Fouling of an ultrafiltration membrane by a dissolved whey protein concentrate and some whey proteins
Journal of Membrane Science 36: 147-160
The influence of adsorption on the pure water flux through a polysulphone membrane was determined using whey protein concentrate (LACPRODAN 80), beta -lactoglobulin and alpha -lactalbumin as solutes. Flux decreases as concentration of the solution in contact with the membrane increases; there is also a dependence on pH and buffer. The adsorption process followed the same pattern for the different proteins. The amount of beta -lactoglobulin adsorbed on the surface was determined using 14C-labelled protein. Flux of the commercial membrane sheets which were used varied between 0.007 and 0.220 g cm-2 min-1.