RT info:eu-repo/semantics/article
T1 Valorization of CH4 emissions into high-added-value products: Assessing the production of ectoine coupled with CH4 abatement
A1 Cantera Ruiz de Pellón, Sara
A1 Lebrero Fernández, Raquel
A1 Sadornil Delgado, Lidia Jimena
A1 García Encina, Pedro Antonio
A1 Muñoz Torre, Raúl
K1 Gases de efecto invernadero
K1 Metano
AB This study assessed an innovative strategy for the valorization of dilute methane emissions based on the bio-conversion of CH4 (the second most important greenhouse gas (GHG)) into ectoine by the methanotrophic ectoine-producing strain Methylomicrobium alcaliphilum 20 Z. The influence of CH4 (2–20%), Cu2+ (0.05–50 μM) and NaCl (0–9%) concentration as well as temperature (25–35 °C) on ectoine synthesis and specific CH4 biodegradation rate was evaluated for the first time. Concentrations of 20% CH4 (at 3% NaCl, 0.05 μM Cu2+, 25 °C) and 6% NaCl (at 4% CH4, 0.05 μM Cu2+, 25 °C) supported the maximum intra-cellular ectoine production yield (31.0 ±1.7 and 66.9 ±4.2 mg g biomass−1, respectively). On the other hand, extra-cellular ectoine concentrations of up to 4.7 ± 0.1 mg L−1 were detected at high Cu2+concentrations (50 μM), despite this methanotroph has not been previously classified as an ectoine-excreting strain. This research demonstrated the feasibility of the bio-conversion of dilute emissions of methane into high-added value products in an attempt to develop a sustainable GHG bioeconomy.
PB Elsevier
YR 2016
FD 2016
LK http://uvadoc.uva.es/handle/10324/23455
UL http://uvadoc.uva.es/handle/10324/23455
LA eng
NO Journal of Environmental Management, 2016,  Volume 182, p. 160–165
NO Producción Científica
DS UVaDOC
RD 30-abr-2024