粉煤灰负载铈吸附剂的制备研究  

Preparation Study of Ce-loaded Fly Ash Adsorbent

作　　者：杨磊[1] 赵文岩[1] 马静静[1] 萨仁其其格[1] 

机构地区：[1]内蒙古大学化学化工学院,内蒙古呼和浩特010021

出　　处：《稀土》2009年第6期83-86,共4页Chinese Rare Earths

基　　金：内蒙古自然科学基金项目资助(200607010206);内蒙古大学高层次引进人才科研启动基金项目资助(205217)

摘　　要：研制了一种新颖的铈负载粉煤灰吸附剂。研究了在各种制备条件下制得的吸附剂对氟离子的去除效果。实验结果表明,在pH为8-10,接触时间为16h,焙烧温度为400℃,铈离子浓度为0.2g/L,改性酸浓度为6mol/L时制得的稀土粉煤灰吸附剂,在处理氟离子水溶液时,该吸附剂除氟能力达到了90%以上。并且对比了原状粉煤灰、酸改性粉煤灰和稀土粉煤灰去除氟离子的吸附效率和最佳pH值。In the present paper,a novel adsorbent,Ce-loaded fly ash was prepared.The removal of fluoride by Ce-loaded fly ash adsorbent was evaluated under various preparation conditions.Experimental results showed that this adsorbent,which prepared under the conditions of pH 8～10,modified acid concentration 6mol/L,cerium ions concentration 0.2mg/L,calcination temperature 400℃,and contact time 16h,exhibited maximum adsorption capacity of 90% when used to treat F-aqueous solution.Compared to raw fly ash and acid-modified fly ash,Ce-loaded fly ash showed the best ability to remove fluoride from F-aqueous solution.

关 键 词：稀土 粉煤灰 除氟 吸附 

分 类 号：TQ424.29[化学工程] X523[环境科学与工程—环境工程]