以氧化钙(CaO)、十六烷基三甲基溴化铵(CTAB)为改性剂,对活性白土进行改性,制得吸附剂CTAB/Ca-Bent.利用傅里叶变换红外光谱仪(FTIR)和X射线衍射仪(XRD)对其进行结构表征.结果表明改性后d001值增大,说明改性分子进入活性白土层间.以苯酚水溶液为模拟废水,考察了改性活性白土对苯酚的吸附特性,并对其进行实验条件的优化和动力学拟合.实验结果表明:当苯酚浓度为100 mg/L,吸附剂用量为30 g/L,吸附温度为298 K,接触时间为30 min,不调节pH值时,苯酚的去除率可以达到78.13％,吸附过程符合准二级动力学.
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