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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 Alonso, Juan CarlosAutoridad UVA Orcid
    Passos, Fabiana
    Lebrero Fernández, RaquelAutoridad UVA Orcid
    Revah, Sergio
    Muñoz Torre, RaúlAutoridad UVA Orcid
    Año del Documento
    2018
    Editorial
    Elsevier
    Descripción
    Producción Científica
    Documento Fuente
    Chemical Engineering Journal, Volume 334, 2018, Pages 691-697
    Resumo
    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
    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
    openAccess
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