淀粉黄原酸酯去除重金属废水中Pb^(2+)的研究

The study on the removal of lead ion from heavy metal wastewater with starch xanthate

本文用淀粉黄原酸酯处理了含重金属Pb2+废水,探讨了淀粉黄原酸酯的用量、溶液的pH值和反应时间对去除效率的影响。实验结果表明,去除率随pH值的增高而增大,Pb2+的去除率达99.92%,水中Pb2+残余量<0.10mg/L。去除效果显著,可以回收重金属,没有二次污染。

In this paper, wastewater which contains lead ion was treated with starch xanthate. Some factors which affect the removal of lead ion such as the amount of starch xanthate, the pH value of solution and the reaction time were studied. The results showed that the removal rate of lead increased with the rising of the pH value, the best removal rate is up to 99.92%, and the residual concentration of lead ion is less than 0.10mg/L. The removal effect is re,markable and the heavy metal can be recycled without secondary pollution.