Effects of stepwise thermal hydrolysis and solid-liquid separation on three different sludge organic matter solubilization and biodegradability.

Anaerobiosis Biofuels Hydrolysis Methane Sewage
Dewatered sludge Mass balance Organic solubilization Separate digestion Thermal hydrolysis

Journal

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

Informations de publication

Date de publication:
Oct 2019
Historique:
received: 03 05 2019
revised: 29 06 2019
accepted: 01 07 2019
pubmed: 20 7 2019
medline: 19 9 2019
entrez: 20 7 2019
Statut: ppublish

Résumé

Separate digestion after pretreatment could be a promising process for sludge treatment. In this study, a novel process coupling two-step thermal hydrolysis pretreatment (THP) and separate digestion of liquid and solid fractions was applied on three different sludge to investigate the organic components solubilization and methane production potentials based on mass balance. Results showed that 61.94-69.08% of protein and 84.19-86.75% of polysaccharides were dissolved, while only 35.20-38.55% and 61.61-69.92% were detected in the liquid fraction, respectively. This indicated that not only disintegration and dissolution, but also hydrolysis occurred during THP. Organic matter was mainly dissolved in the first-step THP, and protein and VFAs were the main components. Although separate digestion did not improve the total methane production, the liquid fractions contributed 51.08-73.92% to the sum of liquid and solid fractions. The organic solubilization and biogas production are essentially related to the organic components, instead of the total organic content.

Identifiants

DOI: 10.1016/j.biortech.2019.121753 PMID: 31323507
pubmed: 31323507
pii: S0960-8524(19)30983-6
doi: 10.1016/j.biortech.2019.121753
pii:
doi:

Substances chimiques

Biofuels 0
Sewage 0
Methane OP0UW79H66

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

121753

Informations de copyright

Copyright © 2019 Elsevier Ltd. All rights reserved.

Auteurs

Donghai Yang (D)

State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China.

Xiaohu Dai (X)

State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, PR China. Electronic address: daixiaohu@tongji.edu.cn.

Liang Song (L)

State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China.

Lingling Dai (L)

State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China.

Bin Dong (B)

State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China.

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Classifications MeSH

questionsmedicales.fr › Métabolisme › Anaérobiose › Effects of stepwise thermal hydrolysis and...
questionsmedicales.fr › Environnement et santé publique › Environnement › Ressources de production d'énergie › Énergie renouvelable › Biocarburants › Effects of stepwise thermal hydrolysis and...
questionsmedicales.fr › Phénomènes chimiques › Hydrolyse › Effects of stepwise thermal hydrolysis and...
questionsmedicales.fr › Composés chimiques organiques › Hydrocarbures › Hydrocarbures acycliques › Alcanes › Méthane › Effects of stepwise thermal hydrolysis and...
questionsmedicales.fr › Mélanges complexes › Eaux d'égout › Effects of stepwise thermal hydrolysis and...