Effect of pH,fulvic acid and temperature on the sorption of uranyl on ZrP_2O_7

作     者：QIAN LiJuan,HU PeiZhuo,JIANG ZhenJiang,GENG YanXia & WU WangSuo Radiochemistry Laboratory,School of Nuclear Science and Technology,Lanzhou University,Lanzhou 73000,China 

作者机构：1. Radiochemistry Laboratory School of Nuclear Science and Technology Lanzhou University Lanzhou 73000 China 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2010年第53卷第6期

页      面：1429-1437页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：supported by the National Natural Science Foundation of China (20871062  J0630962) 

主　　题：ZrP2O7 uranyl sorption desorption thermodynamic data 

摘      要：The sorption of UO22+ onto ZrP2O7 was studied using the batch technique and the point of zero charge of ZrP2O7 was obtained through mass *** results indicated that sorption of UO22+ onto ZrP2O7 was strongly affected by pH,solid-to-liquid ratio (m/V),the species of electrolyte in solution and fulvic acid (FA),but was insensitive to ionic *** sorption of UO22+ increased with increasing pH and m/*** presence of FA enhanced UO22+ sorption onto ZrP2O7 at low *** presence of phosphate or sulfate caused opposite effects on the sorption of UO22+ onto *** of citrate also significantly affected UO22+ *** sorption of UO22+ increased as the temperature of the system *** Langmuir and Freundlich models were used to simulate the sorption isotherms of UO22+ onto ZrP2O7 at different *** results indicated that the Freundlich model described UO22+ sorption better than the Langmuir *** parameters for the sorption process were calculated from the temperature dependent sorption *** results suggested that the sorption process of UO22+ onto ZrP2O7 is spontaneous and *** desorption process of UO22+ from ZrP2O7 was also investigated and it was found that sorption onto ZrP2O7 was irreversible.