期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2014
卷号：3
期号：2
页码：9302
出版社：S&S Publications
摘要：Leaching kinetics of fluoride by loading AlF3 on undisturbed vertical saline soil columns has beeninvestigated and compared using various kinetic models. Saline soils from Sambhar region of Rajasthan was selected tostudy leaching mechanism and effects of various parameters on leaching mechanism under atmospheric pressure.Linear relationship is established between the concentrations of leachable fluoride [F-]i and rate of leaching (LRobs). [F-]i and LRobs are found to decrease with increase in Na+ and Ca+2 levels of extractant, while an increase has beenobserved with increase in temperature and OH- ions. Maximum [F-]i are resulted with addition of NH4OH inpercolating water and minimum with addition of KOH. Total leachable F- was found to be unaffected by incubationtime. First Order model are found to be best fit for representing fluoride leaching in the present experimentalconditions.
关键词：Leaching Kinetics; First Order Kinetic Model; Fluoride; Pore Volume; Saturated Flow; Saline Soil; Ion;Exchange.
