中空纤维膜器中乳化液膜体系提取In(Ⅲ)的工艺优化  

Extraction process optimization for In(Ⅲ) in hollow fiber contactor by emulsion liquid membrane system

作　　者：赖洁[1] 阮恒 龚福忠[1] 周立亚[1] 廖孙启[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004 [2]广西区化工研究院,广西南宁530001

出　　处：《广西大学学报（自然科学版）》2012年第6期1121-1125,共5页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(20966001)

摘　　要：为了优化中空纤维膜器中乳化液膜体系OP-4/P204/液体石蜡/煤油/盐酸提取铟的工艺条件,通过正交试验对OP-4浓度、P204浓度及皂化度、液体石蜡浓度、内相盐酸浓度、料液相pH等影响因素进行了考查,优化了液膜体系配方及工艺。结果表明,P204皂化度是提取铟的主要影响因素,In3+的内相富集浓度随P204皂化度增大而显著提高;液体石蜡浓度、OP-4浓度、料液pH对提取效果也有较大影响;在2～6 mol/L浓度范围内,内相盐酸浓度对提取效果的影响不显著。在优化后的工艺条件下,用于含In3+、Fe3+、Cu2+的铟浸出液中提取铟时,经二次循环提取,In3+的提取率达到93.6%,Fe3+和Cu2+的提取率分别为26.8%和26.7%,相应的内相富集倍数分别为4.9倍,0.04倍,0.4倍。The extraction of In （Ⅲ） by emulsion liquid membrane system OP-4/P204/liquid paraf- fin/ kerosene/HC1 solution in hollow fiber contactor was studied. The influence factors such as the concentrations of OP-4, P204, liquid paraffin and HC1 concentration of inner phase, the saponifica- tion degree of P204, and the pH value of feed liquid were investigated and optimized through orthogo- nal test. The results show that P2o4 saponification degree is the main influence of indium extraction, and the concentration of In （ Ⅲ ） in receiving phase increased significantly with the increasing of P204 saponification degree. Liquid paraffin concentration, OP-4 concentration and the pH value of feed solution also have a significant influence. In 2 - 6 moL/L concentration range, the HCl concentration has no significant influence. After the optimization of process conditions, the indium extraction from acid lixivium including In3 ＋ ,Fe3＋ ,Cu2＋ ions was carried out, and the extraction rates were 93.6% （In3 ＋ ）, 26.8% （ Fe3 ＋ ） and 26.7% （ Cu2 ＋ ）, respectively. The corresponding enrichment con- centration multiples in inner phase were 4. 9 times （ In3 ＋ ）, 0. 04 times （ Fe3 ＋ ）, and 0.4 times （ Cu2 ＋ ） , repectively.

关 键 词：乳化液膜 中空纤维膜器 提取 铟 正交试验 

分 类 号：O648.2[理学—物理化学] TQ028[理学—化学]