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Título
Unlocking the high-rate continuous performance of fermentative hydrogen bioproduction from fruit and vegetable residues by modulating hydraulic retention time
Año del Documento
2023
Editorial
Elsevier
Descripción
Producción Científica
Documento Fuente
Bioresource Technology, Volume 373, 2023, 128716
Abstract
Harnessing fruit-vegetable waste (FVW) as a resource to produce hydrogen via dark fermentation (DF) embraces the circular economy concept. However, there is still a need to upgrade continuous FVW-DF bioprocessing to enhance hydrogen production rates (HPR). This study aims to investigate the influence of the hydraulic retention time (HRT) on the DF of FVW by mixed culture. A stirred tank reactor under continuous mesophilic conditions was operated for 47 days with HRT stepwise reductions from 24 to 6 h, leading to organic loading rates between 47 and 188 g volatile solids (VS)/L-d. The optimum HRT of 9 h resulted in an unprecedented HPR from FVW of 11.8 NL/L-d, with a hydrogen yield of 95.6 NmL/g VS fed. Based on an overarching inspection of hydrogen production in conjunction with organic acids and carbohydrates analyses, it was hypothesized that the high FVW-to-biohydrogen conversion rate achieved was powered by lactate metabolism.
Materias Unesco
3302.02 Tecnología de la Fermentación
Palabras Clave
Biohydrogen
Biorefinery
Fruit-vegetable waste
Dark fermentation
Biohidrógeno
Biorrefinería
Fermentación oscura
Residuos de frutas y verduras
ISSN
0960-8524
Revisión por pares
SI
Patrocinador
European Commission-H2020-MSCA-IF-2019 project UP-GRAD (894515)
Junta de Castilla y Leon - FEDER (program CLU 2017-09, CL-EI-2021-07 & UIC 315)
Junta de Castilla y Leon - FEDER (program CLU 2017-09, CL-EI-2021-07 & UIC 315)
Patrocinador
info:eu-repo/grantAgreement/EC/H2020/894515
Propietario de los Derechos
© 2023 The Authors
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
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