TY - JOUR
T1 - On the mechanism of separation of ethanol/water mixtures by pervaporation II. Experimental concentration profiles
AU - Mulder, M.H.V.
AU - Franken, A.C.M.
AU - Smolders, C.A.
PY - 1985
Y1 - 1985
N2 - Ethanol—water concentration profiles in cellulose acetate membranes were measured under steady-state pervaporation conditions. Knowledge of these profiles leads to a better understanding of the diffusion process during pervaporation. The concentration profiles were determined by a film-stack method, using three to six layers. It is shown that permeation of ethanol—water mixtures proceeds in a coupled way and that crossterm diffusion coefficients need to be considered. Furthermore, the occurrence of sorption resistances at the feed/membrane interface can be established from these experiments
AB - Ethanol—water concentration profiles in cellulose acetate membranes were measured under steady-state pervaporation conditions. Knowledge of these profiles leads to a better understanding of the diffusion process during pervaporation. The concentration profiles were determined by a film-stack method, using three to six layers. It is shown that permeation of ethanol—water mixtures proceeds in a coupled way and that crossterm diffusion coefficients need to be considered. Furthermore, the occurrence of sorption resistances at the feed/membrane interface can be established from these experiments
KW - IR-67234
U2 - 10.1016/S0376-7388(00)83133-6
DO - 10.1016/S0376-7388(00)83133-6
M3 - Article
VL - 23
SP - 41
EP - 58
JO - Journal of membrane science
JF - Journal of membrane science
SN - 0376-7388
IS - 1
ER -