摘要
膨润土因其特殊的晶体结构而具有良好的吸附能力、阳离子交换能力和吸水膨胀能力等性能。近年来 ,随着人们对其结构和理化性能的进一步了解 ,膨润土的高层次开发已成为非金属矿物材料的研究热点。文中对钙基膨润土进行了改性处理 ,并着重探讨了Ca -基膨润土对重金属废水的吸附 ,并对含Cr6+ 和Cu2 + 的模拟废水进行了吸附试验 ,同时比较了钠基土和有机土的吸附效果。进一步探讨了吸附时间及吸附液pH值对改性膨润土吸附Cr6+ 的影响。
With special crystal structure, bentonite possesses good abilities of adsorption, cation exchange and swelling by water absorption. In recent years, with the people's further understanding of its structural and physico-chemical properties, high-level exploitation of bentonite has become a heat point in the research of nonmentallic mineral materials. In this study,Ca-bentonite was modified and the adsorption of Ca-bentonite on heavy metals wastewater was discussed. Adsorption test was made with simulated wastewater containing Cr 6+ and Cu 2+ , the adsorption results of sodium bentonite and organic bentonite were compared and the effect of adsorption time and the pH value of the solution of the modified bentonite on Cr 6+ adsorption was further investigated.
出处
《金属矿山》
CAS
北大核心
2004年第9期57-59,共3页
Metal Mine
