卵白アルブミン吸着の限外濾過膜性能に及ぼす影響

概要

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In order to explain adsorption phenomenon of macromolecular solutes on ultrafiltration membranes, change of pure water permeability and rejection ability caused by ovalbumin adsorption was measured. Three different kinds of ultrafiltration membranes, that is polysulfone (PS), polyolefine (PO) and polyacrylonitrile (PAN) membranes, were employed. Four PAN membranes having different molecular weight cut-off were also used. It was founded that values of pure water permeate flux decreased only by soaking the membranes in an ovalbumin solution. Soaking in higher concentration solutions caused smaller pure water flux for the all membranes studied, and the decrease in the flux was much larger for the PAN membrane than for other two. Among four PAN membranes, the flux largely decreased by ovalbumin adsorption for the membrane having smaller molecular weight cut-off. Resistance for pure water flux caused by adsorption was classified into two resistances, that is resistances by adsorption on the surface and in the pore of a membrane. These two types of adsorption increased rejection ability of ultrafiltration membranes.
日本膜学会の論文