Influence of operational conditions on the performance of biogas bioconversion into ectoines in pilot bubble column bioreactors
| Autor: | Rodero Raya, María del Rosario, Herrero Lobo, Raquel, Pérez, Víctor, Muñoz Torre, Raúl |
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| Rok vydání: | 2022 |
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| Zdroj: | UVaDOC. Repositorio Documental de la Universidad de Valladolid instname |
| Popis: | 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) |
| Databáze: | OpenAIRE |
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