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    Por favor, use este identificador para citar o enlazar este ítem:https://uvadoc.uva.es/handle/10324/76960

    Título
    Optimizing the composition of bioactive coatings to support toluene removal
    Autor
    González Martín, JavierAutoridad UVA Orcid
    Campo, Aránzazu del
    Muñoz Torre, RaúlAutoridad UVA Orcid
    Lebrero Fernández, RaquelAutoridad UVA Orcid
    Año del Documento
    2025
    Editorial
    Elsevier
    Descripción
    Producción Científica
    Documento Fuente
    Journal of Environmental Chemical Engineering, 2025, vol. 13, n. 4, p. 117324
    Resumen
    The potential of bioactive coatings as an innovative biotechnology to overcome the mass-transfer limitations of conventional technologies when treating air pollutants, especially hydrophobic volatile organic compounds, was herein assessed. Bioactive coatings consist of active microorganisms entrapped in a polymer matrix, which needs to be porous to facilitate an effective gas pollutant exchange. To increase porosity, two additives, sucrose and glycerol mixtures (Suc/Gly) and halloysite nanotubes (HNTs), were included in the bioactive coatings at two concentration levels. The toluene removals of the different bioactive coatings were studied in batch mode at low (∼300 mg m−3) and high (∼3000 mg m−3) toluene concentrations. Overall, low HNTs concentration coatings supported optimum toluene removals (>95 %), comparable to biofilm controls at both toluene concentrations. High HNTs concentration coatings and low Suc/Gly concentration coatings achieved toluene removals over 95 % after 7 toluene injections at low toluene concentration. At high toluene concentrations, these coatings eventually outperformed the biofilm controls. High Suc/Gly concentration coatings supported a limited toluene removal (4 and 1 injection at low and high toluene concentrations, respectively), attributed to a preferential consumption of sucrose over toluene. These findings were corroborated by ESEM/conventional SEM imaging, revealing porosity in the HNTs bioactive coatings, visible at both the surface and internal levels. On the contrary, more homogeneous surfaces were observed in the Suc/Gly bioactive coatings, where total polymer coalescence was partially hindered by the addition of Suc/Gly. These results paved the way towards the implementation of bioactive coating in larger bioreactors for real-life air purification.
    Materias Unesco
    3302 Tecnología Bioquímica
    ISSN
    2213-3437
    Revisión por pares
    SI
    DOI
    10.1016/j.jece.2025.117324
    Patrocinador
    Ministerio de Ciencia, Innovación y Universidades [proyecto RTI2018–0–096441-B-I00]
    Junta de Castilla y León y al programa FEDER de la UE [UIC 393, UIC 379]
    Junta de Castilla y León (Consejería de Educación) y del Fondo Social Europeo (BDNS 487971)
    Version del Editor
    https://www.sciencedirect.com/science/article/pii/S2213343725020202
    Propietario de los Derechos
    © 2025 The Author(s)
    Idioma
    eng
    URI
    https://uvadoc.uva.es/handle/10324/76960
    Tipo de versión
    info:eu-repo/semantics/publishedVersion
    Derechos
    openAccess
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    Attribution-NonCommercial-NoDerivatives 4.0 InternacionalLa licencia del ítem se describe como Attribution-NonCommercial-NoDerivatives 4.0 Internacional

    Universidad de Valladolid

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