摘要
采用液相还原法制备了维生素B_(12)改性的纳米零价镍,并用来去除溶液中的U(Ⅵ)。探究了纳米零价镍和维生素B_(12)质量比、溶液pH、固液比、溶液中U(Ⅵ)的初始质量浓度以及温度和时间等对溶液中U(Ⅵ)去除的影响。结果表明:在室温(25℃)下,维生素B_(12)与纳米零价镍质量比1∶1,溶液pH为5.0,固液比0.3g/L,反应时间30min时,U(Ⅵ)的去除率达到98.54%,去除量达到85.36mg/g。
Nano-zero-valent nickel modified by Vitamin B_(12)was prepared by liquid phase reduction method,which was used to remove uranium U(Ⅵ)from solution.Effects of mass ratio of nanometer zero-valent nickel to Vitamin B_(12),pH value of solution,ratio of solid to liquid,initial mass concentration of U(Ⅵ)in solution,temperature,and time on removal of U(Ⅵ)in solution were investigated.The results show that removal rate of U(Ⅵ)is 98.54%and removal amount is 85.36mg/g under the conditions including mass ratio of Vitamin B_(12)to nano-nickel of 1∶1,pH value of solution of 5.0,ratio of solid to liquid of 0.3g/L,and reaction time of 30min at room temperature(25℃).
作者
付晓辉
王昱莹
何登武
王杨
李小燕
曹小岗
FU Xiao-hui;WANG Yu-ying;HE Deng-wu;WANG Yang;LI Xiao-yan;CAO Xiao-gang(State Key Laboratory of Nuclear Resources and Environment,East China University of Technology,Nanchang 330013,China)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2021年第10期90-95,共6页
Nonferrous Metals（Extractive Metallurgy)
基金
江西省自然科学基金资助项目(20171ACB2021)
国家自然科学基金资助项目(41761090,11465002)。
