2026-04-26T20:04:02Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/586802025-02-21T12:35:55Zcom_10324_35294com_10324_952com_10324_894col_10324_35295

Martínez Mendoza, Leonardo José García Depraect, Octavio Muñoz Torre, Raúl 2023-02-16T09:55:04Z 2023-02-16T09:55:04Z 2023 Bioresource Technology, Volume 373, 2023, 128716 0960-8524 https://uvadoc.uva.es/handle/10324/58680 10.1016/j.biortech.2023.128716 128716 Bioresource Technology 373 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. eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ © 2023 The Authors Attribution-NonCommercial-NoDerivatives 4.0 Internacional Unlocking the high-rate continuous performance of fermentative hydrogen bioproduction from fruit and vegetable residues by modulating hydraulic retention time info:eu-repo/semantics/article