한국지하수토양환경학회:학술대회논문집 (Proceedings of the Korean Society of Soil and Groundwater Environment Conference)
- 한국지하수토양환경학회 2004년도 총회 및 춘계학술발표회
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- Pages.277-284
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- 2004
Sorption and desoption behaviors of PAHs in soil and sediments
- Wang, Qiliang (Department of Chemical Engineering, Kyungpook National University) ;
- Shin, Sik (Department of Environmental Engineering, Kyungpook National University) ;
- Song, Dong-Ik (Department of Environmental Engineering, Kyungpook National University)
- 발행 : 2004.04.01
초록
Batch experiments were conducted to investigate the sorption and desorption behaviors of PAHs (naphthalene, phenanthrene and pyrene) in soils. Three different soils montmorillonite KSF (foc =0.14%), masato (foc =0.08%), and diatomite (foc =0.007%) were investigated. The results of sorption-desorption experiment indicate that the sorption affinity of PAHs was in the order of montmorillonite > masato > diatomite. The Freundlich model was well fitted to the sorption and desorption data. Sorption affinity increased as loc increased. Desorption of PAHs from soils was biphasic composed of reversible and irreversible compartments. Desorption-resistance of phenanthrene in soils was also determined. The biphasic desorption model was used to explain desorption-resistance of phenanthrene in soils. The linear term represents reversible sorption fraction and Langmuinian-type term represents desorption-resistant fraction.