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Characterization of the extracellular polymeric substances and microbial community of aerobic granulation sludge exposed to cefalexin

Kong, Qiang, Wang, Zhi-Bin, Shu, Li and Miao, Ming-Sheng 2015, Characterization of the extracellular polymeric substances and microbial community of aerobic granulation sludge exposed to cefalexin, International biodeterioration and biodegradation, vol. 102, pp. 375-382, doi: 10.1016/j.ibiod.2015.04.020.

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Title Characterization of the extracellular polymeric substances and microbial community of aerobic granulation sludge exposed to cefalexin
Author(s) Kong, Qiang
Wang, Zhi-Bin
Shu, Li
Miao, Ming-Sheng
Journal name International biodeterioration and biodegradation
Volume number 102
Start page 375
End page 382
Total pages 8
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2015-08
ISSN 0964-8305
1879-0208
Keyword(s) Aerobic granulation
Cefalexin (CLX)
Excitation emission matrix (EEM)
Extracellular polymeric substances (EPS)
Microbial community
Science & Technology
Life Sciences & Biomedicine
Biotechnology & Applied Microbiology
Environmental Sciences
Environmental Sciences & Ecology
PHARMACEUTICAL WASTE-WATER
BATCH AIRLIFT REACTOR
MEMBRANE BIOREACTOR
REMOVAL
ANTIBIOTICS
PERFORMANCE
TETRACYCLINE
ENHANCEMENT
GRANULES
MATRIX
Summary This study characterizes the extracellular polymeric substances and bacterial community composition of aerobic granules exposed to cefalexin (CLX). The presence of CLX potentially decreases granular stabilities, resulting in a lowered granule diameter. Chemical oxygen demand and NH4+-N removal efficiencies were slightly decreased and the denitrification process was inhibited with CLX addition. Extracellular polymeric substance contents were significantly increased in aerobic granules exposed to CLX. The shifts of fluorescence intensities and peak locations in 3D-EEM fluorescence spectra indicated changes of EPS components. High-throughput sequencing analysis showed aerobic granules with CLX addition in synthetic wastewater had superior diversity of microbial species, and this was the reason that the level and components of EPS changed. The species richness for bacteria was increased from 341 to 352, which was revealed by Chao1. The Shannon index of diversity rose slightly from 3.59 to 3.73 with CLX addition. The abundance of Proteobacteria significantly decreased, while the abundance of Bacteroidetes and Chloroflexi underwent a highly significant increase in aerobic granules exposed to CLX.
Notes CESE-2014 – Challenges in Environmental Science and Engineering Series Conference
Language eng
DOI 10.1016/j.ibiod.2015.04.020
Field of Research 090409 Wastewater Treatment Processes
Socio Economic Objective 961101 Physical and Chemical Conditions of Water for Urban and Industrial Use
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30074912

Document type: Journal Article
Collection: School of Engineering
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Created: Thu, 27 Aug 2015, 15:23:28 EST

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