ИСТИНА

For recovery of rhenium from solutions with low concentration impregnate containing phosphine oxide (PhOR) using carriers of natural origin - the active coal-based raw vegetable waste (rice husk and buckwheat husk) (RH и BH) were obtained. Using transmission electron microscope (FEI Osiris, USA) micrographs of the surface modified active carbons were obtained and the distribution of elements (Re, P, Si) was studied. The equilibrium and kinetic characteristics of rhenium sorption from sulfuric acid solutions by impregnate based on active carbon RН were determined in batch conditions. Cyclic studies have shown that the sorption capacity of impregnate is almost constant when performing 4 cycles.