Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Surface-Coated PVDF@TAPEG Selective Ultrafiltration Membranes: An Investigation on Membranes’ Hydrophilicity and Antifouling Characteristics for Effective Humic Acid Removal from Wastewater

Version 1 : Received: 6 April 2024 / Approved: 8 April 2024 / Online: 8 April 2024 (16:04:58 CEST)

How to cite: Emadinezhad, L.; Ayati, B. Surface-Coated PVDF@TAPEG Selective Ultrafiltration Membranes: An Investigation on Membranes’ Hydrophilicity and Antifouling Characteristics for Effective Humic Acid Removal from Wastewater. Preprints 2024, 2024040553. https://doi.org/10.20944/preprints202404.0553.v1 Emadinezhad, L.; Ayati, B. Surface-Coated PVDF@TAPEG Selective Ultrafiltration Membranes: An Investigation on Membranes’ Hydrophilicity and Antifouling Characteristics for Effective Humic Acid Removal from Wastewater. Preprints 2024, 2024040553. https://doi.org/10.20944/preprints202404.0553.v1

Abstract

This research aimed to synthesize Polyvinyl fluoride (PVDF) membranes and coat them with Tannic acid (TA) nanoparticles and Polyethylene glycol (PEG) additives so that the membrane's removal efficacy for humic acid (HA) pollutant from agricultural wastewater was investigated. Thus, six membranes with PEG:TA ratios of 0:0, 1:0, 0:1, 1:1, 4:1 and 1:4 were synthesized. Then the membranes' characteristics were identified by FT-IR ATR, FESEM, and AFM analysis, and HA's particle size and zeta potential were also investigated. Based on optimizing effective parameters, the operating pressure of 1.5 bar and HA concentration of 80 ppm were selected as optimal values. The membrane with PEG:TA=4:1, as the optimally modified membrane, had a pure water flux of 446.03 L/m2.h, effluent flux of 72.43 L/m2.h and pollutant removal rate of 86.62% at pH=7 After 60 min had passed. These values for the pristine membrane (PEG:TA=0:0) were 265.64 L/m2.h, 89.39 L/m2.h, and 75.59%, respectively. The results showed that although the effluent flux was lower in the optimized modified membrane than in the pristine membrane, HA removal percentage was increased.

Keywords

wastewater treatment; tannic acid coating; polyvinylidene fluoride membrane; hydrophilicity; Humic acid separation.

Subject

Environmental and Earth Sciences, Water Science and Technology

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.