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Urea is being removed at steady state from blood in a cuprophane membrane dialyzer at 37° The membrane is 0.025 mm thick and has an area of 2.0 m2.  The mass transfer coefficient on the blood side is estimated as 1.25 x 10-5 m/s and that on the aqueous side is 3.33 x 10-5 m/s. The permeability of the membrane is 8.73 x 10-6 m/s.  The concentration of urea in the blood is 0.02 g urea/100 mL and that in the dialyzing fluid will be assumed as zero.  Calculate the flux and the rate of removal of urea.

Urea is being removed at steady state from blood in a cuprophane membrane dialyzer at 37° The membrane is 0.025 mm thick and has an area of 2.0 m2.  The mass transfer coefficient on the blood side is estimated as 1.25 x 10-5 m/s and that on the aqueous side is 3.33 x 10-5 m/s. The permeability of the membrane is 8.73 x 10-6 m/s.  The concentration of urea in the blood is 0.02 g urea/100 mL and that in the dialyzing fluid will be assumed as zero.  Calculate the flux and the rate of removal of urea.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Urea is being removed at steady state from blood in a cuprophane membrane dialyzer at 37° The membrane is 0.025 mm thick and has an area of 2.0 m2.  The mass transfer coefficient on the blood side is estimated as 1.25 x 10-5 m/s and that on the aqueous side is 3.33 x 10-5 m/s. The permeability of the membrane is 8.73 x 10-6 m/s.  The concentration of urea in the blood is 0.02 g urea/100 mL and that in the dialyzing fluid will be assumed as zero.  Calculate the flux and the rate of removal of urea.

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