介孔纳米γ-Al_2O_3对Ca^(2+)吸附性能的实验研究  

The study of the absorption properties of Ca^(2+) by meso-structured nanometer γ-Al_2O_3

作　　者：杨文焕[1] 张雪峰[1] 郭俊温[1] 

机构地区：[1]内蒙古科技大学能源与环境学院,内蒙古包头014010

出　　处：《内蒙古科技大学学报》2010年第4期371-373,共3页Journal of Inner Mongolia University of Science and Technology

基　　金：国家环境保护部环保公益性行业科研专项项目(200909032)

摘　　要：介孔纳米γ-Al2O3具有很好的小尺寸和高比表面效应,且易回收利用,是一种新型的高效吸附剂.实验利用介孔γ-Al2O3纳米材料进行了对Ca2+吸附性能的研究,探讨了吸附剂投加量、吸附时间、pH值等不同因素对水中Ca2+的吸附效果的影响.实验结果表明:γ-Al2O3对水中Ca2+的吸附反应在15 min左右达到平衡,溶液的pH值对吸附率的影响较大,吸附率随pH值的升高而升高,在pH值为9时反应达到平衡,去除率为83.5%.Meso-structured nanometer γ-Al2O3 powder is a new absorbent that has fine pore,high surface area and characteristics of being easily recycled.By using meso-structured nanometer γ-Al2O3 powders,the adsorption properties of Ca2＋ were studied,and the influence of adsorbent dosage,absorption time and pH value on the absorption of Ca2＋ in water were discussed.The results indicated that absorption capabilities of Ca2＋ rise with the increase of pH value,and absorption reaction reaches equilibrium in 15 minutes with the removal of Ca2＋being 83.5%.

关 键 词：介孔纳米γ-Al2O3 Ca2+吸附 去除率 

分 类 号：X703[环境科学与工程—环境工程]