Adsorption of Re(Ⅶ) by coated solvent-impregnated resins containing Alamine 304-1 from sulfuric acid solutions  

作　　者：Xue-Yi Guo Zhong-Chen Ma Gao-Wei Liu Dong Li Qing-Hua Tian 

机构地区：[1]School of Metallurgy and Environment,Central South University,Changsha 410083,China [2]National and Regional Joint Engineering Research Center of Nonferrous Metal Resource Recycling,Changsha 410083,China

出　　处：《Rare Metals》2020年第8期942-950,共9页稀有金属（英文版）

基　　金：financially supported by the Fundamental Research Funds for the Central Universities of Central South University(No.2019zzts243);the National Natural Science Foundation of China(No.51604303);Hunan Natural Science Fund for Distinguished Young Scholar(No.2019JJ20031)。

摘　　要：The recovery of rhenium from waste acid is an urgent issue due to low rhenium concentration and high sulfuric acidity.To solve the problem,novel coated solvent-impregnated resins consisting of inert resins LS-300,Alamine 304-1 and the PVA film(304-CSIRs)were prepared for the separation of Re(Ⅶ)from high sulfuric acid solutions.It was shown that the PVA film coated completely on the surfaces of LS-300 resins with a thickness of 5μm,and Alamine 304-1 distributed completely inside the porous of LS-300 resins.The adsorption fitted well with Langmuir model and pseudo-second-order model with the saturation adsorption capacity of139.40 mg·g-1.The maximum separation factor of Re(Ⅶ)versus Cu(Ⅱ)was up to 483,and 304-CSIRs had no adsorptions for As(V).The adsorption capacity of Re(Ⅶ)onto 304-CSIRs maintained in 97.79%at the fifth adsorption-desorption cycle.99.87%of rhenium was recovered by 304-CSIRs from waste acid generated from a copper smelter.

关 键 词：ADSORPTION Re(Ⅶ) COATED Solvent-impregnated resins Alamine 304-1 

分 类 号：X703[环境科学与工程—环境工程]