Investigation of sorption behaviors of La, Pr, Nd, Sm, Eu and Gd on D2EHPA-impregnated XAD7 resin in nitric acid medium

ABSTRACT

The recovery of rare earth is an essential problem from scientific and technological point of view. In this study, we focused on sorption of trivalent lanthanides using D2EHPA-impregnated XAD7 resin. The solvent-impregnated resin was characterized by SEM, FT-IR, TGA-DSC and surface-area and porosity. The factors influencing the distribution of metals, such as extractant loading ratio, pH, shaking time and ratio of the solution volume to the sorbent amount were investigated. The remarkable K_d difference between Gd and La was achieved at pH 1 and 20% loading ratio.

KEYWORDS:

• Rare earth elements
• D2EHPA
• XAD7
• solvent impregnated resin (SIR)
• sorption

Additional information

Funding

This research was financially supported by TUBITAK (Scientific and Technological Research Council of Turkey, Project No: 115M527). The authors would like to thank TUBITAK for funding the project.