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    Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10259/8278

    Título
    Comparison of external and submerged membranes used in anaerobic membrane bioreactors: Fouling related issues and biological activity
    Autor
    Martínez Díaz, Raquel
    Ruiz Pérez, María OlgaAutoridad UBU Orcid
    Ramos Rodríguez, CiprianoAutoridad UBU Orcid
    Cámara Nebreda, José MaríaAutoridad UBU Orcid
    Diez Blanco, VictorinoAutoridad UBU Orcid
    Publicado en
    Biochemical Engineering Journal. 2020, V. 159, 107558
    Editorial
    Elsevier
    Fecha de publicación
    2020-07
    ISSN
    1369-703X
    DOI
    10.1016/j.bej.2020.107558
    Resumo
    Anaerobic sludge filtration tests were performed with two experimental set-ups equipped with either submerged hollow-fiber membranes or external tubular membranes operated with low crossflow velocity and gas sparging in a gas-lift mode. Particle size distributions, extracellular polymeric substance concentrations, methanogenic activity, reversible and irreversible fouling rates, and chemical cleaning efficiency were all studied and compared. An increase in the percentage of smaller particles and a decrease in the concentration of volatile suspended solids in the external membrane set-up were observed. Both soluble protein and soluble polysaccharide concentrations were also higher in the external filtration. Operating at 12–15 L/m2 h for 7 days, the total resistance of the external membrane reached 9.3 × 1012 m−1, while the resistance of submerged membrane reached 1.1 × 1012 m−1 despite operating at 15–25 L/m2 h for 12 days. Finally, the type of fouling and the efficiency of chemical cleaning also differed in both configurations.
    Palabras clave
    Submerged filtration
    External filtration
    Anaerobic membrane bioreactor
    Gas-lift mode
    Shear stress
    Fouling rate
    Materia
    Ingeniería química
    Chemical engineering
    Bioquímica
    Biochemistry
    URI
    http://hdl.handle.net/10259/8278
    Versión del editor
    https://doi.org/10.1016/j.bej.2020.107558
    Aparece en las colecciones
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    Attribution-NonCommercial-NoDerivatives 4.0 Internacional
    Documento(s) sujeto(s) a una licencia Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internacional
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