.1152.v1

Assessment of Spatiotemporal Groundwater Recharge Distri-bution Using SWAT-MODFLOW Model and Transient Water Fluctuation Method

Hiyaw Hatiya Ware, Tarekegn Dejen Mengistu, Bisrat Ayalew Yifru, Sun Woo Chang, Il-Moon Chung

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: SWAT-MODFLOW; groundwater recharge; PEST; Water table fluctuation

Online: 28 April 2023 (08:53:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.1039.v1

Circular Economy Model Through Phosphorus Recovery to Obtain Struvite from Sewage Sludge

Javier Cañas, Silvia Álvarez-Torrellas, Blanca Hermana, Juan García

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Circular economy; phosphorus; struvite; valorization; wet oxidation.

Online: 27 April 2023 (04:40:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.1038.v1

Regional Differences and Convergence of Urban Water Use Efficiency in the Yangtze River Economic Belt

Yunbo Xiang, Wen Shao, Zhijun Dai, Yaxin Zhang, Shufang Ding

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: water use efficiency; regional differences; convergence; urban agglomerations; Yangtze River Economic Belt

Online: 27 April 2023 (04:38:59 CEST)

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This study used a two-stage network data envelopment analysis model to measure the water use efficiency of 108 cities in the Yangtze River Economic Belt in the initial water use and wastewater treatment phases from 2009 to 2019. We used the Dagum Gini coefficient to decompose the urban water use efficiency of six major urban clusters in the Yangtze River Economic Belt. We also used σ convergence and β convergence types to test the convergence characteristics of urban water use efficiency of six major urban clusters in the Yangtze River Economic Belt. This study found that the overall low level of water use efficiency in cities in the Yangtze River Economic Zone mainly stems from the low level of water use efficiency in the wastewater treatment stage. The 108 cities in the Yangtze River Economic Zone are divided into four types based on the average values of water use efficiency in the initial use and wastewater treatment phases; the highest number of cities are in the double-low category, with low average values of water use efficiency in the initial use and wastewater treatment phases. During the study period, spatial differences in urban water use efficiency in the Yangtze River Economic Zone narrowed, with the differences stemming mainly from hyperdensity, followed by intra- and inter-regional differences. Meanwhile, there is convergence in urban water use efficiency in the Yangtze River Economic Belt; significant β convergence in the urban agglomerations of the Yangtze River Delta, Jianghuai, middle reaches of the Yangtze River, Chengdu–Chongqing, and Central Yunnan; and insignificant β convergence in the Central Qian urban agglomeration. After considering control factors, such as industrial structure, financial development level, environmental regulation, economic development level, and science and education development level, the water use efficiency of the six major urban clusters in the Yangtze River Economic Belt converges faster, but the influence of these control factors on the water use efficiency of each urban cluster is heterogeneous. Research results have reference value for the development of improvement strategies on differentiated urban water use efficiency in the Yangtze River Economic Belt.

Preprint ARTICLE | doi:10.20944/preprints202304.0983.v1

Hydrological Modeling in the Upper Lancang-Mekong River Basin Using Global and Regional Gridded Meteorological Reanalyses

Shixiao Zhang, Yang Lang, Furong Yang, Xinran Qiao, Xiuni Li, Yuefei Gu, Qi Yi, Lifeng Luo, Qingyun Duan

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: CMADS; CFSR; meteorological variables; hydrological simulations; SWAT+; upper Lancang-Mekong River Basin

Online: 26 April 2023 (11:29:40 CEST)

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Preprint REVIEW | doi:10.20944/preprints202304.0964.v1

Review of Slow Sand Filtration for Raw Water Treatment with Potential Application in Less-Developed Countries

Kaldibek Abdiyev, Seitkhan Azat, Erzhan Kuldeyev, Sana Kabdrakhmanova, Ronny Berndtsson, Bostandyk Khalkhabai, Ainur Kabdrakhmanova, Shynggyskhan Sultakhan

