Sorption recovery of rhenium from chromium-containing sulfate solutions by cybber low-basic anionites

Low-basic Cybber anionites with various functional groups and a matrix type are tested for the recovery of rhenium from multicomponent sulfuric acid solutions. It is established that anionite SX002 manifests an increased capacity during the sorption from solutions with a low Re content, while anionite ALX220 is applicable to recover Re at its high concentrations in the solution. The ionic background of the industrial solution affects the capacity of sorbents with respect to rhenium. When studying the kinetic characteristics, it is revealed that sorption processes on ionites are limited by the internal diffusion. The tests of ionites as applied to Cr-containing solutions indicate the possibility of using anionites ALX220 and SX002 to recover rhenium.