Abstract
As mentioned above (Sect. 19.1.2), changes in the physicochemical conditions in the system over space and time, which take place in unsteady-state migration flows, reduce the potential of the above-considered sorption isotherm-based models with time-invariant coefficients, in particular, models describing colloid-facilitated transport. Their empirical nature does not allow them to be applied outside of the specific parameters of the contaminated site. Therefore, thermodynamics-based approach, describing sorption as a series of specific reactions between dissolved ions and surface sites, can be more productive for analyzing solute transport under field conditions.
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Rumynin, V.G. (2011). A Thermodynamics-Based Conceptual Model for Colloid-Facilitated Solute Transport. In: Subsurface Solute Transport Models and Case Histories. Theory and Applications of Transport in Porous Media, vol 25. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-1306-2_27
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