Title: Study on adsorption performance of Cr(VI) by sawdust
Abstract: Adsorption characteristic of Cr( Ⅵ) on sawdust was studied,and effects of various parameters,such as sawdust dosage,solution pH,temperature were studied by static experiments. The results indicate that the adsorption rate of Cr( Ⅵ) was increased with the increase of the amount of sawdust; the effect of adsorption was decreased with the increase in initial pH; and the effect of adsorption was increased with the increase of the temperature. Sawdust had a good adsorption capacity for Cr( Ⅵ). The adsorption reaction was consistent with the pseudo-second-order kinetic equation,the kinetics experiments show that the particle diffusion is the main rate limiting step before adsorption equilibrium. The adsorption process followed the Langmuir adsorption isotherm. The thermodynamic analysis showed that the adsorption processes were spontaneous and endothermic.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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