VISUALIZATION OF THE UF POLARIZED LAYER BY HOLOGRAPHIC-INTERFEROMETRY

The technique of holographic interferometry used to visualize the ultr afiltration membrane surroundings makes it possible to visualize solut e retention and verify whether or not there is cake formation on the m embrane surface during the ultrafiltration of bovine serum albumin (BS A) protein using a polyethersulfone membrane. The experimental results indicate the presence of a gelatinous mass or a filter cake during BS A ultrafiltration using the membrane mentioned. This was shown by the small concentration profile obtained from the interferometric informat ion and from direct observation of the membrane environs when the pump stopped, which showed the appearance of a gelatinous material adjacen t to the membrane.