江西农业大学学报Issue(2)：363-368,6.DOI:10.13836/j.jjau.2015056
介孔氧化硅SBA-15对铯的吸附性能研究
Sorption Characteristics of Cesium onto Mesoporous Silica SBA-15
摘要
Abstract
SBA⁃15 is a porous silicon molecular sieve with large aperture and good thermal stability. It shows a promising prospect in the field of separation. In this study,mesoporous silica SBA⁃15 was synthesized and employed to investigate cesium sorption from aqueous solution. The synthesized SBA⁃15 was characterized with TEM and FTIR.The effects of pH,cesium initial concentration,adsorbent dosage,contact time and ionic strength on the sorption of cesium were studied in details.The experimental results showed that the sorption e⁃quilibrium could be achieved in 120 min at pH=6.The cesium sorption capacity was found to be 26.31 mg/g at the cesium initial concentration of 40 mg/L.The sorption isotherm and kinetics were investigated.The sorp⁃tion equilibrium data was well fitted with Langmuir isotherms,and the sorption kinetics was well defined by the Pseudo⁃first⁃order model.关键词
SBA-15/铯/吸附性能Key words
SBA-15/cesium/sorption分类
化学化工引用本文复制引用
江玲,龚霞,刘淑娟,马建国,罗明标,林海禄,丁志昆..介孔氧化硅SBA-15对铯的吸附性能研究[J].江西农业大学学报,2015,(2):363-368,6.基金项目
国家自然科学基金（21367001）、江西省教育厅基金（GJJ13471）、东华理工大学核资源与环境重点实验室开放基金（101119）、放射性地质与勘探技术国防重点学科实验室项目（2011RGET012，2011RGET015）和国家留学基金委2014国家公派高级研究学者及访问学者（含博士后）项目 （）
