• español
  • English
  • français
  • Deutsch
  • português (Brasil)
  • italiano
    • español
    • English
    • français
    • Deutsch
    • português (Brasil)
    • italiano
    • español
    • English
    • français
    • Deutsch
    • português (Brasil)
    • italiano
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Navegar

    Todo o repositórioComunidadesPor data do documentoAutoresAssuntosTítulos

    Minha conta

    Entrar

    Estatística

    Ver as estatísticas de uso

    Compartir

    Ver item 
    •   Página inicial
    • PRODUÇÃO CIENTÍFICA
    • Departamentos
    • Dpto. Física Aplicada
    • DEP31 - Artículos de revista
    • Ver item
    •   Página inicial
    • PRODUÇÃO CIENTÍFICA
    • Departamentos
    • Dpto. Física Aplicada
    • DEP31 - Artículos de revista
    • Ver item
    • español
    • English
    • français
    • Deutsch
    • português (Brasil)
    • italiano

    Exportar

    RISMendeleyRefworksZotero
    • edm
    • marc
    • xoai
    • qdc
    • ore
    • ese
    • dim
    • uketd_dc
    • oai_dc
    • etdms
    • rdf
    • mods
    • mets
    • didl
    • premis

    Citas

    Por favor, use este identificador para citar o enlazar este ítem:http://uvadoc.uva.es/handle/10324/21892

    Título
    Flux Kinetics, Limit and Critical F 1 luxes for Low Pressure Dead-end Microfiltration. 2 The case of BSA Filtration through a Positively Charged Membrane
    Autor
    Velasco, Carmen
    Calvo Díez, José IgnacioAutoridad UVA Orcid
    Palacio Martínez, LauraAutoridad UVA Orcid
    Carmona Del Rio, Francisco JavierAutoridad UVA Orcid
    Prádanos del Pico, Pedro LourdesAutoridad UVA Orcid
    Hernández Giménez, AntonioAutoridad UVA Orcid
    Año del Documento
    2015
    Editorial
    Elsevier
    Descripción
    Producción Científica
    Documento Fuente
    Chemical Engineering Science 2015, Volume 129, p. 58–68
    Resumo
    The influence of the applied pressure on the flux decay mechanism during Bovine Serum Albumin (BSA) dead-end microfiltration (MF) has been investigated for a polyethersulfone, positively charged, membrane (SB-6407) from Pall®11 . BSA solutions, at pH values of 4, 5 (very close to the protein isoelectric point, IEP) and 6, were micro-filtered through the membrane at different low applied transmembrane pressures. Although filtration was done in dead-end configuration, limit fluxes appeared for all pressures and pH values studied. The concepts of (long time) limit and critical fluxes and their correlation have been clarified and analysed too. The usual blocking filtration laws have been included in a common frame and both the cases with zero or non-zero limit fluxes have been incorporated. Within this frame, the standard model, that assumes an internal pore deposition, has been included as well; although, in our case, the acting mechanism seems to be mainly the so called complete blocking. Protein adsorption has been analysed in terms of the protein-protein and protein-membrane electrostatic interactions. There is a faster flux-decay for the protein isoelectric point with a slightly slower decline in flux when there are both membrane-to-protein and protein-protein repulsion. The slowest kinetics appears for membrane-to-protein attraction with protein-protein repulsion. Moreover, adsorption is stronger, and the limit flux smaller, when the protein is attracted towards the membrane and there is protein-protein repulsion.
    Materias (normalizadas)
    Proteins
    Dead-end microfiltration
    Flux decaykinetics
    Limit andcritical fluxes
    Adsorption
    ISSN
    0376-7388
    Revisión por pares
    SI
    DOI
    10.1016/j.ces.2015.02.003
    Patrocinador
    Junta de Castilla y León (programa de apoyo a proyectos de investigación – Ref. VA302U13)
    Version del Editor
    https://www.journals.elsevier.com/journal-of-membrane-science/
    Idioma
    eng
    URI
    http://uvadoc.uva.es/handle/10324/21892
    Derechos
    openAccess
    Aparece en las colecciones
    • DEP31 - Artículos de revista [166]
    Mostrar registro completo
    Arquivos deste item
    Nombre:
    PREV-12-Chem-Eng-Sci-129-58-68-2015.pdf
    Tamaño:
    1.178Mb
    Formato:
    Adobe PDF
    Thumbnail
    Visualizar/Abrir
    Attribution-NonCommercial-NoDerivatives 4.0 InternationalExceto quando indicado o contrário, a licença deste item é descrito como Attribution-NonCommercial-NoDerivatives 4.0 International

    Universidad de Valladolid

    Powered by MIT's. DSpace software, Version 5.10