原子能科学技术2016，Vol.50Issue(8)：1351-1357,7.DOI:10.7538/yzk.2016.50.08.1351
新型磁性螯合聚合物的合成及其对铀吸附性能的研究
Study on Adsorption Property of Uranium Based on Novel Magnetic Chelating Polymer
摘要
Abstract
A new type,high adsorption capacity and mechanical strength and easy sepa-ration of dual amidoxime group polymer/Fe3 O4@SiO2 adsorbent was synthesized.By static adsorption experiments,the effect of pH,solid-liquid ratio,adsorption time and initial concentration of uranium on the adsorption of uranium were studied.The thermo-dynamics and kinetics of adsorption process and the relevant equation for matching were also discussed.The results show that the adsorption capacity for uranium increases with adsorbent amount,adsorption time and initial concentration of uranium,but when these factors reach a certain value,the adsorption process reaches equilibrium.The experi-mental results show that the optimal pH is 5,the optimal solid-liquid ratio is 0.6 g/L, the adsorption is basically balanced at 90 min and the initial concentration of uranium is 100 mg/L.Under this condition,the saturated adsorption capacity can reach 1 60 mg/g. The adsorption of uranium on adsorbent follows Langmuir adsorption isotherm,and is in line with quasi-second order kinetic equation.关键词
双偕胺肟基聚合物/Fe3 O4 SiO2/铀/吸附/热力学/动力学Key words
dual amidoxime group polymer/Fe3 O4 SiO2/uranium/adsorption/ther-modynamics/kinetics分类
能源科技引用本文复制引用
李广,夏良树,李瑞瑞,谢珍妮,袁小兰..新型磁性螯合聚合物的合成及其对铀吸附性能的研究[J].原子能科学技术,2016,50(8):1351-1357,7.基金项目
湖南省自然科学基金与衡阳市自然科学联合基金资助项目(14JJ5019) （14JJ5019）
湖南省高等学校科学研究重点项目资助(12A120) （12A120）
