Abstract:

With the development of chemical industry, refining and collecting valued material in dilute solutions or difficult separation systems has become one of important research aspects. In order to adapt to the demand of modem science and technology, separation Zn²⁺, Cd²⁺ and Fe³⁺ from Eu³⁺ solution to making Eu with high purity is necessary. Hollow fiber membrane (HFM) extraction, as a new separation technique, has many advantages^[1]. The extractant(commercial name as Cyanex302), bis(2,4,4-trimethylpentyl)monothiophosphinic acid, is a soft acid and so it is easy to extract transition elements^[2]. HFM extraction combined with a new extraction system, which had little consumption and no pollution and was a friend environment process.