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Chromatographic separation and recovery of Zn(Ⅱ)and Cu(Ⅱ)from high-chlorine raffinate of germanium chlorination distillation 被引量:1
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作者 Ye-hui-zi WU Kang-gen ZHOU +7 位作者 Wei CHEN Qing-yuan LEI Er-jun ZHANG Yu-yao CHENG Yang JIANG Chang-hong PENG Jun JIANG Xue-kai ZHANG 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2022年第4期1336-1350,共15页
An anion-exchange-based chromatographic separation approach was developed to selectively recover zinc and copper from the high-chlorine raffinate generated in the process of germanium chlorination distillation using 7... An anion-exchange-based chromatographic separation approach was developed to selectively recover zinc and copper from the high-chlorine raffinate generated in the process of germanium chlorination distillation using 717 resins based on the coordination difference between Zn^(2+)/Cu^(2+)and Cl^(-).The theoretical calculation and spectroscopic analyses suggested that the coordination between Zn^(2+)and Cl^(-)is much stronger than that between Cu^(2+)and Cl^(-),and the Cl-concentration significantly affects Zn(Ⅱ)and Cu(Ⅱ)species.The factors involving Cl-concentration,resin dosage,shaking speed,and temperature were investigated to determine the optimal condition,and the maximum separation factor of Zn/Cu reached as high as 479.2.The results of the adsorption isotherms,adsorption kinetics,SEM,FTIR,and XPS analyses indicated that the process followed the monolayer uniform chemisorption.Through the continuous adsorption experiments,Zn(Ⅱ)and Cu(Ⅱ)in the high-chlorine raffinate were separately recovered,allowing the reuse of residual waste acid and germanium. 展开更多
关键词 chromatographic separation Zn/cu recovery high-chlorine raffinate anion exchange 717 resin
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