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Pertinent Criteria for Describing the Dissolution of Gypsum Beds in Flowing Water¹

ABSTRACT

The equation for convective-dispersive solute transport in porous beds and the continuity equation were used to derive a relationship describing the dissolution of gypsum beds in flowing water. The parameters involved in the derived relationship were: bed length, solution flow velocity, dispersion coefficient, mass transfer rate coefficient, and gypsum fragment size. The proposed relationship was compared with previously published data and shown to be valid. A potential practical field application of the procedure is presented.

¹ Joint Contribution from Georgia Coastal Plain Exp. Stn. and Institute of Food & Agric. Sci., Univ. of Florida.

² Formerly Assistant Professor Dep. of Agronomy, Georgia Coastal Plain Exp. Stn., Tifton, GA 31794; Post-Doctoral Research Fellow, and Lab. Technologist II, Soil Sci. Dep., Univ. of Florida, Gainesville, FL 32611. Present address of the senior author is Assistant Professor, Texas A&M Univ., Agric. Research and Extension Center, Overton, TX 75684.

Received for publication April 8, 1977. Accepted for publication December 16, 1977.