Abstract
The effects of radial temperature gradients in circular-section columns and central-peripheral gradients in rectangular and annular columns, and lateral temperature gradients in both, normal to the electric field, are considered, taking into account the synergistic effects of gradients of resistivity due to negative temperature coefficients of resistivity of electrolyte solutions. Longitudinal temperature gradients and their interaction with radial temperature gradients in the steady and unsteady states are discussed. Consequences for distortion of separand bands, and limitations on apparatus design and choice of conditions are stated. Two methods of unlimited preparative scale-up are explained.
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