Adsorption properties of microfiltration and ultrafiltration membrane filters. -Study on elucidation and characterization of colloid (part 1)

Abstract

    The adsorption properties of microfiltration and ultrafiltration membrane filters (cellulose mixed ester and polysulphone), were studied for uranium and rare earth elements (REE). These elements in a neutral solution showed a considerable amount of adsorption losses on the filters whereas those in a pH3 solution did little. Apparent adsorption coefficient (K) of polysulphone filter is three times larger than that of cellulose filter. Heavy REE shows larger K than light REE. Much attention should be paid to the sampling treatment of environmental water such as washing and preconditioning of filter before sampling. A method for precise determination of K is also presented.