Diffusion of gases in electrolytic solutions

Abstract

Measurements of the diffusion coefficients of hydrogen and methane instrong aqueous electrolytes have been made with the use of the diaphragm cell method. The variation of the diffusion coefficients with electrolyte concentration, type of ion, and temperature hos been studied over the electrolyte concentration range zero to saturated, and for temperatures in the range f Calculated from data of McCall and Douglass (11 ) for self-diffusion taken as being the average of the values for hydrogen and methane.of water.

Characterization of potassium glycinate for carbon dioxide absorption purposes

“…The diffusion coefficient of CO 2 in solution is determined using the so-called N 2 O : CO 2 analogy (Gubbins et al, 1966):…”

“…The diffusion coefficient of N 2 O in solution was estimated using a modified Stokes-Einstein relation and the CO 2 diffusion coefficient in solution was estimated using the so-called N 2 O : CO 2 analogy (Gubbins et al, 1966).…”

Carbon dioxide absorption kinetics in potassium threonate

“…= 0.8 can be considered to estimate the diffusion coefficient of N 2 O in the aqueous solutions of potassium threonate (Versteeg and Van Swaaij, 1988;Joosten and Danckwerts, 1972;Brilman et al, 2001) and = 0.6 to estimate the diffusion coefficient of the amino acid salt in solutions (Versteeg and Van Swaaij, 1988;Snijder et al, 1993). Gubbins et al (1966) found that the ratio of the diffusivity of a gas in an electrolyte solution to the diffusivity of the same gas in water does not vary significantly with the nature of the diffusant. Therefore, it is reasonable to use the so-called N 2 O analogy to estimate the diffusion coefficient of CO 2 in solutions.…”

Simultaneous measurements of oxygen diffusion coefficients and solubilities in fermentation media with polarographic oxygen electrodes

“…The oxygen transmissibilities, D,k,, for the test glucose solutions can be determined by using eq. (13) (42) Except in highly viscous non-Newtonian solutions, the value of n has been found to vary from 0. 5 It appears that the present experimental results accord well with the literature data.…”