Open AccessFeatures of gallium sorption on mechanoactivated titanium dioxide.
Author(s) -
Н. В. Печищева,
A. D. Korobitsyna,
O. V. Melchakova
Publication year - 2020
Publication title -
trudy kolʹskogo naučnogo centra ran
Language(s) - English
Resource type - Journals
ISSN - 2307-5252
DOI - 10.37614/2307-5252.2020.3.4.021
Subject(s) - sorption , arrhenius equation , activation energy , rutile , langmuir , adsorption , thermodynamics , gallium , aqueous solution , materials science , titanium dioxide , titanium , chemistry , organic chemistry , metallurgy , physics
The features of sorption of gallium from aqueous solutions on mechanically activated TiO2(rutile) were studied. The dependence of the degree of sorption on the time of mechanical activation is obtained. The experimental sorption isotherms at temperatures from 20 to 50 ºСwere processed by adsorption models of Langmuir, Freindlich, Dubinin —Radushkevich. To achieve sorption equilibrium depending on temperature, 10–30 minutes are required. Dependence of sorption on time is better described by the kinetic model of the pseudo-second order. According to the Arrhenius equation, the activation energy is calculated —9,7 kJ / mol.