DMHPA乳状液膜富集U(Ⅵ)的动力学研究

摘要: 以磷酸二异辛酯（ＤＭＨＰＡ）为流动载体，对Ｕ（Ⅵ）的乳状液膜传质动力学进行了研究。测定了外相硝酸浓度、膜相载体浓度、温度等因素对传质速率的影响。实验结果表明，该体系在硝酸介质中对Ｕ（Ⅵ）的一次回收率达９６％以上。并求得初始传质速率方程，计算了表观传质反应热。对应用该乳状液膜富集Ｕ（Ⅵ）的适宜条件也进行了讨论

Abstract: STUDY ON TRANSFER KINETICS OF URANIUM () WITH DMHPA BY EMULSION LIQUID MEMBRANEAuthor Han JingtianSun GuoxinBao Borong (Institute of Nuclear Research, the Chinese Academy of Sciences,P.O.Box 800204,Shanghai 201800) Sun Sixiu (Department of Chemistry,Shandong University,Jinan 250100) ABSTRACT The transfer kinetics of uranium () through an emulsion liquid membrane with Di(1methylheptyl) phosphoric acid (DMHPA) as a mobile carrier has been investigated. The experimental results show that more than 96% of the initial U() is recovered. The influence of various factors,such as the concentration of carrier and nitric acid,temperature,on the rate of transfer is studied. The transfer rate equation is experimentally obtained and the superficial transfer energy is calculated. Key words Emulsion liquid membraneDMHPAUranium ()Enrichment