镁铝水滑石对有机物吸附的性能和机理研究  

Research on Adsorption Ability and Mechanism of Organic Matter by Mg-Al Hydrotalcite

作　　者：刘庆梅[1] 刘丹[1] 陶丽霞[1] 王东梅[1] 

机构地区：[1]西南交通大学地球科学与环境工程学院,四川成都610031

出　　处：《环境科技》2013年第5期6-9,共4页Environmental Science and Technology

基　　金：中央高校基本科研业务费专项资金;资助-青年教师百人计划项目(SWJTU09BR171);2012年度西南交通大学实验教学与实验技术项目资助

摘　　要：采用单因素法考察了镁铝水滑石焙烧条件与吸附反应参数对有机物吸附性能的影响,与活性炭的吸附性能进行了比较,并对吸附机制进行了探讨。结果表明:焙烧温度500℃、焙烧时间5 h为最佳焙烧条件;最适投加量为2 g,最佳反应时间为4 h,有机物吸附效果与阴离子浓度负相关;去除机理主要是表面吸附和离子交换。该研究可为利用镁铝水滑石作为吸附材料处理有机废水的工程应用提供依据。The influences of Mg-A1 Hydrotalcite calcination conditions and adsorption reaction parameters on the adsorption properties of organic matter were investigated by single factor method. Adsorption properties of Mg-A1 Hydrotalcite were compared with activated carbon,and the mechanism adsorption were discussed. The results showed that the optimum calcination temperature was 500 ℃ and the optimum calcination time was 5 hours, the optimum dosage was 2 g,the optimum adsorption time was 4 hours,and the adsorption effects of organic matter ware negatively related to the concentration of anions. The main removal mechanism is adsorption and ion exchange. The study provides the basis to take advantage of Mg- A1 Hydrotalcite as adsorbent material handling organic waste for engineering application.

关 键 词：改性 二氧化钛 光催化 水处理 

分 类 号：X3[环境科学与工程—环境工程]