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    Author(s): Alan W. Rudie; Alan Ball; Narendra Patel
    Date: 2006
    Source: Journal of wood chemistry and technology. Vol. 26 (2006): pages 259-272.
    Publication Series: Miscellaneous Publication
    PDF: Download Publication  (156 KB)


    Ion exchange selectivity coefficients were measured for the partition of metals between solution and pulp fibers. The method accurately models the ion exchange isotherms for all cation pairs evaluated and is accurate up to approximately 0.05 molar concentrations. Selectivity coefficients were determined for calcium and magnesium with each other and with hydrogen. sodium. manganese, and barium. Measurements made at 25°, 50°, and 65°C were used to determine the enthalpy and entropy of the reactions. The data follow the expected linear free-energy relationship. These results can be used to estimate the ion exchange selectivity coefficients for any temperature within the experimental range.

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    Rudie, Alan W.; Ball, Alan; Patel, Narendra. 2006. Ion exchange of H+, Na+, Mg2+, Ca2+, Mn2+, and Ba2+, on wood pulp. Journal of wood chemistry and technology. Vol. 26 (2006): pages 259-272.


    Wood fiber, pine, ion exchange, monovalent cations, divalent cations, selectivity coefficients, hydrogen, sodium, magnesium, manganese, barium, calcium, enthalpy, entropy, water quality management, wood-pulp, bleaching, pulping, cations, water pollution, trace metals, selectivity coefficients, pulp and paper processes, closed systems

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