Journal of Hydraulic Engineering · 1984 · 109 citations · 10 references
Natural SciencesChemical EngineeringChemistryChemical KineticsPhysical ChemistryTransport PhenomenaChemical Kinetics ModelingChemical Reaction KineticsIon ExchangeKinetic ModelingSurface KineticsSurface Reaction KineticsChemical Equilibrium ModelingIon Exchange ReactionsMulticomponent AnalysisMulticomponent TransportReaction-transport ModelsReversible Chemical ReactionsReversible ReactionsSurface Complexation Kinetics
The issue of “how fast” reversible chemical reactions must be before “instantaneous equilibrium” may be assumed in ground‐water contamination problems is investigated. An example multicomponent model is used to study the requirements that must be placed on a system's Damkohler numbers to guarantee that reaction mechanisms are not kinetically limited. Analysis is presented for multicomponent transport problems using soluble complexation, ion exchange, and surface complex formation reactions. Results are presented to illustrate that instantaneous equilibrium is an excellent approximation when nondimensionalized reaction rates exceed 100.
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