含偕胺肟基功能高分子膜吸附海水中铀的研究  

Absorbing uranium from seawater by an amidoxime groups functional polymeric film

作　　者：卢丹[1] 辛浩波[1] 董辉阳[1] 杨锋[1] 张鑫 

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042 [2]青岛海晶化工有限公司,山东青岛266042

出　　处：《铀矿冶》2009年第4期187-189,198,共4页Uranium Mining and Metallurgy

基　　金：青岛市科技攻关项目(03-2-jz-21)

摘　　要：制备含偕胺肟基功能高分子膜的螯合电极,并对该螯合电极吸附天然海水中铀的性能进行研究。试验结果表明:功能高分子膜静态吸附1 L天然海水中的铀时,8 d达到吸附平衡,平衡时铀质量浓度为0.60μg/L;吸附铀量随着温度升高近线性增大,且温度对吸附速率的影响符合Arrhenius公式:k=0.053 exp(-2.26×104/RT);实验室条件下,每g偕胺肟基功能高分子膜在30 L天然海水中的饱和吸附铀量为5.6 mg。A chelating electrode containing an amidoxime groups functional polymeric film（AFPF） was prepared. Absorbing uranium from seawater by the AFPF was investigated. The experimental results show that the absorption came up to the equilibrium in 1 L seawater by AFPF for 8 days, and the ura- nium concentration at absorption equilibrium was 0.60 /μg/L. The adsorption amount increased rapid- ly with a rise in temperature, and the influence of temperature on the adsorption rate in the seawater conformed to Arrhenius equation：k：0. 053 exp（--2.26 × 10^4/RT）. The saturation adsorption capaci ty of the AFPF was determined as 5.6 mgU/gAFPF in 30 L seawater under laboratory conditions.

关 键 词：偕胺肟基 海水提铀 螯合电极 功能高分子膜 

分 类 号：TQ424.3[化学工程] TQ028.14