Kinetics of mixed‐bed deionization: I

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<jats:title>Abstract</jats:title><jats:p>Mixed‐bed deionization of 0.0002 to 0.01N sodium chloride solutions at flow rates in the range of 3 to 70 gal./(min.) (sq. ft.) with bed depths of 0.25 to 3.2 ft. was investigated. The rate of ion exchange was found to be limited by a liquid‐film mass transfer mechanism in the high purity water range (< 1 μ micromho/cm. effluent conductivity).</jats:p><jats:p>The magnitude of the temperature effect in the range 15° to 45°C. is given. Methods for prediction of effect of both changes in particle size distribution and incomplete regeneration of the component ion exchange resins are presented. A tentative correlation is given which estimates the effect of solute and solvent species.</jats:p>

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