1. Modelling hydrolysis: Simultaneous versus sequential biodegradation of the hydrolysable fractions
- Author
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Julie Jimenez, Damien J. Batstone, Ángel Robles, Aurora Seco, Fabrice Béline, Cyrille Charnier, Peter A. Vanrolleghem, Mathieu Spérandio, Eberhard Morgenroth, Eric Latrille, Jérôme Harmand, Dominique Patureau, George Ekama, Mokhles Kouas, Jean-Philippe Steyer, Michel Torrijos, Laboratoire de Biotechnologie de l'Environnement [Narbonne] (LBE), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), BioEnTech, Symbiose : Ecosystèmes microbiens et bioprocédés d’épuration et de valorisation (TBI-SYMBIOSE), Toulouse Biotechnology Institute (TBI), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), Optimisation des procédés en Agriculture, Agroalimentaire et Environnement (UR OPAALE), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), University of Cape Town, Université Laval [Québec] (ULaval), Universitat Politècnica de València (UPV), Universitat de València (UV), University of Queensland [Brisbane], Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Institut National de la Recherche Agronomique (INRA), EAWAG SWISS FEDERAL INSTITUTE OF AQUATIC SCIENCE AND TECHNOLOGY DUBENDORF SWE, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), ETH ZURICH INSTITUTE OF ENVIRONMENTAL ENGINEERING ZURICH SWE, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), UNIVERSITY OF CAPE TOWN ZAF, DEPARTAMENT D'ENGINYERIA QUIMICA UNIVERSITAT DE VALENCIA BURJASSOT VALENCIA ESP, and ADVANCED WATER MANAGEMENT CENTRE THE UNIVERSITY OF QUEENSLAND AUS
- Subjects
[SDV.BIO]Life Sciences [q-bio]/Biotechnology ,Biosolids ,SEQUENTIAL EXTRACTION ,ANAEROBIC DIGESTION ,BIODEGRADATION ,02 engineering and technology ,010501 environmental sciences ,TRITICUM AESTIVUM ,01 natural sciences ,7. Clean energy ,NUMERICAL MODEL ,SLUDGE DIGESTION ,Bioreactors ,METHANE ,BIOLOGICAL MATERIALS ,ACTIVATED SLUDGE ,0202 electrical engineering, electronic engineering, information engineering ,Anaerobiosis ,Sequential model ,PRIORITY JOURNAL ,Waste Management and Disposal ,ComputingMilieux_MISCELLANEOUS ,CALIBRATION ,Sewage ,CONCENTRATION (PARAMETER) ,Chemistry ,FRACTIONATION ,ACID HYDROLYSIS ,INCUBATION TIME ,MODELLING ,HYDROLYSIS ,CHEMICAL FRACTIONATION ,SEQUENTIAL DEGRADATION ,Biodegradation, Environmental ,WASTE TREATMENT ,ORGANIC MATTER ,[SDE]Environmental Sciences ,ANAEROBIC DIGESTION MODEL ,ADM1 ,SOLID WASTE ,020209 energy ,MODELS ,Fractionation ,CAPACITY ,Hydrolysis ,DIGESTION ,ISOTOPIC FRACTIONATION ,NONHUMAN ,CHEMICAL OXYGEN DEMAND ,ARTICLE ,MODEL SELECTION ,0105 earth and related environmental sciences ,Chromatography ,Models, Theoretical ,SUBSTRATES ,Biodegradation ,SIMULTANEOUS DEGRADATION ,HOMOGENEOUS MATERIALS ,Anaerobic digestion ,WASTE WATER MANAGEMENT ,Activated sludge ,APPLE ,Degradation (geology) - Abstract
Hydrolysis is considered the limiting step during solid waste anaerobic digestion (including co-digestion of sludge and biosolids). Mechanisms of hydrolysis are mechanistically not well understood with detrimental impact on model predictive capability. The common approach to multiple substrates is to consider simultaneous degradation of the substrates. This may not have the capacity to separate the different kinetics. Sequential degradation of substrates is theoretically supported by microbial capacity and the composite nature of substrates (bioaccessibility concept). However, this has not been experimentally assessed. Sequential chemical fractionation has been successfully used to define inputs for an anaerobic digestion model. In this paper, sequential extractions of organic substrates were evaluated in order to compare both models. By removing each fraction (from the most accessible to the least accessible fraction) from three different substrates, anaerobic incubation tests showed that for physically structured substrates, such as activated sludge and wheat straw, sequential approach could better describe experimental results, while this was less important for homogeneous materials such as pulped fruit. Following this, anaerobic incubation tests were performed on five substrates. Cumulative methane production was modelled by the simultaneous and sequential approaches. Results showed that the sequential model could fit the experimental data for all the substrates whereas simultaneous model did not work for some substrates. © 2019
- Published
- 2020