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Rodero Raya, María del Rosario Herrero Lobo, Raquel Pérez Martínez, Victor Muñoz Torre, Raúl 2022-05-31T08:33:50Z 2022-05-31T08:33:50Z 2022 Bioresource Technology, 2022, vol. 358, 127398 0960-8524 https://uvadoc.uva.es/handle/10324/53601 10.1016/j.biortech.2022.127398 Producción Científica The application of biogas as a low-priced substrate for the production of ectoines constitutes an opportunity to decrease their production costs and to enhance the viability of anaerobic digestion. The influence of operational conditions on CH4-biogas biodegradation and on ectoines production yields was assessed in continuous pilot bubble column bioreactors. The rise in biomass concentration from 1 to 3 g L-1 resulted in a decrease in the specific ectoine content from 42±8 to 30±4 mgectoine gVSS-1. The concentration of Cu2+ and Mg2+ did not impact process performance, while the use of ammonium as N source resulted in low CH4 biodegradation and ectoine yields (13±7 mgectoine gVSS-1). The increase in CH4 content from 4.5 to 9 %v·v-1 enhanced CH4 removal efficiency. Process operation at NaCl concentrations of 3 %w·w-1 instead of 6 %w·w-1 decreased the ectoine yield to 17 mgectoine gVSS-1. Finally, Methylomicrobium buryatense was identified as the dominant species. Junta de Castilla y León - Fondo Europeo de Desarrollo Regional (projects CLU-2017-09 and UIC-315) application/pdf eng Elsevier info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ © 2022 The Authors Attribution-NonCommercial-NoDerivatives 4.0 Internacional Attribution-NonCommercial-NoDerivatives 4.0 Internacional Biogas Biogás Bioreactors Biorreactores Ectoine Ectoína Hydroxyectoine Hidroxiectoína Influence of operational conditions on the performance of biogas bioconversion into ectoines in pilot bubble column bioreactors info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.sciencedirect.com/science/article/pii/S0960852422007271?via%3Dihub SI