Volatile fatty acids bio-production using extracellular polymeric substances disengaged from sludge for carbon source recycling.

Sewage Extracellular Polymeric Substance Matrix Carbon Hydrogen-Ion Concentration Fermentation Fatty Acids, Volatile
Extracellular polymeric substances Interspecific interaction network Microbial community Resource recovery Volatile fatty acids

Journal

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

Informations de publication

Date de publication:
Oct 2023
Historique:
received: 18 06 2023
revised: 19 07 2023
accepted: 25 07 2023
medline: 14 8 2023
pubmed: 29 7 2023
entrez: 28 7 2023
Statut: ppublish

Résumé

Excessive waste-activated sludge (WAS) and insufficient carbon source (CS) for biological nitrogen removal (BNR) often coexist in municipal sewage treatment. Although the production of volatile fatty acids (VFAs) from WAS has been recognized as a promising solution, the development is limited by low VFAs production efficiency and dewatering deterioration of sludge. This study extracted the extracellular polymeric substances (EPS) from sludge by low-temperature thermal-hydrolysis (LTH) and high-speed hydro-cyclone (HSHC) pretreatment and recovered it for high-quality VFAs bio-production in thermophilic fermentation. Microbial mechanism analysis disclosed that interspecific interaction networks composed of functional flora, which accumulate VFAs by bio-converting EPS primarily and supplemented by EPS synthesis, guaranteed the efficient bio-production of VFAs. This process scheme shows promise in providing alternative denitrification CSs and avoiding deterioration of sludge dewaterability.

Identifiants

DOI: 10.1016/j.biortech.2023.129565 PMID: 37506926
pubmed: 37506926
pii: S0960-8524(23)00993-8
doi: 10.1016/j.biortech.2023.129565
pii:
doi:

Substances chimiques

Sewage 0
Carbon 7440-44-0
Fatty Acids, Volatile 0

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

129565

Informations de copyright

Copyright © 2023 Elsevier Ltd. All rights reserved.

Déclaration de conflit d'intérêts

Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Auteurs

Xiqi Li (X)

State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China; State Key Laboratory of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, China.

Zhe Yu (Z)

State Key Laboratory of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, China.

Xiaoli Ge (X)

Tianjin Municipal Engineering Design & Research Institute Co. Ltd., Tianjin 300000, China.

Wenzhe Zhang (W)

CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.

Yingke Fang (Y)

School of Ecology and Environment, Zhengzhou University, Zhengzhou 450002, China.

Wenzong Liu (W)

State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China; State Key Laboratory of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, China. Electronic address: liuwenzong@hit.edu.cn.

Aijie Wang (A)

State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China; State Key Laboratory of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, China; CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.

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Classifications MeSH

questionsmedicales.fr › Mélanges complexes › Eaux d'égout › Volatile fatty acids bio-production using...
questionsmedicales.fr › Phénomènes microbiologiques › Biofilms › Matrice de substances polymériques extracellulaires › Volatile fatty acids bio-production using...
questionsmedicales.fr › Produits chimiques inorganiques › Éléments › Carbone › Volatile fatty acids bio-production using...
questionsmedicales.fr › Phénomènes chimiques › Concentration en ions d'hydrogène › Volatile fatty acids bio-production using...
questionsmedicales.fr › Métabolisme › Métabolisme glucidique › Fermentation › Volatile fatty acids bio-production using...
questionsmedicales.fr › Lipides › Acides gras › Acides gras volatils › Volatile fatty acids bio-production using...