Impacts of mixing on foaming, methane production, stratification and microbial community in full-scale anaerobic co-digestion process.

Anaerobiosis Biological Oxygen Demand Analysis Bioreactors Methane / biosynthesis Microbiota RNA, Ribosomal, 16S / genetics Sewage
Anaerobic co-digestion Biomolecular techniques Digester mixing Foaming Microbial community

Journal

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

Informations de publication

Date de publication:
Jun 2019
Historique:
received: 15 01 2019
revised: 15 02 2019
accepted: 16 02 2019
pubmed: 3 3 2019
medline: 10 9 2019
entrez: 3 3 2019
Statut: ppublish

Résumé

This study investigated the impact of mixing on key factors including foaming, substrate stratification, methane production and microbial community in three full scale anaerobic digesters. Digester foaming was observed at one plant that co-digested sewage sludge and food waste, and was operated without mixing. The lack of mixing led to uneven distribution of total chemical oxygen demand (tCOD) and volatile solid (VS) as well as methane production within the digester. 16S rRNA gene-based community analysis clearly differentiated the microbial community from the top and bottom. By contrast, foaming and substrate stratification were not observed at the other two plants with internal circulation mixing. The abundance of methanogens (Methanomicrobia) at the top was about four times higher than at the bottom, correlating to much higher methane production from the top verified by ex-situ biomethane assay, causing foaming. This result is consistent with foaming potential assessment of digestate samples from the digester.

Identifiants

DOI: 10.1016/j.biortech.2019.02.077 PMID: 30825825
pubmed: 30825825
pii: S0960-8524(19)30285-8
doi: 10.1016/j.biortech.2019.02.077
pii:
doi:

Substances chimiques

RNA, Ribosomal, 16S 0
Sewage 0
Methane OP0UW79H66

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

226-233

Informations de copyright

Copyright © 2019 Elsevier Ltd. All rights reserved.

Auteurs

Luong N Nguyen (LN)

Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia. Electronic address: luongngoc.nguyen@uts.edu.au.

Md Abu Hasan Johir (MAH)

Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia.

Audrey Commault (A)

Climate Change Cluster (C3), University of Technology Sydney, NSW 2007, Australia.

Heriberto Bustamante (H)

Sydney Water, Parramatta, NSW 2124, Australia.

Robert Aurisch (R)

Sydney Water, Parramatta, NSW 2124, Australia.

Rebecca Lowrie (R)

Sydney Water, Parramatta, NSW 2124, Australia.

Long D Nghiem (LD)

Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia; NTT Institute of Hi-Technology, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam.

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Classifications MeSH

questionsmedicales.fr › Métabolisme › Anaérobiose › Impacts of mixing on foaming, methane...
questionsmedicales.fr › Environnement et santé publique › Santé publique › Pratiques en santé publique › Surveillance de l'environnement › Analyse de la demande biologique en oxygène › Impacts of mixing on foaming, methane...
questionsmedicales.fr › Technologie, industrie et agriculture › Technologie › Biotechnologie › Bioréacteurs › Impacts of mixing on foaming, methane...
questionsmedicales.fr › Composés chimiques organiques › Hydrocarbures › Hydrocarbures acycliques › Alcanes › Méthane › Impacts of mixing on foaming, methane...
questionsmedicales.fr › Environnement et santé publique › Environnement › Écosystème › Biodiversité › Biote › Microbiote › Impacts of mixing on foaming, methane...
questionsmedicales.fr › Acides nucléiques, nucléotides et nucléosides › Acides nucléiques › ARN › ARN ribosomique › ARN ribosomique 16S › Impacts of mixing on foaming, methane...
questionsmedicales.fr › Mélanges complexes › Eaux d'égout › Impacts of mixing on foaming, methane...