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: slow sand filtration; developing countries: microbes; parasites; turbidity; safe drinking water; water treatment

Online: 26 April 2023 (07:25:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0307.v1

The Dual Effects of Environmental Regulation on Water Resources Utilization Performance

Ruiqi Jin, Hailiang Ma

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: environmental regulation; water resource utilization performance; dual effects; two-step system GMM

Online: 13 April 2023 (07:49:02 CEST)

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Environmental regulation has dual effects on water resource utilization performance through various channels such as the "three red lines" and the "Porter hypothesis". Based on the detailed analysis of the impact path of environmental regulation on water resource utilization performance, the two-step system GMM method was adopted to test the dual effects of environmental regulation on water resource utilization performance by using panel data of 30 provinces and cities from 2004 to 2020. The results show that: (1) Environmental regulation has a significant direct impact on water resource utilization performance, and is currently in the stage of positive relationship of an inverted u-shaped relationship. (2) Environmental regulation has a significant indirect impact on water resource utilization Environmental regulation has dual effects on water resource utilization performance through various channels such as the "three-red lines" and the "Porter hypothesis". In accordance with a detailed examination of the influence path of environmental regulation on the performance of water resource utilization, the double effects of environmental regulation on water resource utilization performance were examined using panel statistics from 30 provinces and cities from 2004 to 2020 using the two-step system GMM approach. The results demonstrate that: (1) Environmental regulation has a direct effect on water resource utilization performance which is currently in the stage of the positive relationship of an inverted u-shaped relationship. (2) The influence of environmental regulation on water resource utilization performance through government intervention and industrial structure adjustment is indirect, among which government intervention can significantly improve water resource utilization performance, while the growth of the tertiary industry as a percentage can lower water resource utilization performance. (3) Both direct and indirect impacts indicate that enhancing the efficiency of the use of water resources is sustainable, and the water resource utilization performance of the preceding period had a major positive impact over the present phase. Therefore, the paper sets out a few policy suggestions, such as choosing reasonable environmental regulation tools, actively guiding the market-oriented reform with constraints, and upgrading the industrial structure in a green way.

Preprint ARTICLE | doi:10.20944/preprints202304.0198.v3

Elementary Steps in Steady State Kinetic Model Approximation for the Homo-Heterogeneous Photocatalysis of Carbamazepine

Yuval Shahar, Giora Rytwo

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: carbamazepine; advanced oxidation process; pseudo-order; rate law; half life time; elementary steps; steady-state approximation

Online: 13 April 2023 (03:08:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0198.v2

Elementary Steps in Steady State Kinetic Model Approximation for the Homo-Heterogeneous Photocatalysis of Carbamazepine

Yuval Shahar, Giora Rytwo

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: carbamazepine; advanced oxidation process; pseudo-order; rate law; half life time; elementary steps; steady-state approximation

Online: 12 April 2023 (02:33:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0198.v1

Elementary Steps in Steady State Kinetic Model Approximation for the Homo-Heterogeneous Photocatalysis of Carbamazepine

Yuval Shahar, Giora Rytwo

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: carbamazepine; advanced oxidation process; pseudo-order; rate law; half life time; elementary steps; steady-state approximation

Online: 11 April 2023 (05:17:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0112.v1

Flood Mapping and Scour Potential Prediction Using Hydraulic Model Based on Advanced ASV-Measured Extreme Flood Events Triggered by Snowmelt

Vida Atashi, Yeo Howe Lim

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: HEC-RAS model; Red River; LiDAR data; Flood mapping; Manning’s n-coefficient; Contraction Scour Depth

Online: 7 April 2023 (04:54:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202303.0519.v1

Spatial-Temporal Distribution Characteristics and Interrelationship of Sulfur and Iron Compounds in Sediments: A Model Study in the Closed-Section of Mikawa Bay, Japan

