The use of hydrodynamic cavitation for waste-to-energy approach to enhance methane production from waste activated sludge.

Sewage / chemistry Hydrodynamics Waste Disposal, Fluid Anaerobiosis Bioreactors Methane
Disintegration Energy balance Hydrodynamic cavitation Methane production Viscosity Waste activated sludge

Journal

Journal of environmental management
ISSN: 1095-8630
Titre abrégé: J Environ Manage
Pays: England
ID NLM: 0401664

Informations de publication

Date de publication:
01 Dec 2023
Historique:
received: 16 05 2023
revised: 30 06 2023
accepted: 30 08 2023
medline: 1 11 2023
pubmed: 8 10 2023
entrez: 7 10 2023
Statut: ppublish

Résumé

Anaerobic digestion in wastewater treatment plants converts its unwanted end product - waste activated sludge into biogas. Even if the process is well established, pre-treatment of the sludge can further improve its efficiency. In this study, four treatment regimes for increasing methane production through prior sludge disintegration were investigated using lab-scale cavitation generator and real sludge samples. Three different cavitating (attached cavitation regime, developed cloud shedding cavitation regime and cavitation in a wake regime) and one non-cavitating regime at elevated static pressure were studied in detail for their effectiveness on physical and chemical properties of sludge samples. Volume-weighted mean diameter D[4,3] of sludge's particles decreased by up to 92%, specific surface area increased by up to 611%, while viscosity (at a shear rate of 3.0 s

Identifiants

DOI: 10.1016/j.jenvman.2023.119074 PMID: 37804635
pubmed: 37804635
pii: S0301-4797(23)01862-5
doi: 10.1016/j.jenvman.2023.119074
pii:
doi:

Substances chimiques

Sewage 0
Methane OP0UW79H66

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

119074

Informations de copyright

Copyright © 2023 The Authors. Published by 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

Mojca Zupanc (M)

Faculty of Mechanical Engineering, University of Ljubljana, Ljubljana, Slovenia.

Barbara Brajer Humar (BB)

JP CCN Domžale-Kamnik d.o.o., Domžale-Kamnik WWTP, Domžale, Slovenia.

Matevž Dular (M)

Faculty of Mechanical Engineering, University of Ljubljana, Ljubljana, Slovenia.

Jurij Gostiša (J)

Faculty of Mechanical Engineering, University of Ljubljana, Ljubljana, Slovenia.

Marko Hočevar (M)

Faculty of Mechanical Engineering, University of Ljubljana, Ljubljana, Slovenia.

Sabina Kolbl Repinc (SK)

Faculty of Civil and Geodetic Engineering, University of Ljubljana, Ljubljana, Slovenia; National Institute of Chemistry, Hajdrihova Ulica 19, 1000 Ljubljana Slovenia.

Mario Krzyk (M)

Faculty of Civil and Geodetic Engineering, University of Ljubljana, Ljubljana, Slovenia.

Lovrenc Novak (L)

Faculty of Mechanical Engineering, University of Ljubljana, Ljubljana, Slovenia.

Jernej Ortar (J)

Faculty of Mechanical Engineering, University of Ljubljana, Ljubljana, Slovenia.

Žiga Pandur (Ž)

Faculty of Mechanical Engineering, University of Ljubljana, Ljubljana, Slovenia.

Blaž Stres (B)

Faculty of Civil and Geodetic Engineering, University of Ljubljana, Ljubljana, Slovenia; National Institute of Chemistry, Hajdrihova Ulica 19, 1000 Ljubljana Slovenia; Jozef Stefan Institute, Department of Automation, Biocybernetics and Robotics, Ljubljana, Slovenia.

Martin Petkovšek (M)

Faculty of Mechanical Engineering, University of Ljubljana, Ljubljana, Slovenia. Electronic address: martin.petkovsek@fs.uni-lj.si.

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Classifications MeSH

questionsmedicales.fr › Mélanges complexes › Eaux d'égout › The use of hydrodynamic cavitation for...
questionsmedicales.fr › Phénomènes physiques › Hydrodynamique › The use of hydrodynamic cavitation for...
questionsmedicales.fr › Environnement et santé publique › Santé publique › Amélioration du niveau sanitaire › Génie sanitaire › Gestion des déchets › Élimination des déchets › Élimination des déchets liquides › The use of hydrodynamic cavitation for...
questionsmedicales.fr › Métabolisme › Anaérobiose › The use of hydrodynamic cavitation for...
questionsmedicales.fr › Technologie, industrie et agriculture › Technologie › Biotechnologie › Bioréacteurs › The use of hydrodynamic cavitation for...
questionsmedicales.fr › Composés chimiques organiques › Hydrocarbures › Hydrocarbures acycliques › Alcanes › Méthane › The use of hydrodynamic cavitation for...