云南红粘土对氟离子吸附的影响因素及特性  

FACTORS AFFECTING THE ADSORPTION OF FLUORIDE BY YUNNAN RED CLAY AND ITS CHARACTERISTICS

作　　者：邱仁敏 覃荣高[1] 曹广祝[1] 王菁 QIU Ren-min;QIN Rong gao;CAO Guang zhu;WANG Jjing(College of Land and Resources Engineering,Kunming University of Science and Technology.Kunming 650093,China)

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093

出　　处：《地质灾害与环境保护》2020年第2期100-105,共6页Journal of Geological Hazards and Environment Preservation

摘　　要：以昆明红粘土为研究对象,进行了吸附影响因素、吸附等温线和动力学研究,为云南红粘土氟污染治理和修复提供一定的理论依据。结果表明:实验条件下,红粘土在第4 h基本完成对氟离子的吸附,红粘土对氟离子的最大吸附量为980 mg/kg,而溶液温度升高以及pH值增大都不利于红粘土对氟离子的吸附。红粘土对氟离子主要的吸附作用为化学吸附,吸附主要发生于土壤颗粒表面。Taking Kunming red clay as the research object,the adsorption influencing factors,adsorption isotherms and kinetic studies were carried out,which provided a certain theoretical basis for the treatment and remediation of fluorine pollution in Yunnan red clay.The results showed that under the experimental conditions,the red clay basically completed the adsorption of fluoride ions at the 4 th hour.The maximum adsorption capacity of the red clay for fluoride ions was 980 mg/kg.However,the increase in solution temperature and the increase in pH were not conducive to the red clay’s fluoride adsorption.Adsorption of ions.The main adsorption effect of red clay on fluoride ions is chemical adsorption,which mainly occurs on the surface of soil particles.

关 键 词：红粘土 氟离子 吸附 去除率 

分 类 号：P642.15[天文地球—工程地质学] X53[天文地球—地质矿产勘探]