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Título
Energy integration of thermal pretreatment in anaerobic digestion of wheat straw
Autor
Año del Documento
2024
Editorial
MDPI
Descripción
Producción Científica
Documento Fuente
Energies, 2024, Vol. 17, Nº. 9, 2030
Abstract
Cereal straw stands out as one of the most abundant and globally distributed agricultural residues. Traditional applications cope with a limited amount of production, leaving the remainder in the field for natural decomposition. Managing cereal straw through controlled biological transformation under anaerobic conditions holds the potential to generate added value in the form of bioenergy. However, the lignocellulosic composition of these substrates poses challenges for organic degradation, often requiring energy-intensive pretreatments. A detailed study with a comprehensive calculation of the overall energy balance of the integrated process is proposed, aiming to provide real added value and replicability. Three scenarios for wheat straw transformation were investigated, incorporating two preliminary pre-treatment stages—mechanical milling and physicochemical steam explosion. Three conditions of pretreatment were essayed, varying the time exposure of the steam explosion. The subsequent energy integration analysis revealed that the process was optimized by up to 15% in the final energy balance when the steam explosion was set to 10 min. The macromolecular composition determination revealed that the thermal pretreatment reduced the lag phase of the hydrolysis step through hemicellulose breakdown.
Materias (normalizadas)
Anaerobic digestion
Residuos orgánicos - Reciclaje
Biogas
Trigo
Biomasa
Biotechnology
Biotecnología
Renewable energy resources
Energias renovables
Energy systems
Steam explosion
Sustainable agriculture
Agricultura sostenible
Materias Unesco
3303 Ingeniería y Tecnología Químicas
3308 Ingeniería y Tecnología del Medio Ambiente
33 Ciencias Tecnológicas
3322.02 Generación de Energía
ISSN
1996-1073
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
© 2024 The authors
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
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