Adsorption of Re（Ⅶ） by coated solvent-impregnated resins containing Alamine 304-1 from sulfuric acid solutions
来源期刊：Rare Metals2020年第8期
论文作者：Xue-Yi Guo Zhong-Chen Ma Gao-Wei Liu Dong Li Qing-Hua Tian
文章页码：942 - 950
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 5 μm,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.
Xue-Yi Guo1,2，Zhong-Chen Ma1,2，Gao-Wei Liu1,2，Dong Li1,2，Qing-Hua Tian1,2
1. School of Metallurgy and Environment,Central South University2. National and Regional Joint Engineering Research Center of Nonferrous Metal Resource Recycling
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 5 μm,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.
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