土壤对碱性高氟水的氟吸附研究  

THE STUDY ON ADSORPTION OF FLUORIDE IN ALKALINE WATER BY SOILS

作　　者：杨军耀[1] 李扭串[2] 

机构地区：[1]太原工业大学水利系 [2]水利电力部山西省水利勘测设计院

出　　处：《中国地质灾害与防治学报》1997年第1期46-50,共5页The Chinese Journal of Geological Hazard and Control

基　　金：国家自然基金;地矿部学科生长点项目

摘　　要：为了讨论高氟地下水灌溉区的土壤氟吸附规律，本文研究了北方弱碱性土壤对碱性高氟水的氟吸附现象。等温吸附试验资料与等温吸附线拟合结果表明：弱碱性土壤对碱性高氟水的氟吸附不符合Ｌａｎｇｍｕｉｒ方程。而符合线性等温吸附方程、Ｆｒｅｕｎｄｌｉｃｈ方程和ＤｕｂｉｎｉｎＲａｄｕｓｈｋｅｖｉｃｈ方程，弱碱性土壤对碱性高氟水的最大氟吸附量可以用ＤｕｂｉｎｉｎＲａｄｕｓｈｋｅｖｉｃｈ方程：Ｓ＝Ｓｍａｘｅｋ〔ｌｎ（１＋１／ｃ）〕２来确定。This paper deal with the adsorption of fluoride in alkaline water by soils to approach adsorption of fluoride by soils in the area of agricultural irrigation with high F groundwater. On the basis of the characteristics of adsorption isotherm, Langmuir equation doesn′t fit for the experimental data, but linear, Freundlich and Dubinin Radushkevich equation fits for it. The adsorption maximum can be obtained by Dubinin Radushkevich equation: S=S max e k ln(1+1 C ) 2 . It is significant for the study on the fluoride environmental problem which resulted from agricultural irrigation with high F groundwater.

关 键 词：土壤 碱性氟水 氟 吸附 

分 类 号：S151.9[农业科学—土壤学]