Low electric field assisted surface conductive membrane in AnMBR: Strengthening effect and fouling behavior

Wang, L; Wu, Y; Fu, Y; Deng, L; Wang, Y; Ren, Y; Zhang, H

Low electric field assisted surface conductive membrane in AnMBR: Strengthening effect and fouling behavior

Wang, L Wu, Y Fu, Y Deng, L Wang, Y Ren, Y Zhang, H

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Chemical Engineering Journal, 2022, 431, pp. 1-15
Issue Date:: 2022-03-01

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Field	Value	Language
dc.contributor.author	Wang, L
dc.contributor.author	Wu, Y
dc.contributor.author	Fu, Y
dc.contributor.author	Deng, L
dc.contributor.author	Wang, Y
dc.contributor.author	Ren, Y
dc.contributor.author	Zhang, H
dc.date.accessioned	2023-07-02T23:35:59Z
dc.date.available	2023-07-02T23:35:59Z
dc.date.issued	2022-03-01
dc.identifier.citation	Chemical Engineering Journal, 2022, 431, pp. 1-15
dc.identifier.issn	1385-8947
dc.identifier.uri	http://hdl.handle.net/10453/171111
dc.description.abstract	This study investigated the possibility of using a novel type of surface conductive hollow fiber membrane during the Anaerobic membrane bioreactor process (AnMBR). In particular, the membrane fouling control mechanisms of Surface electric field AnMBR (S-AnEMBR) were evaluated through comparing with the operation of Conventional AnMBR (AnMBR) and Electric field AnMBR (AnEMBR). Results showed that S-AnEMBR had longer running time, stronger anti-fouling capability, and more stable Total organic carbon (TOC) removal efficiency. And S-AnEMBR could extend the running time of the rapid fouling phase (Stage 2). Electrochemical analysis and microbial community analysis showed that enhanced electron transfer in S-AnEMBR accelerated the decomposition of organic matter and further improved acidification efficiency from 83.75% to 234.78%, indicating the methane concentration ranged between 24.56 mmol/L and 36.99 mmol/L. Cake layer compression was reduced because significant changes were observed in increased particle size and more negative Zeta potential. In addition, basophilic methanogens (48%) were enriched at cathode, which improved electrochemical activity of carbon electrode biocathode and promoted anaerobic digestion. Therefore, it was found that S-AnEMBR was more conducive to controlling the properties and structure of the gel layer, and further achieving the resistance towards protein and polysaccharide adhesion in membrane. This work demonstrated that the surface conductive hollow fiber membrane possessed good anti-fouling ability in AnMBR, and provided an alternative membrane material for AnMBR application.
dc.language	en
dc.publisher	Elsevier
dc.relation.ispartof	Chemical Engineering Journal
dc.relation.isbasedon	10.1016/j.cej.2021.133185
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0904 Chemical Engineering, 0905 Civil Engineering, 0907 Environmental Engineering
dc.subject.classification	Chemical Engineering
dc.title	Low electric field assisted surface conductive membrane in AnMBR: Strengthening effect and fouling behavior
dc.type	Journal Article
utslib.citation.volume	431
utslib.for	0904 Chemical Engineering
utslib.for	0905 Civil Engineering
utslib.for	0907 Environmental Engineering
utslib.copyright.status	closed_access	*
pubs.consider-herdc	true
dc.date.updated	2023-07-02T23:32:32Z
pubs.publication-status	Published
pubs.volume	431

Abstract:

This study investigated the possibility of using a novel type of surface conductive hollow fiber membrane during the Anaerobic membrane bioreactor process (AnMBR). In particular, the membrane fouling control mechanisms of Surface electric field AnMBR (S-AnEMBR) were evaluated through comparing with the operation of Conventional AnMBR (AnMBR) and Electric field AnMBR (AnEMBR). Results showed that S-AnEMBR had longer running time, stronger anti-fouling capability, and more stable Total organic carbon (TOC) removal efficiency. And S-AnEMBR could extend the running time of the rapid fouling phase (Stage 2). Electrochemical analysis and microbial community analysis showed that enhanced electron transfer in S-AnEMBR accelerated the decomposition of organic matter and further improved acidification efficiency from 83.75% to 234.78%, indicating the methane concentration ranged between 24.56 mmol/L and 36.99 mmol/L. Cake layer compression was reduced because significant changes were observed in increased particle size and more negative Zeta potential. In addition, basophilic methanogens (48%) were enriched at cathode, which improved electrochemical activity of carbon electrode biocathode and promoted anaerobic digestion. Therefore, it was found that S-AnEMBR was more conducive to controlling the properties and structure of the gel layer, and further achieving the resistance towards protein and polysaccharide adhesion in membrane. This work demonstrated that the surface conductive hollow fiber membrane possessed good anti-fouling ability in AnMBR, and provided an alternative membrane material for AnMBR application.

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http://hdl.handle.net/10453/171111