论文部分内容阅读
Reportedly,rare earth metals such as yttrium and europium have been discovered in the waste electronic devices.In order to recover the metals,solvent extraction method is very useful tool [1-3].A study on the separation of yttrium and europium has been carried out in fatty acid solution as a extractant.In order to improve the recovery of yttrium and europium,the effects of the following factors on recovery experiment have been considered:i) fatty acids with various alkyl chain lengths,ii) the concentration of extractant,and iii) pH.The results show that the extraction efficiencies decrease at the same pH with decreasing the concentration of extractant and so pH0.5 moves into higher pH.The pHo.5 between yttrium and europium had relatively higher selectivity in a tetradecanoic acid solution.