RT info:eu-repo/semantics/article
T1 Unlocking the high-rate continuous performance of fermentative hydrogen bioproduction from fruit and vegetable residues by modulating hydraulic retention time
A1 Martínez Mendoza, Leonardo José
A1 García Depraect, Octavio
A1 Muñoz Torre, Raúl
K1 Biohydrogen
K1 Biorefinery
K1 Fruit-vegetable waste
K1 Dark fermentation
K1 Biohidrógeno
K1 Biorrefinería
K1 Fermentación oscura
K1 Residuos de frutas y verduras
K1 3302.02 Tecnología de la Fermentación
AB 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.
PB Elsevier
SN 0960-8524
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/58680
UL https://uvadoc.uva.es/handle/10324/58680
LA eng
NO Bioresource Technology, Volume 373, 2023, 128716
NO Producción Científica
DS UVaDOC
RD 01-jun-2024