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Solute transport by diffusion combined with convection through a single hollow-fiber membrane fixed on an axis of a circular tube was studied precisely. Purified water and an aqueous solution of a solute were fed at constant flow rates into the circular tube and the lumen of the membrane, respectively, and oscillations with a long periodical time were observed in the concentration of solution discharged...
An apparatus was developed to measure mass transfer rate of a solute through a single hollow-fiber membrane fixed on the axis of a circular tube. Mass transfer rates of three solutes for four hemodialysis membranes were measured with the apparatus at a constant flow rate of a solution in the lumen and at various flow rates of pure water in the tube. The boundary mass transfer coefficient around...
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