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Sorption of gold(iii) from hydrochloric acid solutions by the sorbents based on benzo-15-crown-5статья
- Авторы: Dovhyi I.I., Bezhin N.A.
- Журнал: Russian Chemical Bulletin
- Том: 71
- Номер: 2
- Год издания: 2022
- Издательство: Springer Nature
- Местоположение издательства: Switzerland
- Первая страница: 254
- Последняя страница: 259
- DOI: 10.1007/s11172-022-3405-6
- Аннотация: 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.
- Добавил в систему: Бежин Николай Алексеевич