蒙脱石／TiO2复合材料清除蓝藻的实验研究

Study on Removal of Blue-green Algae by Composite Material of Montmorillonite Enwrapped with Titanium Dioxide

以蒙脱石作为载体，采用溶胶-凝胶法制备了蒙脱石／TiO2复合材料，并将其用于清除水域中的蓝藻。结果表明：蒙脱石／TiO2复合材料中，一部分TiO2以锐钛矿相存在，另有一部分TiO2进入蒙脱石层间，使其d001由1．27639nm增加至1．42797nm。且当蒙脱石负载TiOz量为3mmol/g时，清除蓝藻效果最好。1h内叶绿素去除率和藻个数去除率均可达到90％以上，浊度可降低70％-80％以上。

The composite material of montmorillonite enwrapped with titanium dioxide is synthesized with via sol-gel method which is used to remove blue-green algae from water. The results show that part of titanium dioxide exists as phase of anatase in the composite material of montmorillonite enwrapped with titanium dioxide and part of titanium dioxide enters into the interlayer of montmorillonite and the d001 increases from 1.27639nm to 1.42797nm. In addition, the effect of removing blue-green algae is the best when the content of titanium dioxide in the composite material of montmorillonite enwrapped with titanium dioxide is 3mmol/g. The removing rate of chlorophyl and the number of microcystis is more than 90%, and the turbidity can reduce more than 70%-80% in one hour.