RT info:eu-repo/semantics/article
T1 Ectoines production from biogas in pilot bubble column bioreactors and their subsequent extraction via bio-milking
A1 Rodero Raya, María del Rosario
A1 Carmona Martínez, Alessandro A.
A1 Martínez Fraile, Cristina
A1 Herrero Lobo, Raquel
A1 Rodríguez Rodríguez, Elisa
A1 García Encina, Pedro Antonio
A1 Peña Miranda, María del Mar Agripina
A1 Muñoz Torre, Raúl
K1 Medio ambiente, Ingeniería del
K1 Renewable and Green Energy
K1 Ectoine
K1 Biogas valorization
K1 Methanotrophs
K1 Ectoína
K1 Valorización de biogás
K1 Metanotrofos
K1 3308 Ingeniería y Tecnología del Medio Ambiente
AB Despite the potential of biogas from waste/wastewater treatment as a renewable energy source, the presence of pollutants and the rapid decrease in the levelized cost of solar and wind power constrain the use of biogas for energy generation. Biogas conversion into ectoine, one of the most valuable bioproducts (1000 €/kg), constitutes a new strategy to promote a competitive biogas market. The potential for a stand-alone 20 L bubble column bioreactor operating at 6% NaCl and two 10 L interconnected bioreactors (at 0 and 6% NaCl, respectively) for ectoine production from biogas was comparatively assessed. The stand-alone reactor supported the best process performance due to its highest robustness and efficiency for ectoine accumulation (20–52 mgectoine/gVSS) and CH4 degradation (up to 84%). The increase in N availability and internal gas recirculation did not enhance ectoine synthesis. However, a 2-fold increase in the internal gas recirculation resulted in an approximately 1.3-fold increase in CH4 removal efficiency. Finally, the recovery of ectoine through bacterial bio-milking resulted in efficiencies of >70% without any negative impact of methanotrophic cell recycling to the bioreactors on CH4 biodegradation or ectoine synthesis.
PB Elsevier
SN 0043-1354
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/62510
UL https://uvadoc.uva.es/handle/10324/62510
LA eng
NO Water Research, 2023, vol. 245, 120665
NO Producción Científica
DS UVaDOC
RD 05-jun-2024