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    Ion exchange equilibria involving aluminum in a kaolinitic Ultisol

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    S79ArtPleysierIonInthomNodev.PDF (3.099Mb)
    Date
    1979
    Author
    Pleysier, J.L.
    Juo, A.S.R.
    Herbillon, A.J.
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Cation exchange equilibria in an acid Ultisol profile involving K-Al, Ca-Al, K-Ca, Na-K, and Na-Ca exchanges were studied. Selectivity coefficients, surface activity coefficients and free energy changes were computed using the thermodynamic formulations. In exchange equilibria involving Al, the magnitude of selectivity coefficients Kc, was affected by pH, surface composition, and hydrolysis of Al. In equilibria not involving Al, good reversibility for K-Ca, Na-K and Na-Ca exchanges was obtained. Potassium was selectively adsorbed in all horizons of the profile. The over-all selectively sequence follows the order of K>Al>Ca≈Na.
    https://dx.doi.org/10.2136/sssaj1979.03615995004300050011x
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/1837
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.2136/sssaj1979.03615995004300050011x
    IITA Subjects
    Research Method; Soil Information; Soil Surveys And Mapping
    Agrovoc Terms
    Selectivity Coefficients; Surface Activity Coefficients; Free Energy Change; K-Al; Ca-Ai; N A-K; N A-Ca; K-Ca Exchanges; Exchange Equilibria
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Journals
    Soil Science Society of America Journal
    Collections
    • Journal and Journal Articles5283
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