磁性TiO2/GO对二元体系中U（Ⅵ）的去除效能及机理

唐振平,肖莎莎,谢严兴,毕玉玺,刘迎九,周帅

Performance and mechanism of U(Ⅵ) removal in binary system by magnetic titanium dioxide/graphene oxide composites

Zhenping Tang,Shasha Xiao,Yanxing Xie,Yuxi Bi,Yingjiu Liu,Shuai Zhou

表1 U(Ⅵ)、Cd(Ⅱ)的动力学模型拟合参数

离子种类 qe, exp/(mg·g-1) 准一级动力学 准二级动力学 颗粒内扩散 k1 qe, cal R2 k2 qe, cal R2 c kdif R2 U(Ⅵ)(二元) 31.33 0.003 25.482 0.477 0.032 31.656 0.999 34.105 0.939 0.711 Cd(Ⅱ)(二元) 26.200 0.025 11.677 0.907 0.007 26.738 0.999 67.148 0.546 0.650 U(Ⅵ)(单组分) 49.825 0.034 12.452 0.929 0.015 50.000 0.999 41.833 0.585 0.700 Cd(Ⅱ)(单组分) 47.622 0.030 6.138 0.798 0.018 47.847 0.999 37.044 0.800 0.391