Effects of suspended titanium dioxide nanoparticles on cake layer formation in submerged membrane bioreactor

Zhou, L; Zhang, Z; Xia, S; Jiang, W; Ye, B; Xu, X; Gu, Z; Guo, W; Ngo, HH; Meng, X; Fan, J; Zhao, J

Effects of suspended titanium dioxide nanoparticles on cake layer formation in submerged membrane bioreactor

Zhou, L Zhang, Z Xia, S Jiang, W Ye, B Xu, X Gu, Z Guo, W

Ngo, HH

Meng, X Fan, J Zhao, J

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Publication Type:: Journal Article
Citation:: Bioresource Technology, 2014, 152 pp. 101 - 106
Issue Date:: 2014-01-01

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Field	Value	Language
dc.contributor.author	Zhou, L	en_US
dc.contributor.author	Zhang, Z	en_US
dc.contributor.author	Xia, S	en_US
dc.contributor.author	Jiang, W	en_US
dc.contributor.author	Ye, B	en_US
dc.contributor.author	Xu, X	en_US
dc.contributor.author	Gu, Z	en_US
dc.contributor.author	Guo, W https://orcid.org/0000-0001-5542-2858	en_US
dc.contributor.author	Ngo, HH https://orcid.org/0000-0002-0296-2866	en_US
dc.contributor.author	Meng, X	en_US
dc.contributor.author	Fan, J	en_US
dc.contributor.author	Zhao, J	en_US
dc.date.available	2020-05-25T19:26:40Z
dc.date.issued	2014-01-01	en_US
dc.identifier.citation	Bioresource Technology, 2014, 152 pp. 101 - 106	en_US
dc.identifier.issn	0960-8524	en_US
dc.identifier.uri	http://hdl.handle.net/10453/33350
dc.identifier.uri	http://hdl.handle.net/10453/37035
dc.description.abstract	Effects of the suspended titanium dioxide nanoparticles (TiO2 NPs, 50mg/L) on the cake layer formation in a submerged MBR were systematically investigated. With nanometer sizes, TiO2 NPs were found to aggravate membrane pore blocking but postpone cake layer fouling. TiO2 NPs showed obvious effects on the structure and the distribution of the organic and the inorganic compounds in cake layer. Concentrations of fatty acids and cholesterol in the cake layer increased due to the acute response of bacteria to the toxicity of TiO2 NPs. Line-analysis and dot map of energy-dispersive X-ray were also carried out. Since TiO2 NPs inhibited the interactions between the inorganic and the organic compounds, the inorganic compounds (especially SiO2) were prevented from depositing onto the membrane surface. Thus, the postponed cake layer fouling was due to the changing features of the complexes on the membrane surface caused by TiO2 NPs. © 2013 Elsevier Ltd.	en_US
dc.relation.ispartof	Bioresource Technology	en_US
dc.relation.isbasedon	10.1016/j.biortech.2013.11.006	en_US
dc.subject.classification	Biotechnology	en_US
dc.subject.mesh	Inorganic Chemicals	en_US
dc.subject.mesh	Titanium	en_US
dc.subject.mesh	Organic Chemicals	en_US
dc.subject.mesh	Biopolymers	en_US
dc.subject.mesh	Membranes, Artificial	en_US
dc.subject.mesh	Spectrometry, Fluorescence	en_US
dc.subject.mesh	Bioreactors	en_US
dc.subject.mesh	Sewage	en_US
dc.subject.mesh	Permeability	en_US
dc.subject.mesh	Pressure	en_US
dc.subject.mesh	Gas Chromatography-Mass Spectrometry	en_US
dc.subject.mesh	Nanoparticles	en_US
dc.title	Effects of suspended titanium dioxide nanoparticles on cake layer formation in submerged membrane bioreactor	en_US
dc.type	Journal Article
utslib.citation.volume	152	en_US
utslib.for	0904 Chemical Engineering	en_US
pubs.embargo.period	Not known	en_US
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
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US
pubs.volume	152	en_US

Abstract:

Effects of the suspended titanium dioxide nanoparticles (TiO2 NPs, 50mg/L) on the cake layer formation in a submerged MBR were systematically investigated. With nanometer sizes, TiO2 NPs were found to aggravate membrane pore blocking but postpone cake layer fouling. TiO2 NPs showed obvious effects on the structure and the distribution of the organic and the inorganic compounds in cake layer. Concentrations of fatty acids and cholesterol in the cake layer increased due to the acute response of bacteria to the toxicity of TiO2 NPs. Line-analysis and dot map of energy-dispersive X-ray were also carried out. Since TiO2 NPs inhibited the interactions between the inorganic and the organic compounds, the inorganic compounds (especially SiO2) were prevented from depositing onto the membrane surface. Thus, the postponed cake layer fouling was due to the changing features of the complexes on the membrane surface caused by TiO2 NPs. © 2013 Elsevier Ltd.

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http://hdl.handle.net/10453/33350