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期刊论文
Adsorption thermodynamic and kinetic studies of dissolvedchromium onto humic acids
Colloids and Surfaces B: Biointerfaces 65(2008)25-29，-0001，（）：
Adsorption thermodynamic characteristic and kinetics of dissolved chromium from aqueous solutionsonto humic acids (HAs) were studied. The results showed that the Freundlich isotherm model describedthe equilibrium data well. The negative _G◦ confirmed the spontaneity of adsorption process. The positive_H◦ and _S◦ proved the endothermic nature and irreversibility of the sorption. Furthermore, theadsorption process followed the pseudo-second-order equation. With increasing initial concentration ofCr(VI), the adsorption rate constant decreased while the maximum adsorption capacity increased.
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