天然及改性膨润土吸附废水中Pb2+、Ni2+、Cd2+ 的试验研究

用山东潍坊涌泉某膨润土厂生产的天然钙基膨润土和改性膨润土对模拟含Pb²⁺、Ni²⁺、Cd²⁺的废水分别进行了试验研究。结果表明，该厂的天然钙基膨润土和改性膨润土对废水中的Pb²⁺、Ni²⁺、Cd²⁺有较高的去除率，可以作为重金属离子Pb²⁺、Ni²⁺、Cd²⁺的吸附剂使用

Experimental Study on Adsorption of Pb2+,Ni2+ and Cd2+ from Waste Water by Natural and Modified Bentonites

Experimental study was made on adsorbing Pb²⁺，Ni²⁺ and Cd²⁺  from the simulated waste water by using natural Ca-betonite and modified betonite produced by a betonite factory in Yongquan，Weifang，Shandong respectively. The results show that the natural Ca- betonite and modified betonite produced by this betonite factory have high removal rates of Pb²⁺，Ni²⁺ and Cd²⁺  in the waste water and therefore，can be used as the absorbent for heavy metal ions of Pb²⁺，Ni²⁺ and Cd²⁺.