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oai:uvadoc.uva.es:10324/536012025-09-09T09:14:14Zcom_10324_1173com_10324_931com_10324_894col_10324_1371

2022-05-31T08:33:50Z urn:hdl:10324/53601 Influence of operational conditions on the performance of biogas bioconversion into ectoines in pilot bubble column bioreactors Rodero Raya, María del Rosario Herrero Lobo, Raquel Pérez Martínez, Victor Muñoz Torre, Raúl 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. 2022-05-31T08:33:50Z 2022-05-31T08:33:50Z 2022 info:eu-repo/semantics/article Bioresource Technology, 2022, vol. 358, 127398 0960-8524 https://uvadoc.uva.es/handle/10324/53601 10.1016/j.biortech.2022.127398 eng https://www.sciencedirect.com/science/article/pii/S0960852422007271?via%3Dihub 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 Elsevier