DEVELOPMENT OF A DATA BASE FOR MODELLING ADSORPTION OF INORGANICS ON IRON AND ALUMINUM OXIDES.

David A. Dzombak, Francois M.M. Morel

Research output: Contribution to conferencePaper

Abstract

Although there is an abundance of data for equilibrium adsorption of inorganic ions on hydrous oxides and surface complexation models are capable of fitting the data with only a few adjustable parameters, these models have not been used in practice because of the lack of consensus as to the 'best' model and the lack of a coherent compendium of equilibrium adsorption constants. To remedy this situation, we are developing a thermodynamic data base for inorganic adsorption from original data using a simple yet widely applicable model. The resulting data base can be included in general chemical equilibrium computer programs and used to predict adsorption in aqueous systems containing oxide surfaces, e. g. , ash ponds. Both the model and the parameter extraction procedure are presented, and results for adsorption of some cations on hydrous ferric oxide are reported and discussed.

Original languageEnglish (US)
StatePublished - Dec 1 1986

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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