A Novel Binary-Extractant-Impregnated Resin for Selective Recovery of Scandium
A Novel Binary-Extractant-Impregnated Resin for Selective Recovery of Scandium
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DOI：
10.1252/jcej.18we175
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发表时间：
2019-01
影响因子：
0.8
通讯作者：
M. Sharaf;Wataru Yoshida;Fukiko Kubota;M. Goto
中科院分区：
文献类型：
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作者：
M. Sharaf;Wataru Yoshida;Fukiko Kubota;M. Goto
以2-乙基己基膦酸单-2-乙基己基酯（商品名PC-88 A）、新癸酸（Versatic 10）和XAD-7 HP高分子微球为原料，制备了萃取剂浸渍树脂（EIR），用于钪（Sc）的分离富集。Sc和其他金属离子之间的分离因子非常高，允许从复杂的金属混合物溶液中选择性地回收Sc。此外，解吸的Sc定量实现使用2 M硫酸，这是很难的单萃取剂浸渍树脂。研究了二元EIR的吸附行为、动力学和负载量。树脂经5次重复使用后，具有良好的重复使用性能。这种二元萃取剂浸渍的概念可能为开发用于金属分离的新型离子交换树脂提供新的途径。
Extractant-impregnated resins (EIRs) prepared from 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester (commercial name PC-88A), neodecanoic acid (Versatic 10), and XAD-7HP polymeric beads have been developed for separation and pre-concentration of scandium (Sc). The separation factors between Sc and other metal ions are very high, allowing for selective recovery of Sc from a complex metal-mixture solution. Furthermore, desorption of Sc is quantitatively achieved using 2 M sulfuric acid, which is difficult for single-extractant-impregnated resins. The adsorption behavior, kinetics, and loading capacity of the binary EIR were investigated. The good reusability of the resin was confirmed by five times repeated use in recycling operation. This binary-extractant-impregnated concept could provide a new way to develop novel ion-exchange resins for metal separation.