一种新型吸附剂处理废水中镉离子的研究

Treatment of cadmium ion in wastewater by a novel adsorbent

以聚合氯化铝改性盐酸酸化的凹凸棒土,制备得到一种新型吸附剂APAC,用红外光谱进行了结构确认。通过实验考察了APAC对模拟废水中镉离子的吸附性能,结果表明,在废水中镉离子量一定条件下,以浓度为1mol/L盐酸酸化凹土,m(酸化凹土)∶m(聚合氯化铝)=1∶1,APAC加入量为0.5g及吸附时间为2h时,镉离子的去除率高达95.8%。

A novel adsorbent APAC was prepared by the method of the aluminium polychlorid modified acidulated attapulgite.The structure of APAC was confirmed by IR.The experiment examined the APAC adsorption of cadmium ion in the simulated wastewater.The results showed that under the condition of a certain amount of cadmium ions in wastewater,in a concentration for 1mol/L HCl acidified attapulgite,aluminium polychlorid with acidified attapulgite ratio is 1∶1,APAC amount 0.5g and adsorption time was 2h,the removal rate of cadmium ion was 95.8%.