葵花籽壳对溶液中铀酰离子的吸附  

Adsorptive Properties of Sunflower Seed Shells for UO_2^(2+) in Aqueous Solution

作　　者：王长福[1] 刘峙嵘[1] 薛桂荣[1] 赖毅[1] 王云[1] 周利民[1] 

机构地区：[1]东华理工大学化学生物与材料科学学院,江西南昌330013

出　　处：《核化学与放射化学》2016年第2期107-115,共9页Journal of Nuclear and Radiochemistry

基　　金：国家自然科学基金资助项目(11375043);江西省科技支撑计划资助项目(20133BBF60016;20151BBG7001)

摘　　要：选取农业副产物葵花籽壳作为吸附剂,研究其对溶液中铀酰离子的吸附性能。用元素分析、扫描电镜、红外光谱分析等方法对吸附铀前后的葵花籽壳进行分析和表征,通过静态实验分别研究了时间、温度、pH值、铀酰离子初始浓度、葵花籽壳用量等因素对吸附效果的影响。结果表明:吸附的适宜pH为5.0~6.0,35℃下,当铀溶液初始质量浓度为50mg/L,溶液pH=5.0,葵花籽壳质量浓度为1.00g/L时,饱和吸附量可达29.2mg/g。Adsorption characteristics of sunflower seed shells have been studied for U（Ⅵ）removal from aqueous solution.The sunflower seed shells were characterized by elemental analysis,scanning electron microscopy,and FT-IR.Adsorption of U（Ⅵ）from aqueous solution by means of sunflower seed shells was studied in a series of batch experiments.The adsorption behavior of U（Ⅵ）onto the adsorbent was investigated as function of pH value,contact time,initial U（Ⅵ）concentration,temperature etc.The results show that the adsorption capacity is 29.2mg/g at the pH=5.0and 35 ℃ with initial U（Ⅵ）mass concentration 50mg/L and adsorbent dose 1.00g/L.

关 键 词：葵花籽壳 铀 吸附 

分 类 号：TL941.19[核科学技术—辐射防护及环境保护]