以纳米蒙脱土(MMT)为原料,Zr(SO4)2为改性剂,采用浸渍法制备Zr-MMT用于处理低浓度含Cr(Ⅲ)废水,并研究了Zr-MMT纳米材料的吸附机理.采用X射线衍射(XRD)和扫描电子显微镜(SEM)对Zr-MMT纳米材料进行表征.结果表明,吸附后的Zr-MMT表面有Cr(Ⅲ)存在;Zr-MMT对Cr(Ⅲ)的吸附方式主要有离子交换、静电吸附和表面吸附,并且该吸附过程可以用二级动力学方程和Langmuir方程进行很好的拟合.解决了鞣制废物资源化利用中Zr(OH)4和ZrO2在强酸强碱性条件下不稳定的问题,制得了一种稳定性好的纳米吸附材料.
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