原子能科学技术2017，Vol.51Issue(2)：241-247,7.DOI:10.7538/yzk.2017.51.02.0241
交联壳聚糖-亚铁氰化镍钾球形复合吸附剂制备及其对Cs+吸附性能研究
Crosslinked Chitosan-potassium Nickel Hexacyanaferrate(Ⅱ) Spherical Composite Adsorbent and Its Adsorption Property for Cs+
摘要
Abstract
Chitosan-potassium nickel hexacyanaferrate (CTS-KNiFC) spherical composite adsorbent was synthesized by combining sol-gel method with reverse phase suspension method,and its property of selective adsorption was tested.Its structures were analyzed by utilizing the techniques of FT-IR and SEM.The kinetic model analysis shows that the adsorption process of Cs+ is mainly chemical adsorption.Static adsorption experiments indicate that the equilibrium is achieved after about 5 h.When Cs+ initial concentration is more than 100 mg/L,CTS-KNiFC can reach its saturated adsorption capacity of about 70 mg/g.pH of solution and the existence of Na+ and Mg2+ have a little influence on the performance of adsorption,while the existence of NH4+ and K+ obviously inhibits the process of adsorption.In addition,intraparticle diffusion and liquid film diffusion control the rates of adsorption simultaneously,which is proved by Boyd model and Weber-Morris model analysis.The adsorption data are successfully fitted with Langmuir model which shows that adsorption of Cs+ on CTS-KNiFC is monolayer.关键词
壳聚糖/亚铁氰化镍钾/反相悬浮法/溶胶凝胶法/铯/选择性吸附Key words
chitosan/potassium nickel hexacyanaferrate/reverse phase suspension method/sol-gel method/cesium/selective adsorption分类
化学化工引用本文复制引用
梁成强,贾铭椿,杜志辉..交联壳聚糖-亚铁氰化镍钾球形复合吸附剂制备及其对Cs+吸附性能研究[J].原子能科学技术,2017,51(2):241-247,7.基金项目
国家自然科学基金资助项目(51573208) （51573208）
