Application of thermodynamics in a specific force field to the adsorption of Al~3+ ions on the chelating resins Ostsorb Oxin,Ostsorb Salicyl.Spheron Oxin,and Spheron Salicyl Mathematical analysis of corption isotherms using nonlinear mean square soft

摘要

The sorption mechanism of Al~3+ on chelating resins by means of mathematical analysis of sorption isotherms using nonlinear mean squar software was studied This method should yield more detalied informatinj than classical thermodynamics aned should be more flexile than the statistical-meachanical method do that it would make it possible to obtain fairly esaily relations directly applicable in practice This model defined the specific potential PSI_A1~R for the ionin a resin (which depends on properties of resin and ion).On the basis of this model N and PO isotherms were derived To study the sorption mechanism the Freundlich Langmuir N and PO equatins (models) of isotherms were used It was estimated that the function al groups (8-hydroxyquinoline and salicylate) in the studied chelatin resins influence PHI_A1~R and thus theri dmechanism and sorption capacity.