Experimental determination of hydrodynamic dispersion coefficients for heavy metals using compacted clay

2001-07-27
Camur, MZ
Yazıcıgil, Hasan
Mass transport of ions through the Ankara clay liner, which was prepared under three different compaction conditions, was studied experimentally on the basis of sorption, advection and hydrodynamic dispersion processes. Under optimum compaction conditions, effective porosity and hydraulic conductivity of the material were 0.32 and 0. 13-0.26 x 10(-8) cm s(-1), respectively. Effective diffusion coefficients of Cd, Cl, Cr, Cu, Fe, K, Mg, Mn, Ni, Pb and Zn ions were, respectively, 2.54, 9.51, 2.22, 2.85, 2.22, 7.93. 2.54, 3.08, 1.59, 3.17 and 2.54 (x 10(-6)) cm(2) s(-1). Two materials, prepared using half of the optimum water content but optimum energy conditions (II), and optimum water content but half of the optimum energy conditions (HI), have effective porosities of 0.35 and 0.40, respectively. Hydraulic conductivities of these materials were 3.1-4.38 x 10(-8) cm s(-1) and 916-1057 x 10(-8) cm s(-1). Dispersivities were 0.96 cm and 2.0 cm in materials II and III, respectively.

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Citation Formats
M. Camur and H. Yazıcıgil, “Experimental determination of hydrodynamic dispersion coefficients for heavy metals using compacted clay,” 2001, p. 283, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/66151.