改性累托石吸附处理含镉废水

采用硫酸和高分子絮凝剂聚二甲基二烯丙基氯化铵对累托石进行改性,考察了改性累托石吸附处理模拟含镉废水的影响因素.实验结果表明,在废水质量浓度为50 mg/L、废水pH为6.0、改性累托石加入量为1.2g/L、吸附时间为90 min、废水温度为25℃的条件下,改性累托石对镉的去除率可达98.00%以上,改性累托石对镉的吸附符合Langmuir模型.

Adsorption Treatment of Cadmium-containing Wastewater Using Modified Rectorite

Rectorite was modified by sulphuric acid and macromolecular flocculant poly-dimethyl-diallyl-ammonium chloride. The factors affecting the adsorption of cadmium in the simulated wastewater on the modified rectorite were researched. The experimental results show that under the conditions of wastewater mass concentration 50 mg/L, pH 6. 0, modified rectorite dosage 1. 2 g/L, adsorption time 90 min and wastewater temperature 25 ℃, the removal rate of cadmium is over 98.00%. The adsorption of cadmium on the modified rectorite accords with Langmuir adsorption model.