铀酰离子在泥炭上的吸附行为  

Adsorption of uranyl ion on peat

作　　者：文传玺[1] 刘峙嵘[1] 桑国辉[1] 

机构地区：[1]东华理工大学核工程技术学院,江西抚州344000

出　　处：《铀矿冶》2010年第2期74-77,共4页Uranium Mining and Metallurgy

基　　金：江西省青年科学家(井冈之星)培养对象计划资助(2009DQ01600)

摘　　要：采用静态吸附法研究铀酰离子在泥炭上的吸附行为,探讨固液质量体积比、振荡时间、pH、离子强度等因素对吸附的影响,并测定室温下不同离子强度时的吸附等温线。试验结果表明,pH对泥炭吸附铀酰离子的影响较大,离子强度对吸附的影响较小,吸附过程符合Freundlich方程。铀酰离子在泥炭上的吸附主要通过表面络合进行。A method of static adsorption was used to study the adsorption of uranyl ion on peat. The effects of the solid-to-liquid ratio, time, pH and ionic strength on adsorption are discussed. The adsorption isotherms of different ionic strengthes were measured under the ambient temperature. The results indicate that the adsorption of uranyl ion on peat is strongly affected by pH values and weakly dependent on ionic strength. The kinetic process of adsorption can be described by the Freundlich equation excellently. Adsorption of uranyl ion is mainly dominated by the surface complexation.

关 键 词：泥炭 铀酰离子 吸附 

分 类 号：X703.1[环境科学与工程—环境工程]