摘要
用天然红黄土作为吸附剂进行了去除水中Cr3＋和Cd2＋的试验研究,考察了pH值、吸附时间、红黄土投加量对吸附效果的影响,测定了不同pH和不同温度下的吸附等温线。结果表明：红黄土对Cr3＋的吸附能力高于对Cd2＋的吸附能力,一定条件下,Cr3＋的去除率可达99.5%,而Cd2＋的去除率最高约63%;吸附行为均符合Lang-muir单分子层吸附模型。根据试验结果,认为红黄土有望成为处理含重金属离子废水的新型吸附材料。
The experiments on the Cr3＋ and Cd2＋ removal from water with red loess as the sorbent are carried out,and the influence of pH,contract time,adsorbent dose and temperature on the adsorption of Cr3＋,Cd2＋ was studied.The isotherms at different pH and temperatures have been determined.The results indicate that the red loess has a better adsorption effect on Cr3＋ than Cd2＋.Under a certain condition,the removal rate of Cr3＋ can reach 99.5%,while that of Cd2＋ maximize to be about 63%.Both adsorption behaviors are fitted to the Langmuir monolayer adsorption model.According the results,it is considered that red loess is expected to become a new-type adsorbing material for treating the waste water of containing heavy metal ions.
出处
《金属矿山》
CAS
北大核心
2010年第8期175-178,共4页
Metal Mine
基金
河北省自然科学基金项目(编号:B2009000258)
