Sorption of rhenium on synthetic cyclohexylamine anion exchange resin LSC-436

A new organic synthetic anion exchange resin (LSC-436) containing cyclohexylamine group was prepared for the sorption of rhenium. The traditional batch tests were applied to investigate the mechanism of sorption for rhenium on LSC-436 with respect to contact time, initial rhenium concentration, the value of pH and the amount of resin. The experimental data obtained from batch tests were modeled using the Langmuir/Freundlich isotherms and pseudo-first-kinetic and pseudo-second-kinetic models to obtain key dynamic parameters for investigating the mechanism of sorption of rhenium. The LSC-436 resin was characterized using scanning electron microscopy (SEM-EDS), Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) techniques to further study the sorption mechanism.