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Por favor, use este identificador para citar o enlazar este ítem: http://uvadoc.uva.es/handle/10324/30104
Título: Simultaneous methane abatement and PHB production by Methylocystis hirsuta in a novel gas-recycling bubble column bioreactor
Autor: García Pérez, Teresa
López, Juan Carlos
Passos, Fabiana
Lebrero Fernández, Raquel
Revah, Sergio
Muñoz Torre, Raúl
Año del Documento: 2018
Editorial: Elsevier
Descripción: Producción Científica
Documento Fuente: Chemical Engineering Journal, Volume 334, 2018, Pages 691-697
Resumen: The limited gas–liquid mass transfer represents the main challenge in the operation of cost-effective bioreactors devoted to the treatment of poorly soluble gas pollutants such as methane (CH4). This study evaluates the influence of internal gas-recycling strategies on the enhancement of CH4 abatement in a bubble column bioreactor inoculated with the methanotroph Methylocystis hirsuta. Maximum CH4 removal efficiencies of 72.9 ± 0.5% (corresponding to elimination capacities of 35.2 ± 0.4 g m−3 h−1) were recorded under process operation at an empty bed residence time of 30 min and 0.50 m3gas m−3reactor min−1 of internal gas-recycling rate. The accumulation of poly-3-hydroxybutyrate (PHB) in M. hirsuta was evaluated batchwise under limitations of potassium, manganese, nitrogen, and nitrogen with excess of iron. Nitrogen starvation resulted in the highest PHB content (28 ± 1%). Likewise, the implementation of sequential N starvation cycles in a continuous bubble column reactor operated at a gas residence time of 30 min and an internal gas-recycling rate of 0.50 m3gas m−3reactor min−1 supported a PHB content of up to 34.6 ± 2.5%, with a volumetric PHB productivity of 1.4 ± 0.4 kg m−3 d−1 and elimination capacities of 16.2 ± 9.5 g m−3 h−1.
Palabras Clave: Tratamiento biológico de gases
Gases de efecto invernadero
Biological gas treatment
Greenhouse gas
ISSN: 1385-8947
Revisión por Pares: SI
DOI: https://doi.org/10.1016/j.cej.2017.10.106
Patrocinador: Ministerio de Economía, Industria y Competitividad (Proyect CTM2015-7044 -R and Red NOVEDAR)
Junta de Castilla y León (UIC71)
Version del Editor: https://www.sciencedirect.com/science/article/pii/S1385894717318211
Idioma: eng
URI: http://uvadoc.uva.es/handle/10324/30104
Derechos: info:eu-repo/semantics/openAccess
Embargado hasta2019-12-12
Aparece en las colecciones:DEP48 - Artículos de revista

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