Chemical Engineering seperation process

Separation Process An aqueous solution of human immunoglobulin G (at 4 degrees centigrade) is being pumped through a tube having a diameter of 1 mm. The mass transfer coefficient for the protein in the radial direction was found to be 1 x 10^-6 m/s. Comment on this value vis-a-vis the diffusivity of the protein. Estimate the eddy diffusivity of the flowing system. the molecular weight of immunoglobulin G is 155,000 kg/kg-mole (Ctrl)