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Título
Improving the anaerobic digestion process of wine lees by the addition of microparticles
Autor
Año del Documento
2023
Editorial
MDPI
Descripción
Producción Científica
Documento Fuente
Water, 2024, Vol. 16, Nº. 1, 101
Zusammenfassung
Wine lee generation, a by-product of the wine industry, implies economic challenges for producers in terms of management due to its high organic load and low pH value. Biological treatment based on controlled anaerobic digestion may emerge as a viable management alternative given its promising potential for biogas production thanks to the organic content of the substrate. However, the complex properties of wine lees may lead to microbial activity inhibition and process kinetics failure. Various solutions have already been explored, including co-digestion with other substrates, or the application of different pretreatments, to mitigate the effects of the accumulation of phenolic compounds, volatile fatty acids, antioxidants, or the acidic pH value of the medium. In this study, laboratory-scale batch reactors were established, adding iron- (magnetite) or carbon (graphite)-based microparticles to assess their impact on the kinetics of the process. The results demonstrate a significant improvement of 35% in the potential production of biomethane after four days of operation with graphite particles and 42% after five days using magnetite particles. Methane production rates, as determined by the Gompertz model, were 45.38 and 46.54 mL CH4∙gVS−1∙d−1 for the application of graphite and magnetite microparticles to the medium, respectively, compared to the value of 33.46 mL CH4∙gVS−1∙d−1 for the control trial, confirming kinetic process improvements of 36% and 39%, respectively. Evidences of the acceleration of the methanogenesis phase were detected along the essays; however, the strong inhibition mediated by the carboxylate accumulation was not avoided in any of the tested conditions.
Materias (normalizadas)
Biogas
Wine lees
Wine
Graphite
Grafito
Magnetite
Phenols
Fenoles
Biomass energy
Energía de biomasa
Anaerobic digestion
Organic wastes - Recycling
Residuos orgánicos - Reciclaje
Renewable energy resources
Energias renovables
Materias Unesco
3309.29 Vino
3309 Tecnología de Los Alimentos
2510.91 Recursos Renovables
ISSN
2073-4441
Revisión por pares
SI
Patrocinador
Junta de Castilla y León y Unión Euopea (UE)-Fondo Europeo de Desarrollo Regional (FEDER) - (grant CL-EI-2021-07)
Ministerio de Ciencia e Innovación/Agencia Estatal de Investigación (AEI) - (grant PID 2020-114918RB-I00)
Union Europea, Programa LIFE, LIFE SMART AgroMobility - (grant LIFE19 CCM/ES/001206)
Ministerio de Ciencia e Innovación/Agencia Estatal de Investigación (AEI) - (grant PID 2020-114918RB-I00)
Union Europea, Programa LIFE, LIFE SMART AgroMobility - (grant LIFE19 CCM/ES/001206)
Version del Editor
Propietario de los Derechos
© 2023 The authors
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
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