RT info:eu-repo/semantics/article
T1 Continuous lactate-driven dark fermentation of restaurant food waste: Process characterization and new insights on transient feast/famine perturbations
A1 Regueira Marcos, Lois
A1 Muñoz Torre, Raúl
A1 García Depraect, Octavio
K1 Fermentación
K1 Medio ambiente, Ingeniería del
K1 Acidogenic fermentation
K1 Biogenic hydrogen
K1 Organic waste
K1 Fermentación acidógena
K1 Hidrógeno biogénico
K1 Residuo orgánico
K1 3308 Ingeniería y Tecnología del Medio Ambiente
AB The effect of hydraulic retention time (HRT) on the continuous lactate-driven dark fermentation (LD-DF) of food waste (FW) was investigated. The robustness of the bioprocess against feast/famine perturbations was also explored. The stepwise HRT decrease from 24 to 16 and 12 h in a continuously stirred tank fermenter fed with simulated restaurant FW impacted on hydrogen production rate (HPR). The optimal HRT of 16 h supported a HPR of 4.2 L H2/L-d. Feast/famine perturbations caused by 12-h feeding interruptions led to a remarkable peak in HPR up to 19.2 L H2/L-d, albeit the process became stable at 4.3 L H2/L-d following perturbation. The occurrence of LD-DF throughout the operation was endorsed by metabolites analysis. Particularly, hydrogen production positively correlated with lactate consumption and butyrate production. Overall, the FW LD-DF process was highly sensitive but resilient against transient feast/famine perturbations, supporting high-rate HPRs under optimal HRTs.
PB Elsevier
SN 0960-8524
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/59972
UL https://uvadoc.uva.es/handle/10324/59972
LA eng
NO Bioresource Technology, 2023, vol. 385, 129385
NO Producción Científica
DS UVaDOC
RD 15-jun-2024