Sorption properties of synthetic silicon organic sorbent PSTU-3F on mercury

Авторы: Fiaizullina R.V., Kuznetsov E.V., Salavatova D.S.
Журнал: Experiment in GeoSciences
Том: 25
Номер: 1
Год издания: 2019
Первая страница: 165
Последняя страница: 167
Аннотация: The possibility of using synthetic silicone sorbent PSTU-3F for the adsorption removal of mercury from an aqueous solution has been studied. The dependence of mercury adsorption on the pH of the solution, the amount of the adsorbent and the duration of the contact of the solution with the adsorbent was investigated. It was shown that the amount of adsorption is the higher, the higher the acidity of the solution. This is due to the absolute dominance of the cationic form of the bivalent mercury Hg2+ and the negative charge of the surface of the sorbent. It has been established that an increase in the mass of the sorbent has a significant effect on the shift of the pH of the solutions to a more alkaline region. Therefore, the optimal ratio of the sorbent - solution should be considered the ratio of 1:1000. To interpret the equilibrium mercury adsorption data, an experimental adsorption isotherm was constructed, which was analyzed using the Langmuir and Freundlich equations. As a result, it was shown that the Freundlich equation describes the adsorption process significantly better than the Langmuir equation.
Добавил в систему: Фяйзуллина Рената Вилевна

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