改性CoFe_(2)O_(4)对溶液中U(Ⅵ)的吸附性能研究  

Study on Adsorption Performance of Modified CoFe_(2)O_(4) for U(Ⅵ) in Solution

作　　者：杜艳军[1] 陈蓉 李小燕[1] 刘义保[1] 乐长高[1] DU Yan-jun;CHEN Rong;LI Xiao-yan;LIU Yi-bao;LE Zhang-gao(State Key Laboratory of Nuclear Resources and Environment,East China University of Technology,Nanchang 330013,China)

机构地区：[1]东华理工大学核资源与环境国家重点实验室,南昌330013

出　　处：《有色金属（冶炼部分）》2021年第8期127-133,共7页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金资助项目(41761090,11465002,11765002);江西省自然科学基金项目(20171ACB2021)。

摘　　要：以水热合成法制备CoFe_(2)O_(4)材料,考察溶液pH、固液比、时间、温度、初始U(Ⅵ)浓度等对CoFe_(2)O_(4)吸附溶液中U(Ⅵ)的影响。用扫描电镜(SEM)对材料进行表征,分析其去除U(Ⅵ)的机理。结果表明,CoFe_(2)O_(4)对U(Ⅵ)有很好的去除效果,在pH为5.5、固液比0.3g/L、反应时间120min、U(Ⅵ)溶液浓度30mg/L条件下,U(Ⅵ)最大吸附容量为73.9mg/g。CoFe_(2)O_(4) material was prepared by hydrothermal synthesis method,and influences of pH value,ratio of solid to liquid,time,temperature,and initial U(Ⅵ)concentration on U(Ⅵ)in CoFe_(2)O_(4) adsorption solution were investigated.The material was characterized by SEM and mechanism of its removal of U(Ⅵ)was analyzed.The results show that CoFe_(2)O_(4) has a very good removal effect on U(Ⅵ).The maximum adsorption capacity of U(Ⅵ)is 73.9mg/g under the conditions including pH value of 5.5,ratio of solid to liquid of 0.3g/L,reaction time of 120min,and U(Ⅵ)solution concentration of 30mg/L.

关 键 词：铁酸钴 丙烯酰胺 铀 吸附 机理 

分 类 号：X52[环境科学与工程—环境工程]