Single Salt Systems Research Articles

Selective salt transport through a crosslinked poly(L‐glutamic acid) membrane for KCl/LiCl mixed systems

AbstractSelective salt transport of KCl over LiCl has been studied for a crosslinked poly(L‐glutamic acid) membrane immersed in 80 vol.‐% ethanol. The permeabilities (Ps) and solubilities were measured for various mixing ratios of the salts. The highest permselectivity (Ps (KCl)/Ps (LiCl) = 4,3) has been obtained at a LiCl mole fraction of 0,2. It is similar to that obtained in single salt systems.

Separation of simple ions by gel chromatography : I. simple model of separation for single-salt systems

The chromatographic separation of simple ions by a polymer gel in water was modelled as a liquid—liquid partition process. The model consists of two “homogeneous” phases, a mobile phase of pure eluent and a stationary (gel) phase of a structureless concentrated polymer solution with a few electric charges fixed within it. Thermodynamic considerations and a simplifying approximation yielded a simple description of single-salt systems, which accounted for the chromatographic behaviour of simple ions at low and high concentrations in a systematic fashion. The intoduced notion of “intrinsic distribution coefficients” of ions proved to be useful. The main mechanism of the separation ions is suggested to be the difference in the thermodynamic stabilities of individual ions in the two phases, rather than involving size-exclusion and adsorption effects.

Molten Salts: Vol. 5, Part 1, Additional Single and Multi-Component Salt Systems. Electrical Conductance, Density, Viscosity, and Surface Tension Data

Data on the electrical conductance, density, and surface tension of more than ninety additional multi-component salt systems have been systematically collected and evaluated. Results are given for mixtures over a range of compositions and temperatures. Values of the above properties for some sixty single salt systems are also reported.