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    Por favor, use este identificador para citar o enlazar este ítem:https://uvadoc.uva.es/handle/10324/63023

    Título
    Indoor air VOCs biofiltration by bioactive coating packed bed bioreactors
    Autor
    González Martín, JavierAutoridad UVA Orcid
    Sendino Cantera, Sara
    Muñoz Torre, RaúlAutoridad UVA Orcid
    Lebrero Fernández, RaquelAutoridad UVA Orcid
    Año del Documento
    2024
    Editorial
    Elsevier
    Descripción
    Producción Científica
    Documento Fuente
    Journal of Environmental Management, 2024, vol. 349, 119362
    Resumen
    Bioactive coatings are envisaged as a promising biotechnology to tackle the emerging problem of indoor air pollution. This solution could cope with the low concentrations, the wide range of compounds and the hydrophobicity of some indoor air VOCs, which are the most important bottlenecks regarding the implementation of conventional biotechnologies for indoor air treatment. A bioactive coating-based bioreactor was tested in this study for the abatement of different VOCs (n-hexane, toluene and α-pinene) at different empty bed residence times (EBRT) and inlet VOC concentrations. The performance of this reactor was compared with a conventional biofilm-based bioreactor operated with the same microbial inoculum. After an acclimation period, the bioactive coating-based bioreactor achieved abatements of over 50% for hexane, 80% for toluene and 70% for pinene at EBRTs of 112–56 s and inlet concentrations of 9–15 mg m−3. These results were about 25, 10 and 20% lower than the highest removals recorded in the biofilm-based bioreactor. Both bioreactors experienced a decrease in VOC abatement by ∼25% for hexane, 45% for toluene and 40% for pinene, after reducing the EBRT to 28 s. When inlet VOC concentrations were progressively reduced, VOC abatement efficiencies did not improve. This fact suggested that low EBRTs and low inlet VOCs concentration hindered indoor air pollutant abatement as a result of a limited mass transfer and bioavailability. Metagenomic analyses showed that process operation with toluene, hexane and pinene as the only carbon and energy sources favored an enriched bacterial community represented by the genera Devosia, Mesorhizobium, Sphingobacterium and Mycobacterium, regardless of the bioreactor configuration. Bioactive coatings were used in this work as packing material of a conventional bioreactor, achieving satisfactory VOC abatement similar to a conventional bioreactor.
    Materias (normalizadas)
    Biotecnología
    Air pollution
    Materias Unesco
    3308 Ingeniería y Tecnología del Medio Ambiente
    Palabras Clave
    Bioactive coating
    Indoor air
    Biofiltration
    Recubrimiento bioactivo
    Aire interior
    Biofiltración
    ISSN
    0301-4797
    Revisión por pares
    SI
    DOI
    10.1016/j.jenvman.2023.119362
    Patrocinador
    Ministerio de Ciencia e Innovación y Ministerio de Universidades [project RTI2018-0-096441-B-I00]
    Junta de Castilla y León - EU-FEDER [grant number CLU 2017–09, CL-EI-2021-07 y UIC 315]
    Junta de Castilla y León y Fondo Social Europeo (PhD grant BDNS 487971)
    Comisión Europea-H2020-MSCA–IF–2019 (ENHANCEMENT, ref. 897284)
    Version del Editor
    https://www.sciencedirect.com/science/article/pii/S0301479723021503?via%3Dihub
    Propietario de los Derechos
    © 2023 The Authors
    Idioma
    eng
    URI
    https://uvadoc.uva.es/handle/10324/63023
    Tipo de versión
    info:eu-repo/semantics/publishedVersion
    Derechos
    openAccess
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    Universidad de Valladolid

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