Saturated Hydraulic Conductivity Changes with Time and Its Prediction at SAR and Salinity in Quevedo Region Soils


Darcy’s law is applied to describe the steady flow processes in which the flux remains constant with time along the conducting system. Due to the dispersion and migration of colloidal particles and lodging in the soil pores the reduction in hydraulic conductivity occurs with time in particular when the soil and the percolating solution are affected by electrolyte concentration. Hence, the aim of this study is to find empirical equations that can be used to predict the flux with time. Data for the effluent volume versus time (up to 6 hours) which was collected for three soils (located at Quevedo-Los Rios region) treated by two salt solutions (5 and 50 meq/l) with different SAR values were used to test certain mathematical forms of equations. Only four empirical equations were found to perfectly fit the data (flux vs time) whereas, fitting the calculated and measured data of the hydraulic conductivity for all soils produced regression factors R2 ≥ 0.99. So, these equations can be applied to predict the hydraulic conductivity and to characterize the flow process at saturated conditions of the studied soils with great confidence. The Hoerl function model was the best of all equations for application as the fitting degrees were almost perfect for all studied soils at 5 and 50 meq/l. It was observed for all equations that one of the fitting parameters would always represent the initial hydraulic conductivity (Kos) that was evaluated graphically at zero time by extrapolation.

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Amer, A. , Suarez, C. , Valverde, F. , Carranza, R. , Matute, L. and Delfini, G. (2014) Saturated Hydraulic Conductivity Changes with Time and Its Prediction at SAR and Salinity in Quevedo Region Soils. Journal of Water Resource and Protection, 6, 1561-1573. doi: 10.4236/jwarp.2014.617143.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Amer, A.M. (2012) Water Flow and Conductivity into Capillary and Non-Capillary Pores of Soils. Journal of Soil Science and Plant Nutrition, 12, 99-112.
[2] Amer, A.M. (2011) Prediction of Hydraulic Conductivity and Sorptivity in Soils at Steady-State Infiltration. Archives of Agronomy and Soil Science, 58, 1179-1194.
[3] Hillel, D. (1980) Fundamental of Soil Physics. Academic Press, New York.
[4] Dikinya, O., Christoph, H. and Graham, A. (2008) Decrease in Hydraulic Conductivity and Particle Release Associated with Self-Filtration in Saturated Soil Columns. Geoderma, 146, 192-200.
[5] Pupinsky, H. and Shainberg, I. (1979) Salt Effects on the Hydraulic Conductivity of a Sandy Soil. Soil Science Society of America Journal, 43, 429-433.
[6] Metzger, L., Yaron, B. and Mingelgrin, U. (1983) Soil Hydraulic Conductivity as Affected by Physical and Chemical Properties of Effluents. Agronomie, 3, 771-778.
[7] Yousaf, M., Ali, O.M. and Rhoades, J.D. (1987) Clay Dispersion and Hydraulic Conductivity of Some Salt-Affected Arid Land Soils. Soil Science Society of America Journal, 51, 905-907.
[8] Keren, R. and Singer, M.J. (1988) Effect of Low Electrolyte Concentration on Hydraulic Conductivity of Sodium/Calcium Montmorillonite-Sand System. Soil Science Society of America Journal, 52, 368-373.
[9] Aringhieri, R. and Capurro, M. (1994) Evaluating Saturated Hydraulic Conductivity of a Soil in Laboratory Investigations: An Empirical Model. Soil Science, 157, 77-83.
[10] Frenkel, H., Goertzen, J.O. and Rhoades, J.D. (1978) Effects of Clay Type and Content, Exchangeable Sodium Percentage, and Electrolyte Concentration on Clay Dispersion and Soil Hydraulic Conductivity. Soil Science Society of America Journal, 42, 32-39.
[11] Felhender, R., Shainberg, I. and Frenkel, H. (1974) Dispersion and Hydraulic Conductivity of Soils in Mixed Solutions. Transactions on the 10th International Congress of Soil Science, 1, 103-112.
[12] Shainberg, I., Rhoades, J.D. and Prather, R.J. (1981) Effect of Low Electrolyte Concentration on Clay Dispersion and Hydraulic Conductivity of a Sodic Soil. Soil Science Society of America Journal, 45, 273-277.
[13] Black, G.A., Evans, D.D., White, J.L., Ensminger, L.E. and Clerk, F.E. (1965) Methods of Soil Analysis. Parts, 1 and 2. American Society of Agronomy, Madison.
[14] Klute, A. (1986) Methods of Soil Analysis. 2nd Edition, ASA and SSSA, Madison.
[15] Santiwong, S.R., Guan, J. and Waite, T.D. (2008) Effect of Ionic Strength and pH on Hydraulic Properties and Structure of Accumulating Solid Assemblages during Microfiltration of Montmorillonite Suspensions. Journal of Colloid and Interface Science, 317, 214-227.
[16] Levy, G.J. and Mamedov, A.I. (2002) High-Energy-Moisture-Characteristics Aggregate Stability as a Predictor for Seal Formation. Soil Science Society of America Journal, 66, 1603-1609.
[17] Wissmeier, L. and Barry, D.A. (2009) Effect of Mineral Reactions on the Hydraulic Properties of Unsaturated Soils: Model Development and Application. Advances in Water Resources, 32, 1241-1254.
[18] Arienzo, M., Christen, E.W., Jayawardane, N.S. and Quayle, W.C. (2012) The Relative Effects of Sodium and Potassium on Soil Hydraulic Conductivity and Implications for Winery Wastewater Management. Geoderma, 174, 303-310.
[19] Amer, A.M. (2012) Infiltration Functions for Prediction of Water Sorptivity and Hydraulic Conductivity in Soils. Proceedings of the BALWOIS Conference, Ohrid, 28 May-2 June 2012.
[20] Brooks, R.H. and Corey, A.T. (1964) Hydraulic Properties of Porous Media. Hydrology Paper 3, Colorado State University, Fort Collins.
[21] Jayawardane, N.S., Christen, E.W., Arienzo, M. and Quayle, W.C. (2011) Evaluation of the Effects of Cation Combinations on Soil Hydraulic Conductivity. Australian Journal of Soil Research, 49, 56-64.

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