Journal of Industrial and Engineering Chemistry, Vol.20, No.2, 379-390, March, 2014
High efficient adsorption of gold ions onto the novel functional composite silica microspheres encapsulated by organophosphonated polystyrene
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The novel functional composite silica microspheres encapsulated by organophosphonated polystyrene (SG-PS-N-P) has been successfully synthesized. SG.PS.N.P was employed to adsorb Au(III) from simulated wastewater, and it exhibited excellent performance, and the maximum adsorption capacity was 980.39 mg/g at 35 ℃. The adsorption process optimization was performed using response surface methodology (RSM), and the analysis of variance(ANOVA) of the quadratic model demonstrated that the model was highly significant. Moreover, the regeneration capacities of SG-PS-N-P were investigated, and it has been found that the adsorption capability remains high after several cycles of adsorption-desorption.
Keywords:Composite;Functionalization of polymers;Silica;Encapsulation;Au(III) adsorption;Response surface methodology
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