RT Journal Article T1 Turning fish canning wastewater into resources: Effluents and operational conditions selection for volatile fatty acids production A1 Casero-Díaz, Tamara A1 Castro-Barros, Celia A1 Taboada-Santos, Antón A1 Rodríguez-Hernández, Leticia A1 Mauricio Iglesias, Miguel A1 Carballa Arcos, Marta K1 Anaerobic fermentation K1 Carboxylate platform K1 Industrial wastewater K1 Resource recovery K1 VFA AB The potential of three fish canning wastewaters to produce volatile fatty acids (VFA) was evaluated using a stepwise procedure at laboratory scale. Batch tests (0.5 L), at different food to microorganism ratios (F/M), presented tuna and mussel cooking wastewaters as the highest yield substrates (60 % and 80 %, respectively). F/M ratios tested did not significantly influence the yield or the VFA spectrum. Continuous reactors (5 L) were operated with these two wastewaters at different hydraulic retention times (HRT). The shortest HRT studied (2 d) favoured the yield and the production of longer-chain VFA (butyric and valeric acids) in tuna wastewater. However, for mussel wastewater, the yield decreased 2-fold and the production of short-chain VFA (acetic acid) was favoured. This study offers an overview of the best fish canning wastewater, from a point of view of maximum VFA yield, and its optimal operational conditions for VFA production. PB Elsevier SN 2214-7144 YR 2024 FD 2024-07 LK https://hdl.handle.net/10347/38146 UL https://hdl.handle.net/10347/38146 LA eng NO Casero-Díaz, T., Castro-Barros, C., Taboada-Santos, A., Rodríguez-Hernández, L., Mauricio-Iglesias, M., Carballa, M. (2024). Turning fish canning wastewater into resources: Effluents and operational conditions selection for volatile fatty acids production. “Journal of Water Process Engineering”, vol. 64. https://doi.org/10.1016/j.jwpe.2024.105738 NO The authors appreciate the support of the projects BioCenPlas from Ministry of Agriculture, Fisheries and Food (Government of Spain) and Unidad Mixta CIGAT CIRCULAR (IN853C2022/03) from Axencia Galega de Innovación (GAIN) (Xunta de Galicia). MMI and MC belong to a Galician Competitive Research Group (ED431C-2021/37). Special thanks to the three fish canneries that contributed with wastewater. DS Minerva RD 23 abr 2026