有机改性蒙脱土对废水中Pb^(2+)的吸附能力研究

Researches on Adsorption Behaviour of Pb^(2+) with Organomontmorillonite

通过与Na基蒙脱土比较,研究了有机化改性后的蒙脱土对Pb2+的吸附行为,考察了改性蒙脱土吸附时间、pH值、用量、吸附温度及粒度等因素对吸附的影响。结果表明:改性蒙脱土吸附时间40 min、pH 7.0、蒙脱土用量1.0 g·L-1、吸附温度30℃的条件下,Pb2+的去除率可以达90%以上。

With comparison to Na-montmorillonite, the adsorption behavior of lead on coated by Organomontmorillonite was investigated. The factors of adsorption conditions on adsorption behavior of Organomontmorillonite were investigated, such as the whisking time, pH value, the adding quantity, temperature and the size of montmorillonite. The results show that the removal rate of Pb2＋ by montmorillonite can reach greater than 90% under the following conditions ： by whisking time of 40 rains, pH value of 7.0, the adding quantity of montmorillonite of 1.0 g.L-1, and temperature of 30 ℃.