吸附树脂制备及其在处理含Cr(Ⅵ)废水中的应用

Preparation of adsorption resin and application to deal with wastewater contaminated Cr(Ⅵ)

通过正交实验设计,采用悬浮聚合技术制备苯乙烯-二乙烯苯系列吸附树脂,以去除模拟废水中的Cr(VI)为目的,对树脂的合成条件进行了研究分析。借助低温物理吸附仪、同步热分析仪和红外光谱考察了树脂物理性能。主要考察了搅拌机的转速、致孔剂的配比、交联度这3个因素对吸附树脂的影响。实验结果表明在制备树脂的过程中致孔剂的配比对合成树脂的物理性能和吸附性能影响最大,其次是交联度。当致孔剂中甲苯与环己烷的配比为2∶1;交联度为20%;搅拌转数为350n/min条件下所制备树脂比表面积为430m2/g,对Cr(VI)的吸附量可达62.16mg/g。

A series of adsorption resin were prepared by suspension polymerization method. The adsorption resins were characterized by FT-IR,TG-DSC techniques and used to deal with wastewater containted chromium（Ⅵ）solution for adsorption. The condition of suspension polymerization method was investigated and analyzed through orthogonal experi- ment. The experimental results showed that the properties of adsorption resins were influenced mostly by the ratio of poro- gen between toluene and cyclohexane, when the ratio of the porogen was 2 ： 1 ,the cross linking degree was 20% and rota- ting speed was 350n/min,The resin had a specific surface area of 430m2/g and a higher adsorption capacity, it＇s adsorption capacity can reach 62, 16mg/g.