滑石对水中Hg（Ⅱ）的吸附性能及机理分析

摘要

Sorption properties of talc for Hg (II) in water were studied. Effects of talc dosage, reaction time and pH on the adsorption were investigated, the adsorption isotherm was drawn, and the adsorption mechanism was analyzed. The results show that, the talc has good adsorption effect for Hg (II) in water,the adsorption results are in accord with Langmuir and Freundlich isothermal adsorption models, the adsorption mechanism mainly is surface adsorption, the complexation reaction also plays a certain role.%采用吸附实验方法，研究了滑石对水中Hg(Ⅱ)的吸附性能，探讨了滑石用量、反应时间和溶液pH值对吸附效果的影响，绘制了吸附等温线，并分析机理，结果表明：滑石对水中Hg(Ⅱ)的吸附效果良好，吸附结果均能较好的符合Langmuir和Freundlich等温吸附模型，主要以表面吸附为主，络合反应也起到了一定的作用。