Mg/Al型水滑石及其焙烧产物对水溶液中Cl-的吸附

Adsorption of chloride anion by Mg/Al hydrotalcite and its calcined product

研究了水溶液中氯离子在Mg/Al型水滑石及其焙烧产物上的吸附情况.分析了吸附时间、氯离子浓度及pH对氯离子在水滑石及其焙烧产物上吸附量的影响.实验表明,焙烧产物对氯离子有很强的吸附能力,其吸附能力要远大于水滑石.室温下氯离子饱和吸附量为74.07mg/g,水滑石为16.81 mg/g.吸附等温线均可用Langmuir等温方程描述.

The adsorption capability of Mg/Al hydrotalcite and its calcined products were studied. The effect of adsorption capacity of Hydrotalcite and its calcined product were analyzed on adsorption time, the concentration of chloride Anion and pH. The results indicate that the adsorption of chloride anion in calcined products has more adsorption ability than Mg/Al hydrotalcite. The adsorption capacity in Mg/ Al hydrotalcite and its calcined products are 16.81mg/g and 74.07mg/g respectively under the room temperature and in accordance with the Langmuir eauation.