토양 내 철의 이동특성에 관한 연구

A Study on Transport Characteristics of Fe in Soil

  • Cho, Ki-Chul (Department of Environmental Engineering, Pusan National University) ;
  • Lee, Kyeong-Ho (SUDOKWON Landfill Site Management Corp.) ;
  • Choung, Young-Heon (Department of Environmental Engineering, Pusan National University) ;
  • Cho, Sang-Won (Department of Environmental Chemistry, Daegu Polytechnic College) ;
  • Oh, Kwang-Joong (Department of Environmental Engineering, Pusan National University)
  • 발행 : 2005.10.31

초록

이류-확산 국부적 평형흡착모델(convection-dispersion local equilibrium sorption model)과 Two-site 비평형 흡착모델(non-equilibrium sorption model)을 이용하여 철(Fe)의 토양 내 흡착 및 이동특성을 살펴보았다. 회분실험에서는 철의 주입농도를 변화시키면서 시간에 따른 농도변화를 측정함으로써 철의 흡착특성을 선형흡착등온선과 Freundlich 흡착등온선으로 살펴보았으며, 칼럼실험에서는 주입유속, 유기물함량, 철의 농도를 변화시키면서 주입액과 유출액의 철의 농도를 측정하고, CXTFIT 프로그램을 이용하여 two-site 비평형 흡착 모델에 사용된 매개변수(D, R, ${\beta}$, ${\omega}$)를 구하였다. CXTFIT 프로그램에 의해 구하여진 매개변수들을 이용하여 철의 토양 내 이동특성을 살펴보았으며, 철과 같은 흡착성 물질의 이동특성은 two-site 비평형 흡착모델에 의해 예측할 수 있음을 알 수 있었다.

In this stduy, adsorption and transport characteristics of Fe in the soil were investigated using convection-dispersion local equilibrium sorption model and two-site non-equilibrium sorption model. In batch experiments with different Fe concentration, characteristics of Fe adsorption was investigated using Freundlich and linear isotherm. Column experiments with different flow rate, organic matter content md Fe concentration were also carried out. We measured Fe concentrations in injection-liquid and in effluent, and then applied them to CXTFIT program. As a result of column experiments, some parameters(D, R, ${\beta}$, ${\omega}$) used in two-site non-equilibrium adsorption model were obtained. Characteristics of Fe transport were analyzed using the parameters(D, R, ${\beta}$, ${\omega}$) obtained from the CXTFIT program, Consequently, characteristics of Fe transport in the soil were predicted through two-site non-equilibrium adsorption model.

키워드

참고문헌

  1. Materials Transactions JIM v.37 no.3 Physical Chemistry of Some Slag and Glass Systems Useful in Recycling Meadowcroft, T.R.;Ionescu, D.;Barr, P.V.;Murphy, J.N. https://doi.org/10.2320/matertrans1989.37.532
  2. 한국환경과학회지 v.6 혐기성 조건에서 FeS의 흡착거동연구 김정배
  3. Environ. Sci. Technol. v.31 Nonequilibrium transport of reactive solutes through layered soil profiles with depth-dependent adsorption Lei Guo;Robert, J.;Wagenet;John, I. https://doi.org/10.1021/es960944h
  4. J. Contam. Hydrol. v.34 Sorption kinetics of PAHs in methanol-water system Bouchard, D.C. https://doi.org/10.1016/S0169-7722(98)00094-1
  5. The CXTFIT code for estimating transport parameters from laboratory and field tracer experiments, Version 2.0 US Salinity Lab Research Report No. 137 Toride, N.;Leij, F.J.;Van Genuchten, M.Th.
  6. Soil Sci. Soc. Am. J. v.44 Experimental and mathematical description of non-adsorbed solute transfer by diffusion in spherical aggregates Rao, P.S.C.;Jessup, R.E.;Rolston, D.E.;Davidson, J.M.;Kilcrease, D.P. https://doi.org/10.2136/sssaj1980.03615995004400040004x
  7. Pestic. Sci. v.55 Sorption of vinclozolin and atrazine on four geosorbents Bouchard, Dermont C. https://doi.org/10.1002/(SICI)1096-9063(199911)55:11<1095::AID-PS61>3.0.CO;2-7
  8. Geoderma v.84 Anomalous cadmium adsorption in flow interruption experiments Tran, Y.T.;Bajracharya, K.;Barry, D.A. https://doi.org/10.1016/S0016-7061(97)00127-4
  9. Soil Sci. v.135 Sorption process in soils as influenced by pore water velocity : II. Experimental results Akratanakul, S.;Boersma, L.;Klock, G.O. https://doi.org/10.1097/00010694-198306000-00001
  10. Transport of Cadmium in Soil Bajracharya, K.
  11. J. Contam. Hydrol. v.31 Nonlinear sorption and nonequilibrium solute transport in aggregated porous media : Experiments, process identification and modeling Fesch, Claudia;Werner, Simon;Stefan, B.;Haderlein, Peter Reichert;Schwarzenbach, Rene P. https://doi.org/10.1016/S0169-7722(97)00078-8
  12. J. Contam. Hydrol. v.36 Non-equilibrium transport of Cd in alluvial gravels Liping Pang;Close, Murray E. https://doi.org/10.1016/S0169-7722(98)00110-7
  13. Pestic. Sci. v.46 Non-equilibrium sorption during the movement of pesticides in soils Baskaran, S.;Bolan, N.S.;Rahman, A.;Tillman, R.W. https://doi.org/10.1002/(SICI)1096-9063(199604)46:4<333::AID-PS361>3.0.CO;2-A