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Concentration of gelatin solution with polyethersulfone ultrafiltration membranes

Concentration of gelatin solution with polyethersulfone ultrafiltration membranes,10.1016/j.fbp.2010.06.004,Food and Bioproducts Processing,Yanping Wa

Concentration of gelatin solution with polyethersulfone ultrafiltration membranes   (Citations: 2)
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In this work, polyethersulfone (PES) flat sheet ultrafiltration (UF) membranes were prepared by immersion precipitation phase inversion process with polyvinylpyrrolidone (PVP 30K) and acetone as additives. The best preparation condition for PES membranes with high water flux and rejection (to BSA) was decided. It was found that the optimal composition of the polymer casting solution was: 16wt% (PES), 2wt% (PVP 30K), and 1wt% (acetone). Pure water flux of the membrane prepared at this condition reached to 373L/m2h at 0.1MPa, and the rejection to BSA was 91%. Compared with other reports, the rejection was slightly low but the flux of the PES membrane was high. When the membrane was used to concentrate gelatin solutions, the rejection value was over 75%. It was found that increasing the feed temperature and transmembrane pressure enhanced the permeation flux, but the rejection decreased slightly. However, increasing the cross-flow velocity of the feed solution simultaneously increased both the permeation flux and the rejection.
Journal: Food and Bioproducts Processing - FOOD BIOPROD PROCESS , vol. 89, no. 3, pp. 163-169, 2011
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