Dynamic Effect of Operational Regulation on the Mesophilic BioMethanation of Grape Marc

Wine production annually generates an estimated 11 million metric tonnes of grape marc (GM) worldwide. The diversion of this organic waste away from landfill and towards its use in the generation of renewable energy has been investigated. This study aimed to evaluate the effectiveness of operational...

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Autores principales:	Josue Kassongo, Esmaeil Shahsavari, Andrew S. Ball
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	anaerobic digestion grape marc mesophilic substrate-to-inoculum ratio waste management winery Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/f610fd7e28ab420db29d095f436fc748
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spelling	oai:doaj.org-article:f610fd7e28ab420db29d095f436fc7482021-11-11T18:38:42ZDynamic Effect of Operational Regulation on the Mesophilic BioMethanation of Grape Marc10.3390/molecules262166921420-3049https://doaj.org/article/f610fd7e28ab420db29d095f436fc7482021-11-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/21/6692https://doaj.org/toc/1420-3049Wine production annually generates an estimated 11 million metric tonnes of grape marc (GM) worldwide. The diversion of this organic waste away from landfill and towards its use in the generation of renewable energy has been investigated. This study aimed to evaluate the effectiveness of operational parameters relating to the treatment regime and inoculum source in the extraction of methane from GM under unmixed anaerobic conditions at 35 °C. The study entailed the recirculation of a previously acclimated sludge (120 days) as downstream inoculum, an increased loading volume (1.3 kg) and a low substrate-to-inoculum ratio (10:3 SIR). The results showed that an incorporation of accessible operational controls can effectively enhance cumulative methane yield (0.145 m<sup>3</sup> CH<sub>4</sub> kg<sup>−1</sup> VS), corresponding to higher amounts of digestible organics converted. The calculated average volumetric methane productivity equalled 0.8802 L CH<sub>4</sub> L<sub>Work</sub><sup>−1</sup> d<sup>−1</sup> over 33.6 days whilst moderate pollutant removal (43.50% COD removal efficiency) was achieved. Molecular analyses identified <i>Firmicutes</i> and <i>Bacteroidetes</i> phyla as core organisms for hydrolytic and fermentative stages in trophic relationships with terminal electron acceptors from the methane-producing <i>Methanosarcina</i> genus. Economic projections established that the cost-effective operational enhancements were sustainable for valorisation from grape marc by existing wineries and distilleries.Josue KassongoEsmaeil ShahsavariAndrew S. BallMDPI AGarticleanaerobic digestiongrape marcmesophilicsubstrate-to-inoculum ratiowaste managementwineryOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6692, p 6692 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	anaerobic digestion grape marc mesophilic substrate-to-inoculum ratio waste management winery Organic chemistry QD241-441
spellingShingle	anaerobic digestion grape marc mesophilic substrate-to-inoculum ratio waste management winery Organic chemistry QD241-441 Josue Kassongo Esmaeil Shahsavari Andrew S. Ball Dynamic Effect of Operational Regulation on the Mesophilic BioMethanation of Grape Marc
description	Wine production annually generates an estimated 11 million metric tonnes of grape marc (GM) worldwide. The diversion of this organic waste away from landfill and towards its use in the generation of renewable energy has been investigated. This study aimed to evaluate the effectiveness of operational parameters relating to the treatment regime and inoculum source in the extraction of methane from GM under unmixed anaerobic conditions at 35 °C. The study entailed the recirculation of a previously acclimated sludge (120 days) as downstream inoculum, an increased loading volume (1.3 kg) and a low substrate-to-inoculum ratio (10:3 SIR). The results showed that an incorporation of accessible operational controls can effectively enhance cumulative methane yield (0.145 m<sup>3</sup> CH<sub>4</sub> kg<sup>−1</sup> VS), corresponding to higher amounts of digestible organics converted. The calculated average volumetric methane productivity equalled 0.8802 L CH<sub>4</sub> L<sub>Work</sub><sup>−1</sup> d<sup>−1</sup> over 33.6 days whilst moderate pollutant removal (43.50% COD removal efficiency) was achieved. Molecular analyses identified <i>Firmicutes</i> and <i>Bacteroidetes</i> phyla as core organisms for hydrolytic and fermentative stages in trophic relationships with terminal electron acceptors from the methane-producing <i>Methanosarcina</i> genus. Economic projections established that the cost-effective operational enhancements were sustainable for valorisation from grape marc by existing wineries and distilleries.
format	article
author	Josue Kassongo Esmaeil Shahsavari Andrew S. Ball
author_facet	Josue Kassongo Esmaeil Shahsavari Andrew S. Ball
author_sort	Josue Kassongo
title	Dynamic Effect of Operational Regulation on the Mesophilic BioMethanation of Grape Marc
title_short	Dynamic Effect of Operational Regulation on the Mesophilic BioMethanation of Grape Marc
title_full	Dynamic Effect of Operational Regulation on the Mesophilic BioMethanation of Grape Marc
title_fullStr	Dynamic Effect of Operational Regulation on the Mesophilic BioMethanation of Grape Marc
title_full_unstemmed	Dynamic Effect of Operational Regulation on the Mesophilic BioMethanation of Grape Marc
title_sort	dynamic effect of operational regulation on the mesophilic biomethanation of grape marc
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f610fd7e28ab420db29d095f436fc748
work_keys_str_mv	AT josuekassongo dynamiceffectofoperationalregulationonthemesophilicbiomethanationofgrapemarc AT esmaeilshahsavari dynamiceffectofoperationalregulationonthemesophilicbiomethanationofgrapemarc AT andrewsball dynamiceffectofoperationalregulationonthemesophilicbiomethanationofgrapemarc
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Dynamic Effect of Operational Regulation on the Mesophilic BioMethanation of Grape Marc

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