环糊精衍生物对废水中几种金属离子处理的研究

环糊精作为一种环境友好材料近年来被广泛应用于水处理[1]、受污染土壤的治理和恢复[2],能够对有机污染物产生降解作用。对环糊精的结构修饰能够提高其溶解度,并且改变其空间结构,产生一些和环糊精本体不同的化学性质。各种金属造成的污染日趋严重,成为影响我国人民健康水平和社会经济发展的一个重要因素,研究新的环境友好材料消除金属的污染是当前的比较新颖的研究方向。本课题就是基于以上问题开展的研究工作。本实验采用经改性的β-环糊精,分析了其对Fe(Ⅱ)、Cu(Ⅱ)、Zn(Ⅱ)三种金属离子的去除效果[3,4],并研究了温度、反应时间、pH因素实验效果的影响。实验结果表明:β-环糊精的交联聚合物对Fe(Ⅱ)的去除率可以达到95.8%,对Cu(Ⅱ)的去除率为25.9%,对Zn(Ⅱ)的去除也有一定的效果。

Study on the Several Metal Ions Removal in Wastewater by Cyclodextrins Derivative

Cyclodextrins as an environmentally friendly materials are widely used in water treatment,contaminated soil management and recovery,and for organic pollutants biodegradable in recent years.Researchers found that after chemical structural modification,the solubility and space structure of Cyclodextrins were all increased.Pollutions caused by metal have become more and more serious in China,it is also an important factor that affect people’s health level and social’s economic development.To study a new environmental friendly materials to eliminate heavy metal pollution is a new research direction.The research work is based on the above problems.This experiment uses modified β-cyclodextrins,analyses the Fe(Ⅱ),Cu(Ⅱ),Zn(Ⅱ) three kinds of metal ions removal effect.And the influence factors of temperature,reaction time,pH are investigated.The results show that the β-cyclodextrin polymer cross-linked can remove 95.8% of Fe(Ⅱ),the removal rate of Cu(Ⅱ) can up to 25.9%,and there is a little effect on removal of the Zn(Ⅱ).