Solute Transport through Unsaturated Soil due to Evaporation
Publication: Journal of Environmental Engineering
Volume 126, Issue 9
Abstract
A new method for predicting upward solute movement in unsaturated sand soil due to evaporation is developed and tested. Laboratory experiments were conducted in an unsaturated uniformly packed sand column with a cross section of 1.20 × 0.50 m2 and a constant shallow ground-water table. Evaporation was measured by a new ventilated chamber system. Solute movement from the ground water upward was monitored. Water and solute movement could be accurately reproduced by numerically solving Richards' equation and the convection-dispersion equation in one-dimension. The experimentally measured dispersivity for the unsaturated homogeneous sand agreed closely with the values which are available in the literature. This paper offers a new approach for investigating dispersion phenomena in unsaturated porous media exposed to evaporation.
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References
1.
Abozeid, A., Watanabe, K., Ashour, M., Nashaat, A., and Ali, M. (1996). “In situ determination of the hydraulic properties of unsaturated soil.” Proc., 51st Ann. Nat. Conf., JSCE, Japanese Society of Civil Engineers, Tokyo, 3, 554–555.
2.
Anderson, M. P. (1979). “Using models to estimate the movement of contaminants through groundwater flow systems.” CRC Crit. Rev. Envir. Contr., 9, 97–156.
3.
Bear, J. (1972). Dynamics of fluids in porous media, Elsevier, New York.
4.
Boll, J., Steenhuis, T. S., and Selker, J. S. (1992). “Fiberglass wicks for sampling of water and solutes in the vadose zone.” Soil Sci. Soc. Am. J., 56, 701–707.
5.
Bresler, E., and Laufer, I. (1974). “Anion exclusion and coupling effects in nonsteady transport through unsaturated soils. 2: Laboratory and numerical experiments.” Soil Sci. Soc. Am. Proc., 38, 213–218.
6.
Brutsaert, H. (1982). Evaporation into the atmosphere, Kluwer Academic, Dordrecht, The Netherlands.
7.
De Smedt, F., and Wierenga, P. J. (1984). “Solute transfer through columns of glass beads.” Water Resour. Res., 20(2), 225–232.
8.
Freeze, R. A., and Cherry, J. A. (1979). Groundwater, Prentice-Hall, Englewood Cliffs, N.J.
9.
Fried, J. J. (1975). Groundwater pollution, Elsevier, New York.
10.
Gelhar, L. W., Welty, C., and Rehfeldt, K. R. (1992). “A critical review of data on field-scale dispersion in aquifers.” Water Resour. Res., 28(7), 1955–1974.
11.
Hadas, A., and Hillel, D. ( 1968). “An experimental study of evaporation from uniform soil columns in the presence of a water table.” Trans. 9th Int. Congr. Soil Sci., 85, 228–232.
12.
Hildebrand, M. A., and Himmelbau, D. M. (1977). “Transport of nitrate ion in unsteady unsaturated flow in porous media.” AIChE. J., 23, 326–335.
13.
Holder, M., Brown, K. W., Thomas, J. C., Zabcik, D., and Murray, H. E. (1991). “Capillary-wick unsaturated zone soil pore water sampler.” Soil. Sci. Soc. Am. J., 55, 1195–1202.
14.
Huang, K., Toride, N., and van Genuchten, M. Th. ( 1995). “Experimental investigation of solute transport in large, homogeneous, and heterogeneous, saturated soil columns.” Transport in Porous Media, 18, 283–302.
15.
Kirda, C., Nielsen, D. R., and Biggar, J. W. (1973). “Simultaneous transport of chloride and water during infiltration.” Soil Sci. Soc. Am. Proc., 37, 339–345.
16.
Krupp, H., and Elrick, D. E. (1968). “Miscible displacement in an unsaturated glass bead medium.” Water Resour. Res., 4, 809–815.
17.
Kurokawa, U., Watanabe, K., Abdel-Lah, A. K., and Yamamoto, T. (1995). “The accuracy of the new equipment for measuring evaporation and characteristics of the evapotranspiration from plants under different conditions.” J. Japan Soc. Engrg. Geol., 34(4), 27–33.
18.
Mohamed, A. A., and Watanabe, K. (1997a). “A new device for continuous recording of the heat balance at the soil surface in greenhouses.”J. Hydr. Engrg., JSCE, 41, 67–72.
19.
Mohamed, A. A., and Watanabe, K. (1997b). “Field investigation on the bare soil resistance parameters to evaporation in greenhouses.” Proc., 52nd Annu. Nat. Conf., Japanese Society of Civil Engineers, Tokyo, 3, 466–467.
20.
Mohamed, A. A., and Watanabe, K. (1997c). “Energy budget and resistance parameters to evaporation at the bare soil surface in greenhouses.” Proc., 5th Int. Conf., AEIC, Cairo, Egypt, 5, 303–314.
21.
Mohamed, A. A., Watanabe, K., and Kurokawa, U. (1997). “Simple method for determining the bare soil resistance to evaporation.” J. Groundwater Hydrol., 39(2), 97–113.
22.
Mohamed, A. A., Watanabe, K., and Sasaki, T. (1998). “Ventilated chamber system for continuous recording of both the evaporation rate and the heat balance at the bare soil surface.” J. Groundwater Hydrol., 40(2), 185–202.
23.
Molz, F. J., Güven, O., and Melville, J. G. (1983). “An examination of scale-dependent dispersion coefficients.” Ground Water, 21, 715–725.
24.
Pickens, J. F., and Grisak, G. E. (1981). “Scale-dependent dispersion in stratified granular aquifer.” Water Resour. Res., 17(4), 1191–1211.
25.
Silliman, S. E., Konikow, L. F., and Voss, C. I. (1987). “Laboratory investigation of longitudinal dispersion in anisotropic porous media.” Water Resour. Res., 23(11), 2145–2151.
26.
van Genuchten, M. Th. (1980). “A closed form equation for predicting the hydraulic conductivity of unsaturated soils.” Soil Sci. Soc. Am. J., 40, 892–898.
27.
Watanabe, K., Sakai, T., Hoshino, Y., and Hamada, S. (1995). “In-situ and laboratory tests for estimating the hydraulic properties of unsaturated rock.” Proc., 8th Int. Congr. on Rock Mech., Tokyo, 725–728.
28.
Watanabe, K., and Tsutsui, Y. (1994). “A new equipment used for measuring evaporation in a field.” Proc., 7th Int. Congr., Portugal, IAEG, 309–313.
29.
Yule, D. F., and Gardner, W. R. (1978). “Longitudinal and transverse dispersion coefficients in unsaturated plainfield sand.” Water Resour. Res., 14(4), 582–588.
30.
Zawislanski, P. T., Tokunaga, T. K., Benson, S. M., Oldfather, J. M., and Narasimhan, T. N. (1992). “Bare soil evaporation and solute movement in selenium-contaminated soils of Kesterson Reservoir.” J. Envir. Qual., 21, 447–457.
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Received: May 11, 1999
Published online: Sep 1, 2000
Published in print: Sep 2000
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