RT info:eu-repo/semantics/article
T1 Influence of key operational parameters on biohydrogen production from fruit and vegetable waste via lactate-driven dark fermentation
A1 Martínez Mendoza, Leonardo José
A1 Lebrero Fernández, Raquel
A1 Muñoz Torre, Raúl
A1 García Depraect, Octavio
K1 Dark fermentation
K1 Fermentación oscura
K1 Hydrogen production
K1 Hidrógeno - Producción
AB This study aims at investigating the influence of operational parameters on biohydrogen production from fruit-vegetable waste (FVW) via lactate-driven dark fermentation. Mesophilic batch fermentations were conducted at different pH (5.5, 6.0, 6.5, 7.0, and non-controlled), total solids (TS) contents (5, 7, and 9%) and initial cell biomass concentrations (18, 180, and 1800 mg VSS/L). Higher hydrogen yields and rates were attained with more neutral pH values and low TS concentrations, whereas higher biomass densities enabled higher production rates and avoided wide variations in hydrogen production. A marked lactate accumulation (still at neutral pH) in the fermentation broth was closely associated with hydrogen inhibition. In contrast, enhanced hydrogen productions matched with much lower lactate accumulations (even it was negligible in some fermentations) along with the acetate and butyrate co-production but not with carbohydrates removal. At pH 7, 5% TS, and 1800 mg VSS/L, 49.5 NmL-H2/g VSfed and 976.4 NmL-H2/L-h were attained.
PB Elsevier
SN 0960-8524
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/55778
UL https://uvadoc.uva.es/handle/10324/55778
LA eng
NO Bioresource Technology, 2022, vol. 364, 128070
NO Producción Científica
DS UVaDOC
RD 26-dic-2024