Mitsuyasu Waku, Ryota Sone, Tetsunori Inoue, Toshiro Ishida, Teruaki Suzuki

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: dissolved sulfide; iron; hypoxia; buffering capacity; environmental restoration; coastal waters; Mikawa Bay; dead zone

Online: 30 March 2023 (02:58:33 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202303.0495.v1

Evaluation of Various Generalized Pareto Probability Distributions for Flood Frequency Analysis

Cristian Gabriel Anghel, Cornel Ilinca

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: floods; frequency analysis; extreme value statistics; Pareto; Wakeby; estimation parameters; approximate form; method of ordinary moments; method of linear moments

Online: 29 March 2023 (02:29:25 CEST)

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Preprint BRIEF REPORT | doi:10.20944/preprints202303.0427.v1

Characterization and Assessment of Water Quality using Statistical Analysis for Tiruchirappalli City, Tamil Nadu, India

Swagata Chakraborty, J. Fowmitha Banu, K. Sridhar, P. Vignesh, P. Kalaipriya, M. Govindaraju

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Correlation study; Regression analysis; Physicochemical parameters; quality of water; Electrical conductivity

Online: 24 March 2023 (07:50:50 CET)

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Preprint ARTICLE | doi:10.20944/preprints202303.0405.v1

Rainwater and Wastewater Management: A Case Study of Dakar’s Built-up area, Senegal

Abdoulaye FATY, Cheikh DIOP, Waly FAYE

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Management; rainwater; wastewater; rainfall; urban areas; Dakar

Online: 23 March 2023 (02:08:41 CET)

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Preprint ARTICLE | doi:10.20944/preprints202303.0369.v1

Bacterial Contamination Levels and Brand Perception of Sachet Water: A Case Study in Nigerian Urban Neighborhoods

I. T. Tenebe, E. O. Babatunde, C. C. Eddy-Ugorji, N. B. Ogarekpe, C. V. Ekeanyanwu, O. S. Oladele, O. B. Ezendu

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Sachet water; water quality; bacteriological quality; public health; drinking water

Online: 21 March 2023 (06:14:26 CET)

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Preprint REVIEW | doi:10.20944/preprints202301.0070.v1

Circulatory Pathways in the Water and Wastewater sector in the Latin-American Region (LAR)

Paula C. Soto-Rios, Nidhi Nagabhatla, Brenda Acevedo-Juárez

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Circular Economy; Water; Wastewater; Resource Use; Latin America

Online: 4 January 2023 (06:39:53 CET)

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Preprint REVIEW | doi:10.20944/preprints202212.0043.v1

Heavy Metals Removals from Wastewater and Reuse of the Metal Loaded Adsorbents in Various Applications: A Review

Bienvenu Gael Fouda Mbanga, Tarisa Velempini, Kriveshini Pillay, Zikhona Ngeva-Tywabi

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: adsorption; GBV; heavy metals; secondary pollution; spent adsorbent reuse

Online: 2 December 2022 (08:43:18 CET)

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Preprint REVIEW | doi:10.20944/preprints202209.0214.v1

Worldwide Surveillance Actions and Initiatives of Drinking Water Quality: A Scoping Review

Rayssa Horacio Lopes, Cícera Renata Diniz Vieira Silva, Ísis de Siqueira Silva, Pétala Tuani Cândido de Oliveira Salvador, Léo Heller, Severina Alice da Costa Uchôa

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Drinking water; potable water; public health surveillance; quality control; government.

