摘要
应用简单土壤类似物——沙粒,模拟UO22+污染土壤的过程,研究不同振荡时间、不同pH值介质、不同初始ρ(UO22+)及粒径条件对UO22+吸附的影响。随着振荡时间的延长、介质pH值增大、初始ρ(UO22+)增大、沙粒粒径减小,沙粒对UO22+吸附量也逐步增大,并拟合4种吸附动力学方程,以动力学一级方程拟合为最好。
Sand and uranyl ion were taken as a constituent to simulate the process of soil contaminated by radioelement. Influences of different duration of oscillation, pH value, initial concentration of ura- nyl ion and particle size of sand on adsorption of uranyl ion on sand were studied. The results show that longer duration of oscillation, larger pH value, thicker initial concentration and smaller size of sand are favorable for the adsorption of uranyl ion onto sand. The adsorption kinetics equation fitted the first order kinetics best among four classical kinetics models.
出处
《铀矿冶》
CAS
北大核心
2008年第2期92-95,共4页
Uranium Mining and Metallurgy
基金
教育部留学回国人员科研启动基金资助项目([2006]331)
东华理工大学博士基金(DHB0504)
核资源与环境教育部重点实验室开放基金(051104)
关键词
土壤污染
铀
沙粒
吸附
contaminated soil
uranium
sand
adsorption
