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研究了改性凹凸棒土对水溶液中苯的吸附规律。结果表明,改性凹凸棒土对苯的吸附量和去除率提高了2倍多,pH值对吸附量的影响甚小,吸附量随温度上升而增加,改进的BET方程能较好地描述实验等温线。其吸附机理可能为表面的疏水作用与化学吸附和进入内部孔道吸附。
The adsorption of benzene on aqueous solution by modified attapulgite was studied. The results showed that the adsorption capacity and removal rate of benzene on modified attapulgite clay increased more than two times. The effect of pH value on the adsorption capacity was very little. The adsorption capacity increased with the increase of temperature. The modified BET equation could better describe the experiment Isotherm. The adsorption mechanism may be surface hydrophobic interaction with chemical adsorption and adsorption into the internal pores.