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Isotherms for monovalent-divalent exchange

Equations 3 and 6, and some closely related empirical variants, have been used to fit many isotherms for monovalent-divalent exchange (23). For example, a two-parameter fit to isotherm data can be obtained by using the Rothmund-Kornfeld equation... [Pg.66]

The transformation of the equilibrium (or selectivity) constants and the ion-exchange isotherms can easily be made only for homovalent ion exchange because the ion-exchange isotherms usually do not take into consideration the heterovalent character of the ion exchange. This causes additional serious problems in the evaluation of isotherm parameters. It is shown for the exchange of monovalent and divalent cations that... [Pg.59]

Bond and Phillips (17) presented their exchange isotherm data in reference to the ratio of monovalent ion activity to divalent ion activity (e.g., iNa+ / Ca2+ 0 5) for the concentrations in the solution phase. The activity ratio,... [Pg.77]

See other pages where Isotherms for monovalent-divalent exchange is mentioned: [Pg.73]    [Pg.84]    [Pg.83]    [Pg.24]    [Pg.143]    [Pg.143]    [Pg.133]   
See also in sourсe #XX -- [ Pg.6 , Pg.66 ]

See also in sourсe #XX -- [ Pg.6 , Pg.66 ]



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