原子能科学技术Issue(1)：31-38,8.DOI:10.7538/yzk.2016.50.01.0031
聚丙烯腈-钛硅酸钠球形复合吸附剂对 Cs ＋的吸附性能研究
Research on Adsorption Property of Cs+on PAN-NaTS Spherical Composite Adsorbent
摘要
Abstract
The effects of contact time ,pH ,co‐existing ions and initial Cs+ concentration on the adsorption property of Cs+ on polyacrylonitrile‐sodium titanosilicate (PAN‐NaTS) were studied by static experiments . The adsorption process was analyzed by thermodynamics ,adsorption mechanism and kinetics ,and the PAN‐NaTS was charac‐terized and analyzed by SEM ,FT‐IR and XRD .The results show that the adsorption process of Cs+ on PAN‐NaTS reaches equilibrium after about 20 h ,the optimized pH value of solution is in the range of 3.90‐10.87 ,and the existence of K + ,Na+ ,N H4+ , Ca2+ or Mg2+ has inhibiting effects on the adsorption .The adsorption process of PAN‐NaTS mainly fits the pseudo‐first‐order equation .In addition ,intraparticle diffusion and film diffusion control the rate of adsorption simultaneously ,and the intraparticle diffu‐sion is the main rate‐controlling step .The adsorption of Cs+ on PAN‐NaTS follows Langmuir model and is monolayer adsorption .The saturated adsorption capacity of Cs+on PAN‐NaTS is up to 219.298 mg/g .关键词
铯/钛硅酸钠/聚丙烯腈/吸附Key words
cesium/sodium titanosilicate/polyacrylonitrile/adsorption分类
化学化工引用本文复制引用
贾铭椿,杜志辉,王晓伟,门金凤..聚丙烯腈-钛硅酸钠球形复合吸附剂对 Cs ＋的吸附性能研究[J].原子能科学技术,2016,(1):31-38,8.基金项目
国家自然科学基金资助项目 （）
