原子能科学技术Issue(10)：1751-1756,6.DOI:10.7538/yzk.2014.48.10.1751
亚铁氰化镍对铯离子的吸附机理研究
Adsorption Mechanism Analysis of Cesium Ions in Nickel Hexacyanoferrate
摘要
Abstract
The nickel hexacyanoferrate (KNiFC) compound is often applied for the ion adsorption of cesium and strontium in low-level radioactive wastewater treatment .In this work , the co-precipitate method was used for the preparation of KNiFC using K4 Fe(CN)6 and Ni(NO3 )2 as raw materials .Then this compound was added into the aqueous solution of CsCl with a certain molar ratio .The mixture was shaken with an oscillator for completely adsorbing cesium ions in KNiFC .The morphology ,structure , adsorption stoichiometry and molar ratio of KNiFC before and after cesium ion adsorp-tion were analyzed with transmission electron microscope (TEM ) ,atomic adsorption spectrophotometer (AAS ) ,X-ray diffraction (XRD ) ,X-ray fluorescence (XRF ) and Mossbauer spectrum .The results indicate that the obtained KNiFC has a 15-20 nm crys-tal size and ellipsoidal shape .Cs+ is adsorbed mainly by exchanging with the K + in KNiFC .The phase structure of KNiFC is obviously changed after adsorption ,but still maintains a good symmetry .关键词
亚铁氰化镍/铯离子/放射性废水/吸附Key words
nickel hexacyanoferrate/cesium ion/radioactive wastewater/adsorption分类
资源环境引用本文复制引用
卿云花,康斌,戴耀东,李俊,沈舞婷..亚铁氰化镍对铯离子的吸附机理研究[J].原子能科学技术,2014,(10):1751-1756,6.基金项目
江苏省自然科学基金资助项目（BK2012799）；江苏省环保厅科研课题资助项目 （）
