静电式准液膜法提取Eu~(3+)的研究

STUDIES ON THE EXTRACTION OF Eu~(3+) BY MEANS OF ELECTROSTATIC PSEUDO LIQUID MEMBRANE

摘要: 用静电式准液膜这一新型分离方法,研究了P5709-加氢煤油提取Eu~(3+)的过程。通过实验,确定了萃取剂浓度、料液初始pH值等工艺条件以及用于相分散的电场电压、料液流量等操作条件。实验结果表明,静电式准液膜适用于P 5709提取Eu~(3+)的体系。含Eu~(3+)780 ppm的料液经准液膜反应槽萃取4秒钟左右,萃取率可达95％以上,同时在反萃侧可使Eu~(3+)浓缩50倍。

Abstract: A new type liquid membrane——electrostatic pseudo liquid membrane issuccessfully applied to the extraction of Eu~(3+) by a new extractant P5709. Effectson the extraction efficiency by the concentration of extractant, initial pH of feedsolution, electric field voltage and flow rate of feed are experimentally studied. The results of experiments show that the electrostatic pseudo liquid membraneis suitable for extracting Eu~(3+) by P5709. The extraction percentage from feedsolution containing 780 ppm Eu~(3+) reaches about 95% in the extraction cell, whileEu~(3+) is enriched by 50 times in the stripping cell. The duration time of aqueousdroplets in electric field is only 4 seconds.