Online: 15 September 2022 (02:17:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202208.0318.v1

Monitoring Quality and Pollution Assessment of Groundwater for Drinking Purposes to Assure Sustainability

Saad Alramthi, Gamila Ali, Ahmed Shaban, Tarek Abdou, Atiah Elthagafi, Saad Eldosari, Bao-Ku Zhu, Hosam Safaa

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Drinking water management; drinking water criteria; groundwater; reverse osmosis; sustainable development; water aesthetics

Online: 17 August 2022 (10:08:44 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202207.0076.v1

Water Consumption Habits of a North-Western Turkish Community: A Cross-Sectional Study

Ünal Ayranci, Merve sezer Yildiz, Ahmet Demirci

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: water consumption; drinking water; consumer preference; water usage purposes

Online: 5 July 2022 (13:45:20 CEST)

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Preprint REVIEW | doi:10.20944/preprints202202.0336.v1

Review of Effects of Dam Construction on the Ecosystems of River Estuary and Nearby Marine Areas

Xuan Zhang, Changling Fang, Yuan Wang, Xiaoyi Lou, Ying Su, Dongmei Huang

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Dam; River estuary; Ecosystem; Effect

Online: 25 February 2022 (13:16:40 CET)

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Preprint ARTICLE | doi:10.20944/preprints202110.0381.v1

Impacts of Human Interventions on Water Quality of Upper Ganga River Near Haridwar, Uttarakhand: A GIS-Based Analysis

Pradip Kumar Maurya, Sk Ajim Ali, Ateeque Ahmad Ahmad, Krishna Kumar Maurya

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Physico-chemical parameters; water quality index; land use land cover; GIS integration; special correlation

Online: 26 October 2021 (12:24:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202108.0217.v1

Legionella spp. Colonization in Water Systems of Hotels Linked with Travel-Associated Legionnaires’ Disease

Antonios Papadakis, Maria Keramarou, Dimosthenis Chochlakis, Vassilios Sandalakis, Varvara Mouchtouri, Anna Psaroulaki

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Legionella; water systems; risk; water safety plan; hotel

Online: 10 August 2021 (09:11:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202106.0378.v1

Effect of COVID-19 Lockdown on Metal Concentration in the Water Column of Asia’s Largest Coastal Lagoon

Syed Hilal Farooq, Amrit Kumar Mishra, Sandip Kumar Muhakud, Prasannajit Acharya, Pradipta Ranjan Muduli, Debadutta Swain

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Trace metals; COVID-19; Lagoon ecosystem; Anthropogenic pollution; Water quality; India

Online: 14 June 2021 (15:56:06 CEST)

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A complete halt on all anthropogenic activities and human movement due to COVID-19 lockdown has provided a great opportunity to assess the impact of human activities on coastal marine ecosystems. The current study assessed the concentration of the metals in water samples of the largest brackish water lagoon of Asia; the Chilika lagoon in the state of Odisha, India between pre-COVID-19 and post-COVID-19 lockdown scenarios. Monthly water samples (n=30 stations) from 0.3 m depth were collected from three sectors of the lagoon seasonally; pre-monsoon, monsoon, and post-monsoon. In addition to various physical parameters [pH, salinity, alkalinity, (DO) dissolved oxygen, (TDS) total dissolved solids, and (EC) electrical conductivity] the collected water samples were analysed for 18 trace metals (Al, As, Ba, Be, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, Sr, Th, Tl, U, V). Most of the physical parameters showed a significant variation between pre-and post-COVID-19 scenarios, except for pH and DO. The concentration of five metals (Be, Cd, Co, Ni, and Pb) remained below detection limits in all water samples. The impact of COVID-19 lockdown on the concentration of the metal in the water samples was noticed along with the three sectors of the lagoon. However, eight metals (Al, As, Cr, Fe, Mn, Th, U, and V) were significantly different between the COVID-19 scenarios and the remaining five metals were not statistically significant. The mean concentration of Al, As, Fe, Th, and V were higher in the pre-COVID-19 scenarios, whereas only Cr and Mn were higher in the post-COVID-19 scenarios. The mean concentration of U was similar among both COVID-19 scenarios, even though there were seasonal and sectoral differences. The seasonal influence of riverine influx was more evident on metal concentration during the monsoon season, whereas the difference between sectors was more prominent during the post-monsoon season. An increased number of correlations between physical parameters and metal concentration were observed in the post-monsoon season and post-COVID-19 scenario. This study provides evidence that the imposition of COVID-19 lockdown reduced metal influx in the water column and improved the water quality of the Chilika lagoon. Our results can be used as baseline for metal concentration in surface waters of the lagoon.

