γ-Al2O3固载水滑石的制备及其动态吸附Cr(Ⅵ)的性能研究  

Preparation of γ-AlO Supported Hydrotalcite and Its Dynamic Adsorption for Cr(VI)

作　　者：孙洪刚 李士凤[1] SUN Hong-gang;LI Shi-feng(Liaoning Engineering Research Center for Treatment and Recycling of Industrially Discharged Heavy Metals,Shenyang University of Chemical Technology,Shenyang Liaoning 110142,China)

机构地区：[1]沈阳化工大学辽宁省工业排放重金属处理与资源化技术工程研究中心,辽宁沈阳110142

出　　处：《当代化工》2020年第7期1384-1387,共4页Contemporary Chemical Industry

摘　　要：以γ-Al2O3、硝酸镁、尿素为主要原料,通过水热法制备γ-Al2O3固载水滑石吸附去除Cr。动态吸附实验的最佳条件为:C=100mg·L-1、V=15mL·min-1、pH=3、m=20g,在此条件下饱和吸附量达到最大值49.2mg·g-1。通过理论分析、实验结果和Thomas模型非线性拟合表明,γ-Al2O3固载水滑石对铬的动态吸附效果良好,是治理水环境中铬污染的一种有效方法。Theγ-Al2O3 supported hydrotalcite was prepared fromγ-Al2O3,magnesium nitrate and urea by the hydrothermal method,and it was used to adsorb and remove Cr(VI).The optimum conditions of dynamic adsorption experiment were determined as follows:C=100 mg·L-1,V=15 mL·min-1,pH=3、m=20 g.Under above conditions,the saturated adsorption capacity reached the maximum value of 49.2 mg·g-1.Through theoretical analysis,the experimental results and Thomas model nonlinear fitting showed that the dynamic adsorption effect ofγ-Al2O3 supported hydrotalcite on chromium was good,and it was an effective method to control chromium pollution in water environment.

关 键 词：Γ-AL2O3 水滑石 动态吸附 Cr(Ⅵ) Thomas模型 

分 类 号：X70[环境科学与工程—环境工程]