Valorization of CH 4 emissions into high-added-value products: Assessing the production of ectoine coupled with CH 4 abatement
| Autor: | Pedro A. García-Encina, Raquel Lebrero, Sara Cantera, Lidia J. Sadornil, Raúl Muñoz |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
0301 basic medicine Methane emissions Environmental Engineering Methanotroph Gases de efecto invernadero Management Monitoring Policy and Law Ectoine Greenhouse gas 01 natural sciences Methane 03 medical and health sciences chemistry.chemical_compound Bioreactors 010608 biotechnology Humans Waste Management and Disposal Air Pollutants Methane biorefinery Chemistry Temperature Environmental engineering Amino Acids Diamino General Medicine Biodegradation Methane treatment Metano Biodegradation Environmental 030104 developmental biology Yield (chemistry) Environmental chemistry Ectoine synthesis |
| Zdroj: | UVaDOC. Repositorio Documental de la Universidad de Valladolid instname Journal of Environmental Management 182 (2016) Journal of Environmental Management, 182, 160-165 |
| ISSN: | 0301-4797 |
| DOI: | 10.1016/j.jenvman.2016.07.064 |
| Popis: | Producción Científica 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. Ministerio de Economía, Industria y Competitividad (Proyect CTM2015-70442-R) |
| Databáze: | OpenAIRE |
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