Browse > Article

Model Development on the Fate and Transport of Chemical Species in Marsh Wetland Sediments Considering the Effects of Plants and Tides  

Park, Do-Hyun (Department of Energy Resources Engineering, Pukyong National University)
Wang, Soo-Kyun (Department of Energy Resources Engineering, Pukyong National University)
Publication Information
Journal of Soil and Groundwater Environment / v.14, no.6, 2009 , pp. 53-64 More about this Journal
Abstract
Wetlands can remove organic contaminants, metals and radionuclides from wastewater through various biogeochemical mechanisms. In this study, a mathematical model was developed for simulating the fate and transport of chemical species in marsh wetland sediments. The proposed model is a one-dimensional vertical saturated model which is incorporated advection, hydrodynamic dispersion, biodegradation, oxidative/reductive chemical reactions and the effects from external environments such as the growth of plants and the fluctuation of water level due to periodic tides. The tidal effects causes periodic changes of porewater flow in the sediments and the evapotranspiration and oxygen supply by plant roots affect the porewater flow and redox condition on in the rhizosphere along with seasonal variation. A series of numerical experiments under hypothetical conditions were performed for simulating the temporal and spatial distribution of chemical species of interests using the proposed model. The fate and transport of a trace metal pollutant, chromium, in marsh sediments were also simulated. Results of numerical simulations show that plant roots and tides significantly affect the chemical profiles of different electron acceptors, their reduced species and trace metals in marsh sediments.
Keywords
Mathematical model; Marsh sediments; Biogeochemical reactions; Wetland plants; Tides;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Fendorf, S.E. and Li, G., 1996, Kinetic of chromate reduction by ferrous iron, Environ. Sci. Technol., 30, 1614-1617   DOI   ScienceOn
2 Fendorf, S.E., Li, G., and Gunter, M.E., 1996, Micromorphologies and stabilities of chromium(III) surface precipitates elucidated by scanning force microscopy, Soil Sci. Soc. Am. J., 60, 99-106   DOI   ScienceOn
3 Jaffe, P.R., Wang, S., Kallin, P.L. and Smith L.S., 2002, The dynamics of arsenic in saturated porous media: fate and transport modeling for deep aquatic sediments, wetland sediments, and groundwater environments, In: R. Hellmann and S.A. Wood (eds.), Water-Rock Interactions, Ore Deposits, and Environmental Geochemistry: A Tribute to David A. Crerar, Geochemical Society, St. Louis, 379-397
4 Vanishtein, M., Kuschk, P., Mattusch, J., Vatsourina, A., and Wiessner, A., 2003, Model experiments on the microbial removal of chromium from contaminated groundwater, Water Res., 37, 1401-1405   DOI   ScienceOn
5 DiToro, D.M., 2001, Sediment Flux Modeling, John Wiley & Sons, Inc., Hoboken, NJ, p.656
6 Katz, S.A. and Salem, H., 1993, The toxicology of chromium with respect to its chemical speciation: a review, J. Appl. Toxicol., 13, 217-224   DOI   ScienceOn
7 Sand-Jensen, K., Prahl, C., and Stokholm, H., 1982, Oxygen release from roots of submerged aquatic macrophytes, Oikos, 38, 349-354   DOI
8 Choi, J.H., Park, S.S., and Jaffe, P.R., 2006, Simulating the dynamics of sulfur species and zinc in wetland sediments, Ecol. Model., 199, 315-323   DOI   ScienceOn
9 Ok, Y.S., Jung, J., Lee, H., Song, H., Jung, N., Lim, S., and Kim, J.G., 2004, Chemical characterization and bioavailability of cadmium in artificially and naturally contaminated soils, Agr. Chem. Biotechnol., 47, 143-146   ScienceOn
10 Bartlett, R.J., 1991, Chromium cycling in soils and water: links, gaps, and methods. Environ. Health Perspect., 92, 17-24   DOI   ScienceOn
11 Brix, H., Sorrell, B.K., and Schierup, H.H., 1996, Gas fluxes achieved by in situ convective flow in Phragmites australis, Aquat. Bot., 54, 151-163   DOI   ScienceOn
12 Grosse, W., 1997, Gas transport in trees, In: H. Tenneverg, W. Eschrich, and H. Ziegler (eds.), Contributions to Modern Tree Physiology, Backhuys Publishers, Leiden, 57-74
13 Armstrong, W., 1979, Aeration in higher plants. Adv. Bot. Res., 7, 225-232   DOI
14 Bedford, B.L., Bouldin, D.R., and Beliveau, B.D., 1991, Net oxygen and carbon-dioxide balances in solutions bathing roots of wetland plants, J. Ecol., 79, 943-959   DOI   ScienceOn