M. Tomaszewska, AN EXPERIMENTAL-STUDY OF ISOTHERMAL AND NONISOTHERMAL PHENOMENA IN A HYDROPHOBIC HYDROPHILIC MEMBRANE SYSTEM, Journal of membrane science, 88(2-3), 1994, pp. 223-229
A difference in the membrane potential is observed when a membrane sep
arates two electrolyte solutions having different concentrations (conc
entration membrane potential) or are at different temperatures (therma
l membrane potential). The concentration of the solution on one side o
f the membrane was fixed at 10(-3) mol/dm3 KCl and that on the other s
ide varied from 10(-4) to 1 mol/dm3 KCl. The attained changes in the m
embrane potential of the hydrophobic-hydrophilic membrane system were
measured under isothermal and non-isothermal conditions. Simultaneousl
y, the transport of salt and the transport of water through the membra
ne system under various concentration gradients and temperature gradie
nts were studied. The influence of an externally applied voltage on th
e transport of water and salt was studied. It was found that a decreas
e of the salt flow was possible.