Continuous lactate-driven dark fermentation of restaurant food waste: Process characterization and new insights on transient feast/famine perturbations
| Autor: | Regueira Marcos, Lois, Muñoz Torre, Raúl, García Depraect, Octavio |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
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| DOI: | 10.1016/j.biortech.2023.129385 |
| Popis: | Producción Científica 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. European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 894515 MCIN/AEI /10.13039/501100011033 - Unión Europea NextGenerationEU/PRTR (Grant RYC2021‐034559‐I) Junta de Castilla y León - EU-FEDER (CLU 2017-09, CL-EI-2021-07 y UIC 315) |
| Databáze: | OpenAIRE |
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