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Fecha
2023-07-24
Derechos de acceso
info:eu-repo/semantics/openAccess
Título de la revista
ISSN de la revista
Título del volumen
Editorial
Elsevier
Citas
Resumen
Livestock manure, traditionally used just as fertilizer, can be energetically valued to produce biogas as an attractive alternative, since nowadays, energy production and its cost stands for a pressing problem around the world. Nevertheless, the presence of lignin in manure hinders the production of methane. This could be improved by pre-treating the manure with ligninolytic fungi, able to break lignin and therefore facilitate the hydrolysis step
for the hydrolytic bacteria, yielding higher volumes of biomethane. Three strategies of incubation with living fungi of genus Pleurotus were evaluated to enhance methane production from livestock manure mixed with bedding material: short term (two weeks 2L container) and long term (two months 400 L container) and 24 h (2 L container) with a crude water extraction of Pleurotus extracellular enzymes. The positive effect of the fungal treatment was observed in the three strategies obtaining an increase in methane production with respect to the control manure of 7% at short term, 111% at long term and 173% (crude enzymatic extract). Consequently, the strategy of using crude enzyme extracts from Pleurotus to improve hydrolysis step as pre-treatment of manure should be considered as a novel, easy, cheap and promising tool to optimize methane production.
Descripción
The registered version of this article, first published in Biomass and Bioenergy, is available online at the publisher's website: Elsevier, https://doi.org/10.1016/j.biombioe.2023.106901
Categorías UNESCO
Palabras clave
Biogas, Cattle manure, Ligninolytic fungi, Anaerobic digestion, Ligninolytic enzymes
Citación
Begoña Mayans, Rafael Antón-Herrero, Carlos García-Delgado, Nely Carreras, Laura Delgado-Moreno, Consuelo Escolástico, Rocío Millán, Enrique Eymar, Enhancement of methane production from livestock manure with pre-treatments based in fungi of genus Pleurotus, Biomass and Bioenergy, Volume 176, 2023, 106901, ISSN 0961-9534, https://doi.org/10.1016/j.biombioe.2023.106901
Centro
Facultad de Ciencias
Departamento
Química Orgánica y Bio-Orgánica