Ecological impact of the antibiotic ciprofloxacin on microbial community of aerobic activated sludge

Kim, D; Nguyen, LN; Oh, S

Ecological impact of the antibiotic ciprofloxacin on microbial community of aerobic activated sludge

Kim, D Nguyen, LN

Oh, S

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Publication Type:: Journal Article
Citation:: Environmental Geochemistry and Health, 2019
Issue Date:: 2019-01-01

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Field	Value	Language
dc.contributor.author	Kim, D	en_US
dc.contributor.author	Nguyen, LN https://orcid.org/0000-0001-5360-886X	en_US
dc.contributor.author	Oh, S	en_US
dc.date.available	2019-08-08	en_US
dc.date.issued	2019-01-01	en_US
dc.identifier.citation	Environmental Geochemistry and Health, 2019	en_US
dc.identifier.issn	0269-4042	en_US
dc.identifier.uri	http://hdl.handle.net/10453/135456
dc.description.abstract	© 2019, Springer Nature B.V. This study investigated the effects and fate of the antibiotic ciprofloxacin (CIP) at environmentally relevant levels (50–500 µg/L) in activated sludge (AS) microbial communities under aerobic conditions. Exposure to 500 µg/L of CIP decreased species diversity by about 20% and significantly altered the phylogenetic structure of AS communities compared to those of control communities (no CIP exposure), while there were no significant changes upon exposure to 50 µg/L of CIP. Analysis of community composition revealed that exposure to 500 µg/L of CIP significantly reduced the relative abundance of Rhodobacteraceae and Nakamurellaceae by more than tenfold. These species frequently occur in AS communities across many full-scale wastewater treatment plants and are involved in key ecosystem functions (i.e., organic matter and nitrogen removal). Our analyses showed that 50–500 µg/L CIP was poorly removed in AS (about 20% removal), implying that the majority of CIP from AS processes may be released with either their effluents or waste sludge. We therefore strongly recommend further research on CIP residuals and/or post-treatment processes (e.g., anaerobic digestion) for waste streams that may cause ecological risks in receiving water bodies.	en_US
dc.relation.ispartof	Environmental Geochemistry and Health	en_US
dc.relation.isbasedon	10.1007/s10653-019-00392-6	en_US
dc.subject.classification	Environmental Sciences	en_US
dc.title	Ecological impact of the antibiotic ciprofloxacin on microbial community of aerobic activated sludge	en_US
dc.type	Journal Article
utslib.for	04 Earth Sciences	en_US
utslib.for	05 Environmental Sciences	en_US
utslib.for	11 Medical and Health Sciences	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

Abstract:

© 2019, Springer Nature B.V. This study investigated the effects and fate of the antibiotic ciprofloxacin (CIP) at environmentally relevant levels (50–500 µg/L) in activated sludge (AS) microbial communities under aerobic conditions. Exposure to 500 µg/L of CIP decreased species diversity by about 20% and significantly altered the phylogenetic structure of AS communities compared to those of control communities (no CIP exposure), while there were no significant changes upon exposure to 50 µg/L of CIP. Analysis of community composition revealed that exposure to 500 µg/L of CIP significantly reduced the relative abundance of Rhodobacteraceae and Nakamurellaceae by more than tenfold. These species frequently occur in AS communities across many full-scale wastewater treatment plants and are involved in key ecosystem functions (i.e., organic matter and nitrogen removal). Our analyses showed that 50–500 µg/L CIP was poorly removed in AS (about 20% removal), implying that the majority of CIP from AS processes may be released with either their effluents or waste sludge. We therefore strongly recommend further research on CIP residuals and/or post-treatment processes (e.g., anaerobic digestion) for waste streams that may cause ecological risks in receiving water bodies.

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http://hdl.handle.net/10453/135456