改性膨润土吸附重金属离子

本文介绍了采用有机高分子使膨润土端面带有的正电荷为负电荷,从而增大了膨润土所带的负电荷总量和表面积.同时,研究了提高吸附重金属离子(Hg2 、Cr6 、Co2 )的性能.实验结果表明:改性的膨润土比未改性的膨润土对金属离子的吸附率提高近20个百分点.利用x射线衍射图证明膨润土端面改性是成功的,并解释了改性膨润土提高重金属离子吸附率的原因,利用改性的办法可能进一步扩大膨润土处理工业废水的应用.

Study on Modified Bentonite in Absorbing the heavy metal ions

in this paper,we introduced that the bentonite negative electric charges and surface area can be increased by using organic macromolecules to change the positive charges on the side face of bentonite into negative charges. How to increase the absorption capability of heavy metal ions such as Hg~(2+),Cr~(6+) and Co~(2+) is also studied.The results indicate that denatured bentonite has a higher absorption capability then un denatured one by 20%.The denaturation of bentonite is proved successful from X-ray diffraction, and the reason is also known. The bentonite may be extend the application of bentonite in processing industry waste water.