Excellent Biofouling Alleviation of Thermoexfoliated Vermiculite Blended Poly(ether sulfone) Ultrafiltration Membrane.

Orooji, Y; Liang, F; Razmjou, A; Li, S; Mofid, MR; Liu, Q; Guan, K; Liu, Z; Jin, W

Excellent Biofouling Alleviation of Thermoexfoliated Vermiculite Blended Poly(ether sulfone) Ultrafiltration Membrane.

Orooji, Y Liang, F Razmjou, A Li, S Mofid, MR Liu, Q Guan, K Liu, Z Jin, W

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Publisher:: AMER CHEMICAL SOC
Publication Type:: Journal Article
Citation:: ACS Appl Mater Interfaces, 2017, 9, (35), pp. 30024-30034
Issue Date:: 2017-09-06

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Field	Value	Language
dc.contributor.author	Orooji, Y
dc.contributor.author	Liang, F
dc.contributor.author	Razmjou, A
dc.contributor.author	Li, S
dc.contributor.author	Mofid, MR
dc.contributor.author	Liu, Q
dc.contributor.author	Guan, K
dc.contributor.author	Liu, Z
dc.contributor.author	Jin, W
dc.date.accessioned	2023-03-27T00:02:38Z
dc.date.available	2023-03-27T00:02:38Z
dc.date.issued	2017-09-06
dc.identifier.citation	ACS Appl Mater Interfaces, 2017, 9, (35), pp. 30024-30034
dc.identifier.issn	1944-8244
dc.identifier.issn	1944-8252
dc.identifier.uri	http://hdl.handle.net/10453/168487
dc.description.abstract	Flux and antifouling properties of mixed matrix membranes (MMMs) are yet to attain satisfactory status. The objective of this study is to find a method for mitigating the biofouling of poly(ether sulfone) (PES) ultrafiltration membranes via blending of thermoexfoliated vermiculite (VMT). Flow cytometry analysis shows that the behaviors of Bacillus subtilis 168 as a Gram-positive bacterium and Escherichia coli DH5 alpha as a Gram-negative bacterium were different. Hence, cell property is a suspected contributory factor in biofilm formation. Accordingly, considering the local predominant bacterial strains, a regionally customized membrane could scientifically be an expert solution for biofouling mitigation. Fabricated composite membranes have shown a higher flux compared to control PES membrane. Among all composite membranes, the PES-VMT0.10 had the highest flux of 476.4 L/(m2 h) (LMH) before fouling, and the highest flux of 210.7 LMH after three cycles of usage. In addition, the rejection rate of the PES-VMT0.15 The bovine serum albumin (BSA) sample was >77%, while that of the PES-VMT0.10 was >84%. The results of the static BSA adsorption test and the bacterial attachment test indicated that the membranes with macro-roughness on their surface showed better antibiofouling resistance. The antifouling properties of the modified membranes were also improved, because of their optimal wettability. On one hand, the hydrophilicity of membranes caused damaging both Gram-positive and Gram-negative bacteria and bacteriocidal effect. On the other hand, BSA adsorption and bacterial attachment on the membrane surface were affected by pore diameter.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	AMER CHEMICAL SOC
dc.relation.ispartof	ACS Appl Mater Interfaces
dc.relation.isbasedon	10.1021/acsami.7b06646
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	03 Chemical Sciences, 09 Engineering
dc.subject.classification	Nanoscience & Nanotechnology
dc.title	Excellent Biofouling Alleviation of Thermoexfoliated Vermiculite Blended Poly(ether sulfone) Ultrafiltration Membrane.
dc.type	Journal Article
utslib.citation.volume	9
utslib.location.activity	United States
utslib.for	03 Chemical Sciences
utslib.for	09 Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2023-03-27T00:02:37Z
pubs.issue	35
pubs.publication-status	Published
pubs.volume	9
utslib.citation.issue	35

Abstract:

Flux and antifouling properties of mixed matrix membranes (MMMs) are yet to attain satisfactory status. The objective of this study is to find a method for mitigating the biofouling of poly(ether sulfone) (PES) ultrafiltration membranes via blending of thermoexfoliated vermiculite (VMT). Flow cytometry analysis shows that the behaviors of Bacillus subtilis 168 as a Gram-positive bacterium and Escherichia coli DH5 alpha as a Gram-negative bacterium were different. Hence, cell property is a suspected contributory factor in biofilm formation. Accordingly, considering the local predominant bacterial strains, a regionally customized membrane could scientifically be an expert solution for biofouling mitigation. Fabricated composite membranes have shown a higher flux compared to control PES membrane. Among all composite membranes, the PES-VMT0.10 had the highest flux of 476.4 L/(m2 h) (LMH) before fouling, and the highest flux of 210.7 LMH after three cycles of usage. In addition, the rejection rate of the PES-VMT0.15 The bovine serum albumin (BSA) sample was >77%, while that of the PES-VMT0.10 was >84%. The results of the static BSA adsorption test and the bacterial attachment test indicated that the membranes with macro-roughness on their surface showed better antibiofouling resistance. The antifouling properties of the modified membranes were also improved, because of their optimal wettability. On one hand, the hydrophilicity of membranes caused damaging both Gram-positive and Gram-negative bacteria and bacteriocidal effect. On the other hand, BSA adsorption and bacterial attachment on the membrane surface were affected by pore diameter.

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http://hdl.handle.net/10453/168487