多孔锆改性蒙脱土的制备及吸铬性能研究

Preparation and adsorption for Cr(Ⅲ)of porous Zr modified MMT

将锆改性蒙脱土通过凝胶注模的方法成型,在成型过程中加入聚苯乙烯球形成多孔结构,制得4种多孔改性蒙脱土.结果表明,吸附剂内部形成直径约为1~1.2mm的圆孔,增大了多孔改性蒙脱土与废水的接触面积,当Zr∶MMT=1∶5时,成型后的多孔改性蒙脱土吸附剂的收缩率最小为30.27%,孔隙率最大为85.04%,对Cr（Ⅲ）的吸附性能最好,吸附量为10.01mg/g.

The four kinds of porous modified montmorillonite was prepared using gelcasting,and adding polystyrene balls to form porous structure.Results show that the inside of four porous modified montmorillonite holes with diameter of about 1to 1.2 mm,increasing the contact area with wastewater.When Zr∶ MMT = 1∶5,porous modified montmorillonite has a minimum shrinkage of 30.27%,maximum porosity of 80.94%,the best adsorption capacity of 10.01mg/g.