Preprint REVIEW | doi:10.20944/preprints202106.0320.v1

Inherent Bias of SARS-CoV-2 RNA Quantification for Wastewater Surveillance Due to Variable RT-qPCR Assay Parameters

Aaron Bivins, Devrim Kaya, Kyle Bibby, Stuart Simpson, Stephen Bustin, Orin Shanks, Warish Ahmed

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: RT-qPCR; assay validity; standard curve; quality assurance; quality control; wastewater surveillance

Online: 11 June 2021 (14:10:51 CEST)

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Working Paper COMMUNICATION

Sars-Cov-2 Wastewater Surveillance for Public Health Action: Connecting Perspectives From Wastewater Researchers and Public Health Officials During a Global Pandemic

Jill McClary-Gutierrez, Mia Mattioli, Perrine Marcenac, Andrea Silverman, Alexandria Boehm, Kyle Bibby, Michael Balliet, Francis de los Reyes III, Daniel Gerrity, John Griffith, Patricia Holden, Dimitrios Katehis, Greg Kester, Nathan LaCross, Erin Lipp, Jonathan Meiman, Rachel Noble, Dominique Brossard, Sandra McLellan

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: SARS-CoV-2; wastewater surveillance

Online: 7 June 2021 (13:01:18 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202105.0381.v1

Building-Level Wastewater Monitoring for COVID-19 Using Tampon Swabs and RT-LAMP for Rapid SARS-Cov-2 RNA Detection

Aaron Bivins, Megan Lott, Marlee Shaffer, Zhenyu Wu, Devin North, Erin Lipp, Kyle Bibby

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: SARS-CoV-2; wastewater monitoring; environmental surveillance; RT-LAMP; building-level; near-source; passive sampling

Online: 17 May 2021 (10:07:04 CEST)

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Working Paper ARTICLE

Public attitudes towards Digital Water Meters for households

Steven Hendrik Koop, Sharon Helena Clevers, Elisabeth Johanna Blokker, Stijn Brouwer

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Water Conservation; Customer Segmentation; Pro-Environmental Behaviour; Smart Water Meters; Water-use Feedback

Online: 7 May 2021 (09:41:56 CEST)

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Working Paper ARTICLE

Resistance to Change and Perceived Risk as Determinants of Water-Saving Intention

Francisco J. Sarabia-Sánchez, Isabel P. Riquelme, Juan Manuel Bruno

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: water saving; resistance to change; perceived risk; intentions; Sustainable Development Goal 12

Online: 19 April 2021 (14:25:22 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints202104.0167.v1

Sars-Cov-2 Wastewater Surveillance for Public Health Action: Connecting Perspectives From Wastewater Researchers and Public Health Officials During a Global Pandemic

Jill McClary-Gutierrez, Mia Mattioli, Perrine Marcenac, Andrea Silverman, Alexandria Boehm, Kyle Bibby, Michael Balliet, Francis de los Reyes III, Daniel Gerrity, John Griffith, Patricia Holden, Dimitrios Katehis, Greg Kester, Nathan LaCross, Erin Lipp, Jonathan Meiman, Rachel Noble, Dominique Brossard, Sandra McLellan

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: SARS-CoV-2; wastewater surveillance

Online: 6 April 2021 (10:15:25 CEST)

