Comparison of existing models to simulate anaerobic digestion of lipid-rich waste

Béline, F. ; Rodriguez Mendez, R. ; Girault, R. ; Le Bihan, Y. ; Lessard, P.

Type de document
Article de revue scientifique à comité de lecture
Langue
Anglais
Affiliation de l'auteur
IRSTEA RENNES UR OPAALE FRA ; IRSTEA RENNES UR OPAALE FRA ; IRSTEA RENNES UR OPAALE FRA ; CENTRE DE RECHERCHE INDUSTRIELLE DU QUEBEC CAN ; UNIVERSITE DE LAVAL DEPARTEMENT DE GENIE CIVIL ET DE GENIE DES EAUX QUEBEC CAN
Année
2017
Résumé / Abstract
Models for anaerobic digestion of lipid-rich waste taking inhibition into account were reviewed and, if necessary, adjusted to the ADM1 model framework in order to compare them. Experimental data from anaerobic digestion of slaughterhouse waste at an organic loading rate (OLR) ranging from 0.3 to 1.9kgVSm'3d'1 were used to compare and evaluate models. Experimental data obtained at low OLRs were accurately modeled whatever the model thereby validating the stoichiometric parameters used and influent fractionation. However, at higher OLRs, although inhibition parameters were optimized to reduce differences between experimental and simulated data, no model was able to accurately simulate accumulation of substrates and intermediates, mainly due to the wrong simulation of pH. A simulation using pH based on experimental data showed that acetogenesis and methanogenesis were the most sensitive steps to LCFA inhibition and enabled identification of the inhibition parameters of both steps. © 2016 Elsevier Ltd
Source
Bioresource Technology, vol. 226, p. 99 - 107

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