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中文摘要：
利用共沉淀水热法制备镁铝阴离子粘土材料，研究了其吸附水中As（V）的动力学。结果表明，在初始浓度为20．42—60．88mg／L及温度为298—323K的范围内，阴离子粘土对水中As（V）的吸附动力学数据均符合拟二级速率方程。吸附表观活化能为14．40kJ／mol，说明温度对此吸附的影响并不显著。
英文摘要：
Mg-Al anionic clay was prepared employing coprecipitation and hydrothermal method, and the adsorption kinetics of As （ V ） from aqueous solutions by anionic clay was investigated. The results show that kinetics data for the adsorption of As （ V ） from aqueous solutions were in good agreement with pseudo-second rate equation within the initial concentration of 20.42-60.88 mg/L and experimental temperature of 298-323 K. The apparent adsorption activation energy is as low as 14.40 kJ/mol, suggesting that the experimental temperature has no marked influence on the adsorption of As （ V ） onto anionic clay.
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