Evidencing the chemical degradation of a hydrophilized pes ultrafiltration membrane despite protein fouling
| Autor: | Jean Girard, Murielle Rabiller-Baudry, Aurélie Bouzin, Charlène Hallery, Cindy Leperoux |
|---|---|
| Přispěvatelé: | Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), This study was financially supported by the French ANR program 'Méduse' (project n° ANR-09-BLAN-0055-01).The authors acknowledge Thomas DELHAYE, from University of Rennes 1 (Nanosims Platform) for the SIMS analysis of the pristine membrane.The authors acknowledge Frederic Bon from University of Rennes 1 – IUT Rennes for discussion., ANR-09-BLAN-0055,MéDUSE,Approche Multi-Echelle de la dégradation en conditions d'USagE de membranes polymères de filtration(2009), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
PVP
Ultrafiltration Hypochlorite Filtration and Separation FTIR-ATR Analytical Chemistry chemistry.chemical_compound [CHIM.ANAL]Chemical Sciences/Analytical chemistry medicine [CHIM]Chemical Sciences Chemical decomposition chemistry.chemical_classification Chromatography Polyvinylpyrrolidone Fouling Proteins Polymer Ageing PES Membrane chemistry Chemical engineering Degradation (geology) medicine.drug |
| Zdroj: | Separation and Purification Technology Separation and Purification Technology, Elsevier, 2015, 147, pp.62-81. ⟨10.1016/j.seppur.2015.03.056⟩ Separation and Purification Technology, 2015, 147, pp.62-81. ⟨10.1016/j.seppur.2015.03.056⟩ |
| ISSN: | 1383-5866 |
| DOI: | 10.1016/j.seppur.2015.03.056⟩ |
| Popis: | International audience; Hydrophilisation of polyethersulfone (PES) based membrane is often achieved by addition of polyvinylpyrrolidone (PVP) leading to a physical blend of the two polymers. This paper shows that the most commonly used membrane for UF in dairy industry is a PES/PVP based one. Nevertheless if hydrophilisation limits the organic fouling, PVP is also the Achilles heel of these membranes. It is particularly true when membranes are exposed to hypochlorite as it is the case for cleaning/disinfection steps. Evidencing the disappearance of PVP from a pristine PES/PVP membrane can be easily achieved by FTIR-ATR analyses. But when one wants to study the ageing of a membrane used in UF it gets more complicated: regardless of the cleaning efficiency the membrane always remains fouled by some proteins. As both PVP and proteins own chemical bounds leading to absorption at the same wavenumber in FTIR-ATR, it thereby prevents the easy highlighting of the PVP degradation. The aim of this paper is to propose a simple treatment of raw FTIR-ATR spectra to dissociate these two contributions, allowing consequently the study of the degradation of a fouled membrane. Then the procedure is applied to a real case study on a spiral membrane. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect