Article ID Journal Published Year Pages File Type
10374617 Colloids and Surfaces A: Physicochemical and Engineering Aspects 2005 5 Pages PDF
Abstract
The sorption of UO22+ on gibbsite was determined at differing experimental conditions. The effects of contact time between the solid phase and aqueous solution, pH, ionic strength (background electrolyte KNO3), concentration of UO22+ and anion of electrolyte (KH2PO4 or KCl) were investigated. The sorption was rapidly increased in the first 30 h, then remained constant in the period 30-50 h and was slightly decreased after 50 h. It was found that the sorption is abruptly increased with increasing pH in the range 3-6; is slightly decreased with increasing ionic strength from 0.01 to 0.1 mol/L KNO3 solutions; that the sorption remains, respectively, constant at pH = 3, 4 and 5 in the concentration range of UO22+ 1.5 × 10−4 to 5 × 10−4 mol/L and enhanced at pH < 6 in the presence of 0.001 mol/L KH2PO4 and reduced at pH range 2-9 in the presence of 0.001 mol/L KCl.
Related Topics
Physical Sciences and Engineering Chemical Engineering Colloid and Surface Chemistry
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