Dynamic Membranes. I. Determination of Optimum Formation Conditions and Electrofiltration of Bovine Serum Albumin with a Rotating Module

Abstract
The formation conditions were determined at which four dynamic membranes, Zr(IV) oxide, calcium oleate, poly-2-vinylpyridine, and cadmium sulfide, gave the largest fluxes coupled with rejections above 80% during filtration of bovine serum albumin. These membranes were selected because they were found to be stable in the presence of a dc electric field which was imposed between a rotating filter element and a stationary housing. The effects of electric field strength, rotation rate of the cylindrical filter element, and feed concentration were determined for the four membranes formed at their optimum conditions.