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Wastewater surveillance for SARS-CoV-2 has garnered extensive public attention during the COVID-19 pandemic as a proposed complement to existing disease surveillance systems. Over the past year, environmental microbiology and engineering researchers have advanced methods for detection and quantification of SARS-CoV-2 viral RNA in untreated sewage and demonstrated that the trends in wastewater are correlated with trends in cases reported days to weeks later depending on the location. At the start of the pandemic, the virus was also detected in wastewater in locations prior to known cases. Despite the promise of wastewater surveillance, for these measurements to translate into useful public health tools, it is necessary to bridge the barriers between researchers and the public health responders who will ultimately use the data. Here we describe the key uses, barriers, and applicability of SARS-CoV-2 wastewater surveillance for supporting public health decisions and actions. This perspective was formed from a multidisciplinary group of environmental microbiology, engineering, wastewater, and public health experts, as well as from opinions shared during three focus group discussions with officials from ten state and local public health agencies. The key barriers to use of wastewater surveillance data identified were: (1) As a new data source, most public health agencies are not yet comfortable interpreting wastewater data; (2) Public health agencies want to see SARS-CoV-2 wastewater data in their own communities to gain confidence in its utility; (3) New institutional knowledge and increased capacity is likely needed to sustain wastewater surveillance systems; and (4) The ethics of wastewater surveillance data collection, sharing, and use are not yet established. Overall, while wastewater surveillance to assess community infections is not a new idea, by addressing these barriers, the COVID-19 pandemic may be the initiating event that turns this emerging public health tool into a sustainable nationwide surveillance system.

Preprint ARTICLE | doi:10.20944/preprints202101.0557.v1

Stakeholder Networking Analysis on Umbulan Water Supply Project: An Exploratory Study Combined With Meta-Analysis Identification Design

Dimas Trisliatanto, Mohammad Adib, Rustinsyah Rustinsyah, Dewi Kurniasih, Suparto Wijoyo, Moses Glorino Rumambo Pandin

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Stakeholder; Networking; Stakeholder Networking; Umbulan Water Supply Project

Online: 27 January 2021 (12:28:53 CET)

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Preprint ARTICLE | doi:10.20944/preprints202012.0163.v1

Assessment of Streamflow Simulation for a Tropical Forested Catchment using Dynamic TOPMODEL – Dynamic fluxEs and ConnectIvity for Predictions of HydRology (DECIPHeR) Framework and Generalized Likelihood Uncertainty Estimation (GLUE)

Fadhliani Umar, Zed Diyana, Badronnisa Yusuf, Siti Nurhidayu

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: streamflow; dynamic TOPMODEL; DECIPHeR; GLUE analysis

Online: 7 December 2020 (14:36:02 CET)

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Preprint REVIEW | doi:10.20944/preprints202011.0743.v1

Implications of Inadequate Water and Sanitation Infrastructure for Community Spread of COVID-19 in Remote Alaskan Communities

Laura Eichelberger, Subhabrata Dev, Tricia Howe, David Barnes, Eric Bortz, Brandon Briggs, Patricia Cochran, Aaron Dotson, Devin Drown, Micah Hahn, Kaitlin Mattos, Srijan Aggarwal

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: COVID-19; Alaska Native; water security; sanitation

Online: 30 November 2020 (16:36:11 CET)

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Preprint ARTICLE | doi:10.20944/preprints202008.0721.v2

Is Rainwater Harvesting Sufficient to Satisfy The Emergency Water Demand for The Prevention of COVID-19? The Case of Dilla town, Southern, Ethiopia

Girum Gebremeskel Kanno, Zemachu Ashuro Lagiso, Zeleke Girma Abate, Abereham Shiferaw Areba, Renay Van Wyk, Mekonnen Birhanie Aregu

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: COVID-19; Dilla; Emergency water demand; Ethiopia; Rain Water Harvesting

Online: 12 October 2020 (10:15:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202010.0187.v1

The Impact of Water Loss by Evaporation and Calcite Precipitation on the Sodium Adsorption Ratio (SAR) and an Alternative Method of Estimating the SAR of Irrigation Drainage Water

Qiyu Zhou, William Bleam, Douglas Soldat

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: sodium adsorption ratio; SAR; CROSS, electrical conductivity; specific conductivity; salinity; irrigation; groundwater; water quality

