摘要
采用静态吸附实验方法,研究了吸附时间、溶液p H值、吸附剂投加量和溶液初始浓度等因素对内蒙高庙子膨润土吸附Sr2+和Cs+的性能,结果表明:高庙子膨润土对含Cs+放射性废水的处理效果要优于对含Sr2+的处理效果,其原因在于Cs+离子水合半径比Sr2+的离子水合离子小,当Sr2+和Cs+与蒙脱石矿物层间Na+、K+、Ca2+和Mg2+等发生离子交换时,Cs+离比Sr2+离子更易于进入蒙脱石层间而被固定。
The static adsorption experiments were carried out to investigate the adsorption performance of strontium and caesium on GMZ bontonite in different adsorption time, pH values, adsorbent dosage and initial concentration, these results indicated that the adsorption performance of GMZ bentonite for Cs^＋ was better than Sr^2＋ , and the reason was that hydrated ionic radius of caesium was bigger than hydrated ionic radius of strontium, so that Cs^＋ was more easily to be adsorbed into the interlayer of montmorillonite than Sr^2＋ when Sr2 ~ and Cs^＋ were respectively exchanged with Na^＋ ,K^＋ ,Ca^2＋ and Mg^2＋ of montmorillonite.
出处
《山东化工》
CAS
2015年第16期206-209,共4页
Shandong Chemical Industry
基金
国家自然科学基金项目(41402248)
四川省教育厅科技创新团队项目(12zd1106)
固体废物处理与资源化教育部重点实验室开放基金项目(12zxgk11)
非金属复合与功能材料科技部重点实验室开放基金项目(11zxfk06)
核废物与环境安全国防重点学科实验室团队基金项目(13zxnk08)
核废物与环境安全四川省协同创新中心预研基金项目(15yyhk03)
西南科技大学重点科研平台专职科研创新团队基金(14tdhk01)
关键词
高庙子膨润土
吸附性能
锶
铯
GMZ bentonite
adsorption performance
Sr
Cs
