Susanto, Heru and Arafat, Hassan and M.L. Janssen, Elisabeth and Ulbricht, Mathias (2008) Ultrafiltration of polysaccharide-protein mixtures: Elucidation of fouling mechanisms and fouling control by membrane surface modification. Separation and Puriﬁcation Technology, 63 (Issues 3). pp. 558-565. ISSN 1383-5866
|PDF (This wo rk describ es the fouling b ehavior of polysaccharide–protein mixture solutions by inve stigation of adsorptive and ultraﬁltration fouling. Alginate, dextran, myoglobin and bovine serum albumin were use d as model foulants. ) - Published Version |
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This work describes the fouling b ehavior of polysaccharideâprotein mixture solutions by investigation of adsorptive and ultraï¬ltration fouling. Alginate, dextran, myoglobin and bovine serum albumin were used as model foulants. Three commercial poly(ether sulfone) (PES) ultraï¬ltration (UF) membranes with nominal cut-off of 10, 30 and 10 0 kg/mol and a PES-base d thin layer hydrogel composite (TLHC) membrane,synthesize d by photo-initiated graft copolymerization of poly(ethylene glycol) methacrylate (PEGMA) and having a cut-off of 10 kg/mol were used. The effects of pH, foulant concentration, ionic content and pro-portion of protein to polysaccharide in the solution on fouling we re investigated . The results showed that signiï¬cant water ï¬ux reductions and changes in membrane surface property were observed after static adsorption for PES membranes for all feed solution conditions. This water ï¬ux reduction decreased with increasing the pH of the solution. Addition of monovalent ions could either increase or decrease the water ï¬ux reduction. Synergistic effects between polysaccharide and protein with respect to forming a mixed fouling layer with stronger reduction of ï¬ux than for the individual solutes under the same conditions have also been verified for PES UF membranes. UF experiments using a stirred dead-end UF suggested that both reversible and irreversible fouling have contributed to the overall fouling. The antifouling efï¬ciency of the TLHC membrane with respect to both adsorptive and ultrafiltration fouling has been demonstrated for the strong foulant alginate as well as for polysaccharideâprotein mixtures.
|Subjects:||T Technology > TP Chemical technology|
|Divisions:||Faculty of Engineering > Department of Chemical Engineering|
Faculty of Engineering > Department of Chemical Engineering
|Deposited By:||Dr. Heru Susanto|
|Deposited On:||12 Oct 2012 08:48|
|Last Modified:||12 Oct 2012 14:09|
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