Online: 9 October 2020 (08:45:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202008.0721.v1

Is Rainwater Harvesting Sufficient to Satisfy The Emergency Water Demand for The Prevention of COVID-19? The Case of Dilla town, Southern, Ethiopia

Girum Gebremeskel Kanno, Zemachu Ashuro Lagiso, Zeleke Girma Abate, Abereham Shiferaw Areba, Renay Van Wyk, Mekonnen Birhanie Aregu

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: COVID-19; Dilla; Emergency water demand; Ethiopia; Rain Water Harvesting

Online: 31 August 2020 (10:29:20 CEST)

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Preprint CASE REPORT | doi:10.20944/preprints202008.0049.v1

Drinking Water and Diarrheal Characteristic Cases in Darbendikhan City

Sabah Shareef Mohammed, Yadgar Hussien Hama-karim, Mohammed Ibrahim Mohialdeen Gubari

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: diarrhoeal cases; drinking water; water sources; water pollution; Darbandikhan Lake

Online: 2 August 2020 (17:41:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0695.v1

Performance Study of Integrated Solar-Water Supply System for Isolated Agricultural Areas in Thailand: Two Case-Study Villages of The Royal Initiative Project

Thanongsak Imjai, Kamon Thinsurat, Pakorn Ditthakit, Warit Wipulanusat, Monthian Setkit, Reyes Garcia

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: water resource management; solar-water; solar-water supply system; SWSS; decision support; solar pumping; climate change; royal initiative project

Online: 29 July 2020 (11:40:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202003.0147.v1

Optimal Water Allocation in Golden Triangle Energy Region-A case study of Ningxia District.

Yiqing Zhang, Xiaoyan Liu

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Golden Triangle Energy Region; water resources; optical allocation

Online: 9 March 2020 (02:34:59 CET)

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Preprint ARTICLE | doi:10.3390/sci2010005

XRF Quick-Scan Mapping for Heavy Metal Pollutants in SuDS: A Methodological Approach

Guri Venvik, Floris Boogaard

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: portable X-ray fluorescence spectrometer (XRF); heavy metals; lead (Pb); zinc (Zn); copper (Cu); topsoil; sustainable urban drainage systems; SuDS; LID; BMPs; WSUD; GI; SCMs

Online: 30 January 2020 (00:00:00 CET)

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Working Paper ARTICLE

ARIMA-M: A New Model for Daily Water Consumption Prediction, Based on the Autoregressive Integrated Moving Average Model and the Markov Chain Error Correction

Hongyan Du, Zhihua Zhao, Huifeng Xue

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: water resource management; water consumption prediction; Markov chain; autoregressive moving average model; error correction

Online: 10 January 2020 (07:09:20 CET)

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Preprint ARTICLE | doi:10.20944/preprints201911.0058.v1

Towards a Set of Guidelines for the Development of Robust Water-sharing Systems

Michael Young

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: water rights; robustness; water governance; water scarcity; water allocation; water accounting; water trading; water sharing

Online: 6 November 2019 (10:43:15 CET)

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Preprint ARTICLE | doi:10.20944/preprints201910.0096.v1

Test of a Modified Rainfall-runoff Model in Large-scale River Basins

Spyros Giakoumakis, Dimitris Tigkas

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Rainfall-runoff model; large-scale river basins; calibration; validation

Online: 9 October 2019 (10:16:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201909.0256.v1

Using Double-Bounded Dichotomous-Choice to Estimate Households’ Willingness to Pay for Improved Water Quality in Bac Ninh Province of Vietnam

Nguyen Van Song , Vu Ngoc Huyen, Le Thi Phuong Dung

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: double-bounded dichotomous-choice; willingness to pay; water quality improvement; handicraft households

Online: 22 September 2019 (16:06:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201904.0047.v1

Willingness to Pay for Improved Water Quality and Influencing factors: An Insight from Chia Lagoon, Malawi

