Polyethersulfone UF membrane

Polypropylene MF membrane polyethersulfone UF membrane Acrylic transparent sheet... 

Marchese, J., Ponce, M., Ochoa, N.A., Pradanos, P., Palacio, L. and Hernandez, A. 2003. Fouling behaviour of polyethersulfone UF membranes made with different PVP. 

Higuchi ef al. (1993) initated the exploration of the protein bovine serum albumin (BSA) acting as a chirally selective complexing agent for the amino acid tryptophan in an ultraflltration system. Romero and Zydney (2001) have studied in detail the stereoselective separation of a racemic mixture of D- and L-tryptophan in a solution containing BSA via ultrafiltration. The polyethersulfone UF membrane had a MWCO of 50 000 (sufficient to hold back BSA completely). L-tryptophan preferentially binds with BSA, so less L-tryptophan is present in the filtrate. The observed UF rejection, i of the tryptophan enantiomer i molecule (mol. wt. 240) as such is essentially zero. However, the feed concentration, Ctf of the tryptophan enantiomer i is related to total feed concentration, C y, by... 

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