Modelling cometabolic biotransformation of sulfamethoxazole by an enriched ammonia oxidizing bacteria culture

Peng, L; Kassotaki, E; Liu, Y; Sun, J; Dai, X; Pijuan, M; Rodriguez-Roda, I; Buttiglieri, G; Ni, BJ

Modelling cometabolic biotransformation of sulfamethoxazole by an enriched ammonia oxidizing bacteria culture

Peng, L Kassotaki, E Liu, Y

Sun, J Dai, X Pijuan, M Rodriguez-Roda, I Buttiglieri, G Ni, BJ

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Publication Type:: Journal Article
Citation:: Chemical Engineering Science, 2017, 173 pp. 465 - 473
Issue Date:: 2017-12-14

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Field	Value	Language
dc.contributor.author	Peng, L	en_US
dc.contributor.author	Kassotaki, E	en_US
dc.contributor.author	Liu, Y https://orcid.org/0000-0001-6677-7961	en_US
dc.contributor.author	Sun, J	en_US
dc.contributor.author	Dai, X	en_US
dc.contributor.author	Pijuan, M	en_US
dc.contributor.author	Rodriguez-Roda, I	en_US
dc.contributor.author	Buttiglieri, G	en_US
dc.contributor.author	Ni, BJ https://orcid.org/0000-0002-1129-7837	en_US
dc.date.issued	2017-12-14	en_US
dc.identifier.citation	Chemical Engineering Science, 2017, 173 pp. 465 - 473	en_US
dc.identifier.issn	0009-2509	en_US
dc.identifier.uri	http://hdl.handle.net/10453/124746
dc.description.abstract	© 2017 Elsevier Ltd Antibiotics such as sulfamethoxazole (SFX) are environmentally hazardous after being released into the aquatic environment and challenges remain in the development of engineered prevention strategies. In this work, a mathematical model was developed to describe and evaluate cometabolic biotransformation of SFX and its transformation products (TPs) in an enriched ammonia oxidizing bacteria (AOB) culture. The growth-linked cometabolic biodegradation by AOB, non-growth transformation by AOB and non-growth transformation by heterotrophs were considered in the model framework. The production of major TPs comprising 4-Nitro-SFX, Desamino-SFX and N4-Acetyl-SFX was also specifically modelled. The validity of the model was demonstrated through testing against literature reported data from extensive batch tests, as well as from long-term experiments in a partial nitritation sequencing batch reactor (SBR) and in a combined SBR + membrane aerated biofilm reactor performing nitrification/denitrification. Modelling results revealed that the removal efficiency of SFX increased with the increase of influent ammonium concentration, whereas the influent organic matter, hydraulic retention time and solid retention time exerted a limited effect on SFX biodegradation with the removal efficiencies varying in a narrow range. The variation of influent SFX concentration had no impact on SFX removal efficiency. The established model framework enables interpretation of a range of experimental observations on SFX biodegradation and helps to identify the optimal conditions for efficient removal.	en_US
dc.relation.ispartof	Chemical Engineering Science	en_US
dc.relation.isbasedon	10.1016/j.ces.2017.08.015	en_US
dc.subject.classification	Chemical Engineering	en_US
dc.title	Modelling cometabolic biotransformation of sulfamethoxazole by an enriched ammonia oxidizing bacteria culture	en_US
dc.type	Journal Article
utslib.citation.volume	173	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	0913 Mechanical Engineering	en_US
utslib.for	0914 Resources Engineering and Extractive Metallurgy	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	closed_access
pubs.publication-status	Published	en_US
pubs.volume	173	en_US

Abstract:

© 2017 Elsevier Ltd Antibiotics such as sulfamethoxazole (SFX) are environmentally hazardous after being released into the aquatic environment and challenges remain in the development of engineered prevention strategies. In this work, a mathematical model was developed to describe and evaluate cometabolic biotransformation of SFX and its transformation products (TPs) in an enriched ammonia oxidizing bacteria (AOB) culture. The growth-linked cometabolic biodegradation by AOB, non-growth transformation by AOB and non-growth transformation by heterotrophs were considered in the model framework. The production of major TPs comprising 4-Nitro-SFX, Desamino-SFX and N4-Acetyl-SFX was also specifically modelled. The validity of the model was demonstrated through testing against literature reported data from extensive batch tests, as well as from long-term experiments in a partial nitritation sequencing batch reactor (SBR) and in a combined SBR + membrane aerated biofilm reactor performing nitrification/denitrification. Modelling results revealed that the removal efficiency of SFX increased with the increase of influent ammonium concentration, whereas the influent organic matter, hydraulic retention time and solid retention time exerted a limited effect on SFX biodegradation with the removal efficiencies varying in a narrow range. The variation of influent SFX concentration had no impact on SFX removal efficiency. The established model framework enables interpretation of a range of experimental observations on SFX biodegradation and helps to identify the optimal conditions for efficient removal.

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http://hdl.handle.net/10453/124746