Understanding of aerobic sludge granulation enhanced by sludge retention time in the aspect of quorum sensing.

Acyl-Butyrolactones / metabolism Bioreactors Quorum Sensing Sewage Tryptophan / metabolism
Acylated homoserine lactones (AHLs) Aerobic granular sludge Extracellular polymeric substance (EPS) Quorum sensing (QS) Sludge retention time (SRT)

Journal

Bioresource technology
ISSN: 1873-2976
Titre abrégé: Bioresour Technol
Pays: England
ID NLM: 9889523

Informations de publication

Date de publication:
Jan 2019
Historique:
received: 05 09 2018
revised: 09 10 2018
accepted: 11 10 2018
pubmed: 21 10 2018
medline: 1 8 2019
entrez: 21 10 2018
Statut: ppublish

Résumé

Aerobic granular sludge (AGS) reactors with different sludge retention times (SRTs) were established for enhanced functional microorganism enrichment and granular formation. Results showed that higher total nitrogen (TN) removal efficiency and compact granules were achieved in the 6-day-SRT reactor. Also, Xanthomonadaceae, Rhodobacteraceae and Hyphomonadaceae with AHL-producing and EPS-secreting functions also enriched under 6-day SRT. For investigating the enhanced mechanism of sludge granulation, typical quorum sensing signals of acylated-homoserine-lactones (AHLs) and extracellular polymeric substances (EPS) were analyzed. Tryptophan-and-protein-like substances were major EPS components in granules formed at 6-day SRT. Meanwhile, most detected AHLs, i.e. C8-HSL and 3OHC8-HSL, were correlated positively with contents of tryptophan-and-protein-like substances. According to AHLs add-back test, AHLs especially those with 8-carbon sidechains, played important roles in aerobic sludge granulation via secreting special extracellular proteins by functional microbes enrichment.

Identifiants

DOI: 10.1016/j.biortech.2018.10.027 PMID: 30342427
pubmed: 30342427
pii: S0960-8524(18)31448-2
doi: 10.1016/j.biortech.2018.10.027
pii:
doi:

Substances chimiques

Acyl-Butyrolactones 0
Sewage 0
Tryptophan 8DUH1N11BX

Types de publication

Journal Article

Langues

eng

Pagination

226-234

Informations de copyright

Copyright © 2018 Elsevier Ltd. All rights reserved.

Auteurs

Zhiming Zhang (Z)

Institute of Environmental Pollution Control and Treatment, Zhejiang University, Hangzhou 310058, China.

Zhuodong Yu (Z)

Institute of Environmental Pollution Control and Treatment, Zhejiang University, Hangzhou 310058, China.

Zihao Wang (Z)

Institute of Environmental Pollution Control and Treatment, Zhejiang University, Hangzhou 310058, China.

Ke Ma (K)

Institute of Environmental Pollution Control and Treatment, Zhejiang University, Hangzhou 310058, China.

Xiangyang Xu (X)

Institute of Environmental Pollution Control and Treatment, Zhejiang University, Hangzhou 310058, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou 310058, China; Zhejiang Provincial Engineering Laboratory of Water Pollution Control, 388 Yuhangtang Road, Hangzhou 310058, China.

Pedro J J Alvarezc (PJJ)

Department of Civil and Environmental Engineering, Rice University, 6100 Main St., Houston, TX 77005, USA.

Liang Zhu (L)

Institute of Environmental Pollution Control and Treatment, Zhejiang University, Hangzhou 310058, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou 310058, China; Zhejiang Provincial Engineering Laboratory of Water Pollution Control, 388 Yuhangtang Road, Hangzhou 310058, China. Electronic address: felix79cn@zju.edu.cn.

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Classifications MeSH

questionsmedicales.fr › Composés chimiques organiques › Lactones › Acyl-butyrolactones › Understanding of aerobic sludge granulation...
questionsmedicales.fr › Technologie, industrie et agriculture › Technologie › Biotechnologie › Bioréacteurs › Understanding of aerobic sludge granulation...
questionsmedicales.fr › Phénomènes microbiologiques › Interactions microbiennes › Détection du quorum › Understanding of aerobic sludge granulation...
questionsmedicales.fr › Mélanges complexes › Eaux d'égout › Understanding of aerobic sludge granulation...
questionsmedicales.fr › Acides aminés, peptides et protéines › Acides aminés › Acides aminés essentiels › Tryptophane › Understanding of aerobic sludge granulation...