RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Surface Complexation Model Details



Surface Complexation Model: Diffuse Double Layer
Acronym: DDL
Comment: Model can be regarded as the "low ionic strength, low potential" limiting case of the basic Stern model (see [WH80]). In older literature it is often called "simple Gouy-Chapman model". The total charge of the surface layer T(sigma) is fixed by theory, so no extra electrostatic model parameter is needed. This approach is in valid up to ionic strengths of 0.1 M. The term "Generalized Two-Layer Model" coined by Dzombak and Morel is actually a DDL including surface precipitation at high sorbate/sorbent ratios.
 
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