LIMITING FLUX IN ULTRAFILTRATION OF MACROMOLECULAR SOLUTIONS

The mass transfer equation describing the process of gel polarized ultrafiltration is solved using an integral method. A concentration profile is assumed to be an nth degree polynomial. In conventional integral method, “n”is arbitrarily assigned an integer value. In this paper we have taken the first moment of the convective diffusion equation to determine “n” as a function of the system parameters. The agreement between the closed form integral method solution and the exact numerical solution is excellent while the widely used film theory deviates considerably.