Extraction of Cesium and Rubidium with 4-tert-butyl-2-(α-methylbenzyl)phenol from Salt Lake Brine

摘要：

　　This work shows the extraction of cesium(Cs+)and rubidium(Rb+)from salt lake brine containing potassium(K+)and magnesium(Mg2+).The results show that 4-tert-butyl-2-(α-methylbenzyl)phenol(t-BAMBP)diluted in sulfonated kerosene(SK)has an excellent extraction effect.Infrared spectroscopic studies indicate that polymerize to form the dimer in the t-BAMBP when Cs+ or Rb+ were extracted.The effects of K+ ,Mg2+ ,t-BAMBP concentration,the volume ratio of organic phase to aqueous phase(O/A)and the alkalinity(pH)of aqueous phase were investigated.The K+ and Mg2+ should be eliminated through precipitating before the extraction and separation of Cs+ and Rb+ .The optimum extraction conditions of the experimental brine were as follows:0.8 mol/L t-BAMBP diluted in SK,pH≥13,a phase ratio of 1:1,and an extraction contact time of 2 min at room temperature.The optimal extraction yields of Cs+ and Rb+ were as high as 100%and 85.8%,in addition,8.76%of K+ was co-extracted.Further work would increase the extraction yield and selectivity of Rb+ and realize the efficient separation of Cs+ and Rb+ from brine.

关键词： Salk lake brine Extraction t-BAMBP Separation Cesium Rubidium

作者: PANG Deng-ke FU Zhen-hai ZHANG Zhi-hong ZHANG Yong-ming MA Yan-fang WANG Jing ZHAO Dong-mei

作者单位: Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Inst Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Inst Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province,Xining,810008,China

会议类型: 国际会议

会议名称: 36th International Conference on Solution Chemistry (36ICSC)(第36届国际溶液化学大会)

会议地点: 西宁

会议语种:英文

页码: 111-119

在线出版日期: 2019-08-05（万方平台首次上网日期，不代表论文的发表时间）