RT info:eu-repo/semantics/article
T1 Improving the anaerobic digestion process of wine lees by the addition of microparticles
A1 García Álvaro, Alfonso
A1 Ruiz Palomar, César
A1 Hermosilla Redondo, María Daphne
A1 Gasco Guerrero, Antonio María
A1 Muñoz Torre, Raúl
A1 Godos Crespo, Ignacio de
K1 Biogas
K1 Wine lees
K1 Wine
K1 Graphite
K1 Grafito
K1 Magnetite
K1 Phenols
K1 Fenoles
K1 Biomass energy
K1 Energía de biomasa
K1 Anaerobic digestion
K1 Organic wastes - Recycling
K1 Residuos orgánicos -  Reciclaje
K1 Renewable energy resources
K1 Energias renovables
K1 3309.29 Vino
K1 3309 Tecnología de Los Alimentos
K1 2510.91 Recursos Renovables
AB 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.
PB MDPI
SN 2073-4441
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/67224
UL https://uvadoc.uva.es/handle/10324/67224
LA eng
NO Water, 2024, Vol. 16, Nº. 1, 101
NO Producción Científica
DS UVaDOC
RD 12-sep-2024