期刊
SEPARATION SCIENCE AND TECHNOLOGY
卷 44, 期 3, 页码 645-667出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/01496390802634307
关键词
Bone char; kinetic models; sorption kinetics; Sr2+
资金
- Ministry of Science and Environmental Protection of the Republic of Serbia [142050]
The effect of particle size, bone char mass, initial pH, and metal concentration on the kinetics of Sr2+ sorption by bone char was studied and discussed. Considering the sorbed amounts of Sr2+, solution pH changes, changes of Ca2+ concentrations and Ca/Sr molar ratios, with time, it was concluded that surface complexation reactions are dominant in the first, more rapid stage of the sorption process, while the contribution of the ion-exchange mechanism increases with time and becomes more significant in the second, slower phase. Under all investigated experimental conditions, the pseudo-second-order model was found to provide high correlation coefficients and the equilibrium amounts of Sr2+ sorbed comparable to the values obtained experimentally.
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