Abstract：The laponite pillared by hydrous ceria and alumina was prepared using synthetic laponite as interlayer clay by microwave intercalation reaction method. The micro-structure of pillared laponite was characterized by FTIR, XRD, SEM, and its adsorption property of fluoride ion was investigated. Hydrous ceria and alumina could be intercalated into the structure of laponite and a layered microcrystalline structure could be formed. With the increase of mass ratio (Xm) of Ce-Al pillaring agent and laponite, the d001 value of interlayer distance of the structure was enlarged, the crystallinity was improved and the delaminated layer structures were more abundant.As the Xm and sorbent dose were increased, the adsorption rate of fluoride ion was also increased, and the adsorption isotherm of the pillared laponite to fluoride ion could be well fitted by the Langmuir equation.When the Xm was 0.1, with 0.2g/L of the sorbent, the adsorption rate reached to 90%, and the adsorption capacity reached to 13.5 mg/g within 60min,while temperature and pH value had little effects on the adsorption process.
林英光, 皮丕辉, 郑大锋, 杨卓如, 王炼石. 水合氧化铈铝柱撑锂皂石对氟的吸附性能研究[J]. 中国环境科学, 2010, 30(1): 52-57.
LIN Ying-Guang, PI Pi-Hui, ZHENG Da-Feng, YANG Zhuo-Ru, WANG Lian-Shi. Adsorption property of fluoride ion on laponite pillared by hydrous ceria and alumina. CHINA ENVIRONMENTAL SCIENCECE, 2010, 30(1): 52-57.
