Articles producció científica> Enginyeria Química

Hydraulic resistance and protein fouling resistance of a zirconia membrane with a tethered PVP layer

  • Identification data

    Identifier: imarina:9187295
    Authors:
    Chen YRovira-Bru MGiralt FCohen Y
    Abstract:
    The influence of surface modification of zirconia (ZrO2) membrane with tethered poly(vinyl pyrrolidone) (PVP) chains was evaluated with respect to the impact of pH and ionic strength on hydraulic resistance and fouling resistance in the filtration of bovine serum albumin (BSA) and lysozyme (Lys) as model protein foulants. The tethered PVP surface layer led to membrane permeability and fouling propensity that were responsive to both pH and ionic strength. The PVPmodified membrane (PVP-ZrO2) hydraulic resistance increased by up to ~48% over a pH range of 6-11, but with no discernible impact at lower pH. Membrane hydraulic resistance was virtually unaffected by ionic strength over the 0.001-1 M range. However, reversible foulant cake resistance in BSA and Lys solution filtration increased with elevated ionic strength, owing in part to the weakening of protein-protein repulsion. Irreversible BSA and Lys fouling was affected by the operational pH relative to the protein isoelectric point (IEP) and reduced under conditions of chain swelling. Irreversible membrane fouling resistance for both proteins was significantly lower, by ~11-49% and 18-74%, respectively, for the PVP-ZrO2 membrane relative to the unmodified ZrO2 membrane. The present results suggest the merit of further exploration of fouling reduction and improvement of membrane cleaning effectiveness via tuning pH and ionic strength triggered conformational responsiveness of the tethered target polymer layer.
  • Others:

    Author, as appears in the article.: Chen Y; Rovira-Bru M; Giralt F; Cohen Y
    Department: Enginyeria Química
    e-ISSN: 2073-4441
    URV's Author/s: Giralt Prat, Francesc d'Assís
    Keywords: Ultrafiltration Pvp brush layer Protein fouling Membrane cleaning Lys Irreversible fouling resistance Graft polymerization Ceramic membrane Cake layer resistance Bsa
    Abstract: The influence of surface modification of zirconia (ZrO2) membrane with tethered poly(vinyl pyrrolidone) (PVP) chains was evaluated with respect to the impact of pH and ionic strength on hydraulic resistance and fouling resistance in the filtration of bovine serum albumin (BSA) and lysozyme (Lys) as model protein foulants. The tethered PVP surface layer led to membrane permeability and fouling propensity that were responsive to both pH and ionic strength. The PVPmodified membrane (PVP-ZrO2) hydraulic resistance increased by up to ~48% over a pH range of 6-11, but with no discernible impact at lower pH. Membrane hydraulic resistance was virtually unaffected by ionic strength over the 0.001-1 M range. However, reversible foulant cake resistance in BSA and Lys solution filtration increased with elevated ionic strength, owing in part to the weakening of protein-protein repulsion. Irreversible BSA and Lys fouling was affected by the operational pH relative to the protein isoelectric point (IEP) and reduced under conditions of chain swelling. Irreversible membrane fouling resistance for both proteins was significantly lower, by ~11-49% and 18-74%, respectively, for the PVP-ZrO2 membrane relative to the unmodified ZrO2 membrane. The present results suggest the merit of further exploration of fouling reduction and improvement of membrane cleaning effectiveness via tuning pH and ionic strength triggered conformational responsiveness of the tethered target polymer layer.
    Thematic Areas: Water science and technology Water resources Interdisciplinar Geography, planning and development Geografía Geociências Fluid flow and transfer processes Environmental sciences Engenharias iii Engenharias i Ciencias sociales Ciências ambientais Ciências agrárias i Biochemistry Aquatic science
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: fgiralt@urv.cat
    Record's date: 2024-07-27
    Journal volume: 13
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://www.mdpi.com/2073-4441/13/7/951
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Water. 13 (7):
    APA: Chen Y; Rovira-Bru M; Giralt F; Cohen Y (2021). Hydraulic resistance and protein fouling resistance of a zirconia membrane with a tethered PVP layer. Water, 13(7), -. DOI: 10.3390/w13070951
    Article's DOI: 10.3390/w13070951
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2021
    Publication Type: Journal Publications
  • Keywords:

    Aquatic Science,Biochemistry,Environmental Sciences,Fluid Flow and Transfer Processes,Geography, Planning and Development,Water Resources,Water Science and Technology
    Ultrafiltration
    Pvp brush layer
    Protein fouling
    Membrane cleaning
    Lys
    Irreversible fouling resistance
    Graft polymerization
    Ceramic membrane
    Cake layer resistance
    Bsa
    Water science and technology
    Water resources
    Interdisciplinar
    Geography, planning and development
    Geografía
    Geociências
    Fluid flow and transfer processes
    Environmental sciences
    Engenharias iii
    Engenharias i
    Ciencias sociales
    Ciências ambientais
    Ciências agrárias i
    Biochemistry
    Aquatic science
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