статья в журнале

En

Russian Chemical Bulletin

ISSN:10665285

2022

10.1007/s11172-022-3405-6

Regularities of gold sorption by the impregnated type sorbents based on a 1 M solution of benzo-15-crown-5 in nitrobenzene and benzo-15-crown-5 (30%, without diluent) were studied. The sorption isotherms were constructed, and the sorption and desorption kinetics and sorption dynamics were studied. The time of reaching sorption equilibrium, maximum capacity of the sorbents, and adsorption constants were determined. The data obtained on the time dependence of the sorption parameters are described by the pseudo-second-order kinetic curve. The conditions of gold desorption were found. Gold is quantitatively desorbed from the sorbents by a 2 M solution of ammonium thiocyanate. The sorption and desorption of gold under the dynamic conditions were studied. The dynamic and total exchange capacities of the sorbents were determined. The sorbents studied efficiently sorb gold from hydrochloric acid solutions. © 2022, Springer Science+Business Media LLC

benzo-15-crown-5, desorption, dynamics, gold, isotherm, kinetics, sorption

2022-05-11 11:20:07