摘要
近些年来,土壤铯(Cs)污染是人们所关注的问题。本文采用静态吸附法,比较研究了中国四种典型土壤在不同温度下(288K、298K、308K)对溶液中Cs吸附的热力学特征,结果表明四种土壤对Cs均具有一定的吸附能力,且在任何温度下,其吸附量为黑土>紫色土>褐土>红壤。随着温度的提高,每种土壤对Cs的吸附量较高。四种土壤对Cs的吸附等温线均可以用Freundlich模型进行拟合。土壤有机质含量和季节温度变化可能对土壤吸附Cs产生显著影响。
In recent years,cesium(Cs)pollution in soil is of great concern.In the present research,adsorption of Cs ion from cesium chloride solution by four typical types of soils in China,black soil,purple soil,cinnamon soil and red soil,at288K,298K and308K was studied by batch experiment.The result showed that all of the soil samples adsorbed Cs,and the sequence of the adsorption capacity from high to low was:black soil,purple soil,cinnamon soil and red soil.For all four soil types,the adsorption capacity of Cs increased with the increase of temperature(288K,298K,308K).The sorption of Cs by the soil was modeled using the Freundlich isotherm model.The organic matter content of soil or seasonal temperature variation probably has a significant impact on Cs adsorption process.
作者
李玥樾
LI Yue-yue(Institute of Environment,Chengdu University of Technology,Chengdu 610059,China)
出处
《价值工程》
2019年第2期179-181,共3页
Value Engineering
关键词
土壤
铯
吸附热力学
soil
cesium
adsorption thermodynamics
