Question

Problem 3: Blood is flowing through a hollow fiber that is 800 um in diameter and 30 cm in length. The average velocity of the blood within the hollow fiber is 25 cm sec1. The concentration of a drug is maintained at 10 mg L- along the inside surface of the hollow fiber. The diffusivity of the drug in blood is 4 x 10-6 cm2 sec 1. Given: Blood viscosity 3 cP, Blood density 1.02 g/cm3 a. Estimate the mass transfer coefficient, km, for the drug. b. Assuming no drug enters the hollow fiber with the blood, estimate the exiting concentration of the drug in the blood. The short contact time solution is valid

Answer 1