Selective production of volatile fatty acids at different pH in an anaerobic membrane bioreactor

Khan, MA; Ngo, HH; Guo, W; Chang, SW; Nguyen, DD; Varjani, S; Liu, Y; Deng, L; Cheng, C

Selective production of volatile fatty acids at different pH in an anaerobic membrane bioreactor

Khan, MA Ngo, HH

Guo, W

Chang, SW Nguyen, DD Varjani, S Liu, Y Deng, L Cheng, C

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Publication Type:: Journal Article
Citation:: Bioresource Technology, 2019, 283 pp. 120 - 128
Issue Date:: 2019-07-01

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Field	Value	Language
dc.contributor.author	Khan, MA	en_US
dc.contributor.author	Ngo, HH https://orcid.org/0000-0002-0296-2866	en_US
dc.contributor.author	Guo, W https://orcid.org/0000-0001-5542-2858	en_US
dc.contributor.author	Chang, SW	en_US
dc.contributor.author	Nguyen, DD	en_US
dc.contributor.author	Varjani, S	en_US
dc.contributor.author	Liu, Y	en_US
dc.contributor.author	Deng, L	en_US
dc.contributor.author	Cheng, C	en_US
dc.date.available	2021-08-12T19:00:45Z
dc.date.issued	2019-07-01	en_US
dc.identifier.citation	Bioresource Technology, 2019, 283 pp. 120 - 128	en_US
dc.identifier.issn	0960-8524	en_US
dc.identifier.uri	http://hdl.handle.net/10453/135202
dc.description.abstract	© 2019 Elsevier Ltd This study investigated the production of major volatile fatty acid (VFA) components in an anaerobic membrane bioreactor (AnMBR) to treat low-strength synthetic wastewater. No selective inhibition was applied for methane production and solvent-extraction method was used for VFA extraction. The results showed acetic and propionic acid were the predominant VFA components at pH 7.0 and 6.0 with concentrations of 1.444 ± 0.051 and 0.516 ± 0.032 mili-mol/l respectively. At pH 12.0 isobutyric acid was the major VFA component with a highest concentration of 0.712 ± 0.008 mili-mol/l. The highest VFA yield was 48.74 ± 1.5 mg VFA/100 mg CODfeed at pH 7.0. At different pH, AnMBR performance was evaluated in terms of COD, nutrient removal and membrane fouling rate. It was observed that the membrane fouled at a faster rate in both acidic and alkaline pH conditions, the slowest rate in membrane fouling was observed at pH 7.0.	en_US
dc.relation.ispartof	Bioresource Technology	en_US
dc.relation.isbasedon	10.1016/j.biortech.2019.03.073	en_US
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject.classification	Biotechnology	en_US
dc.subject.mesh	Fatty Acids, Volatile	en_US
dc.subject.mesh	Bioreactors	en_US
dc.subject.mesh	Anaerobiosis	en_US
dc.subject.mesh	Hydrogen-Ion Concentration	en_US
dc.subject.mesh	Waste Water	en_US
dc.title	Selective production of volatile fatty acids at different pH in an anaerobic membrane bioreactor	en_US
dc.type	Journal Article
utslib.citation.volume	283	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	283	en_US

Abstract:

© 2019 Elsevier Ltd This study investigated the production of major volatile fatty acid (VFA) components in an anaerobic membrane bioreactor (AnMBR) to treat low-strength synthetic wastewater. No selective inhibition was applied for methane production and solvent-extraction method was used for VFA extraction. The results showed acetic and propionic acid were the predominant VFA components at pH 7.0 and 6.0 with concentrations of 1.444 ± 0.051 and 0.516 ± 0.032 mili-mol/l respectively. At pH 12.0 isobutyric acid was the major VFA component with a highest concentration of 0.712 ± 0.008 mili-mol/l. The highest VFA yield was 48.74 ± 1.5 mg VFA/100 mg CODfeed at pH 7.0. At different pH, AnMBR performance was evaluated in terms of COD, nutrient removal and membrane fouling rate. It was observed that the membrane fouled at a faster rate in both acidic and alkaline pH conditions, the slowest rate in membrane fouling was observed at pH 7.0.

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http://hdl.handle.net/10453/135202