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http://dx.doi.org/10.4491/KSEE.2015.37.4.234

Potential Environmental Influences in Soil by Accidental Fluorine (F) Leakage, Using Leaching Test  

Kim, Doyoung (Environmental Engineering Section, The Catholic University of Korea)
Lee, Junseok (Seoul Center, Korea Basic Science Institute, Republic of Korea)
Kwon, Eunhye (Environmental Engineering Section, The Catholic University of Korea)
Lee, Hyun A (Seoul Center, Korea Basic Science Institute, Republic of Korea)
Yoon, Hye-On (Seoul Center, Korea Basic Science Institute, Republic of Korea)
Lee, Sanghoon (Environmental Engineering Section, The Catholic University of Korea)
Publication Information
Journal of Korean Society of Environmental Engineers / v.37, no.4, 2015 , pp. 234-239 More about this Journal
Abstract
Various leaching tests were applied to the soil affected by accidental leakage of HF in an industrial area in Korea. Three different leaching methods including pH-stat, continuous batch leaching, and column tests were adopted to assess leaching characteristics and mobility of fluorine(F) in soil and the potential risks to ecosystem. Both natural and spiked samples were used for the leaching tests. F concentrations in the batch tests increased by leaching rapidly in the early stage of leaching and then maintained rather constant levels. Column leaching test also show similar result to that of the batch test. pH also controlled the leaching behavior of the soil. With increasing pH, more F was released in the pH-stat test. This is mainly due to the competition and exchange with hydroxyl ions, as pH increase to the alkaline range. Most of the F released by the accident seem to have removed in the very early stage of leaching, whereas some natural proportion from soil minerals are thought to have been released very slowly. Therefore, little F released during the accident remained, based on the results of this study on the samples after two years of the accident. We could conclude that soil contaminated by external effects such as chemical accidents should be managed immediately, especially with F.
Keywords
Fluorine; Leaching Behavior; pH-Stat Test; Continuous Batch Leaching Test; Column Test;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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