title: Uranium removal from water using cellulose triacetate membranes added with activated carbon.
abstract: Ultrafiltration removal of uranium from water, with composite activated carbon cellulose triacetate membranes (AC-CTA), was investigated. The filtrate was provided by uraninite dissolution with pH=6-8. Removal efficiencies were calculated measuring solutions' radioactivities. Membranes were mainly characterized by microscopy analysis, revealing iron after permeation. Uranyl removal was 35±7%. Chemical speciation indicates the presence of (UO(2))(2)CO(3)(OH)(3)(-), UO(2)CO(3), UO(2)(CO(3))(2)(2-) and Fe(2)O(3)(s) as main compounds in the dissolution, suggesting co-adsorption of uranium and iron by the AC during filtration, as the leading rejection path.
authors.affiliation: Centro de Investigación en Materiales Avanzados, Chihuahua, Chih., Mexico.
authors.forename: R
authors.initials: R
authors.lastname: Villalobos-Rodríguez
authors.forename: M E
authors.initials: ME
authors.lastname: Montero-Cabrera
authors.forename: H E
authors.initials: HE
authors.lastname: Esparza-Ponce
authors.forename: E F
authors.initials: EF
authors.lastname: Herrera-Peraza
authors.forename: M L
authors.initials: ML
authors.lastname: Ballinas-Casarrubias