Rodgers Makwinja, Ishmael Kosamu, Chikumbusko Kaonga

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Chia lagoon, Water resources, willingness to pay (WTP), Malawi

Online: 4 April 2019 (11:30:21 CEST)

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Preprint REVIEW | doi:10.3390/sci1010015.v1

Endocrine Disrupting Compounds Removal Methods from Wastewater in the United Kingdom: A Review

China K. Gadupudi, Louis Rice, Libin Xiao, Komali Kantamaneni

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: wastewater treatment; temperatures; systematic review; biofilms; endocrine disrupting compounds

Online: 21 March 2019 (00:00:00 CET)

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Working Paper ARTICLE

Design and Fabrication of Strong Parts from Biodegradable Polymer with a Desktop 3D Printer

Vladimir Kuznetsov, Azamat Tavitov, Oleg Urzhumtcev, Mikhail Mikhailin, Alexey Solonin

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Design for additive manufacturing; desktop 3D printing; fused filament fabrication; polylactic acid; mechanical strength

Online: 20 March 2019 (14:52:37 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0426.v1

Augmented Popperian Experiments: A Framework for Sustainability Knowledge Development across Contexts

Fred Phillips, Hsing-Er Lin, Trudi Schifter, Nicholas Folse

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: sustainability; governance; piecemeal engineering; collaboration; Karl Popper

Online: 19 November 2018 (07:05:11 CET)

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Preprint ARTICLE | doi:10.20944/preprints201810.0643.v1

Assimilation of Synthetic SWOT River Depths in a Regional Hydrometeorological Model

Vincent Häfliger, Eric Martin, Aaron Boone, Sophie Ricci, Sylvain Biancamaria

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: overland flow, satellite altimetry, hydrological modelling, data assimilation

Online: 27 October 2018 (21:08:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201803.0086.v1

IWRM as a System Approach to Water Security: Evidence from the Awash River Basin of Ethiopia

Reta Hailu, Degefa Tolossa, Getnet Alemu

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Integrated Water Resources Management (IWRM); system thinking; water security; Awash basin; Ethiopia

Online: 12 March 2018 (07:18:33 CET)

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Preprint ARTICLE | doi:10.20944/preprints201801.0126.v1

Surveillance of Groundwater Quality Using Geographical Information System in Kannur District, India

Thangavelu Arumugam, Praveen Krishna, Sapna K

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: GIS, Groundwater, Physico- chemical parameters, Statistics

Online: 15 January 2018 (16:48:32 CET)

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Preprint ARTICLE | doi:10.20944/preprints201711.0109.v1

Hexachlorocyclohexanes, Cyclodiene, Methoxychlor and Heptachlor in Sediment of the Alvarado Lagoon System in Veracruz, Mexico

María del Refugio Castañeda-Chávez, Fabiola Lango-Reynoso, Gabycarmen Navarrete-Rodríguez

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: bioavailability; toxicity; public health; pesticides; aquatic ecosystems

Online: 16 November 2017 (10:59:25 CET)

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Preprint ARTICLE | doi:10.20944/preprints201706.0045.v1

Paradox of Limited Water Resources in Iran and Goals of Self-Sufficiency in Agricultural Sector

Hamed Rafiee, Fereshteh Balovi

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Virtual water; Agriculture; Staples; Water resources per capita

Online: 8 June 2017 (18:06:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201608.0006.v1

Hydrochemical Characteristics and Water Quality Assessment of Surface Water at Xiahe County in Tibetan Plateau Pastoral of China

Qian Zhang, Shengli Wang, Muhammad Yousaf, Zhongren Nan, Shuixian Wang, Jianmin Ma, Depeng Wang, Fei Zang

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: surface water; Tibetan Plateau pastoral area; Xiahe County; hydrochemical characteristics; fuzzy comprehensive method; water quality

Online: 2 August 2016 (04:20:00 CEST)

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Environmental and Earth Sciences