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

来源：Rare Metals, 2020, 39(08): 942-950.

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.

• 单位
  中南大学