M. Higa et al., TRANSPORT OF IONS ACROSS BIPOLAR MEMBRANES .2. MEMBRANE-POTENTIAL ANDPERMEABILITY COEFFICIENT RATIO IN CACL2 SOLUTIONS, JOURNAL OF PHYSICAL CHEMISTRY B, 101(13), 1997, pp. 2321-2326
The simulations and the experimental data of ionic transport across a
bipolar membrane in dialysis systems of a 2-1 type salt, where ''2-1 t
ype'' means a combination of a bivalent cation and a univalent anion,
show that the transport properties of a 2-1 type salt in the system ha
ve features different from those of a 1-1 type. (univalent cation and
univalent anion) salt in the following points: (1) the potential of a
2-1 type salt system has a constant value irrespective of the charge d
ensity ratio of the two charged layers when the membrane charge densit
ies are much larger than the concentration of the salt solutions; (2)
the potential-concentration curves have a peak under suitable conditio
ns; (3) the permeability coefficient of the salt has a different value
between two dialysis systems where the direction of the positive-nega
tive layered structure of the membrane is reversed even if the mobilit
y of the cation is the same as that of the anion.