A study of influence of alkali cations on dialysis rate of nickel(II) sulfate
ČlánekOtevřený přístuppeer-reviewedpublishedDatum publikování
1995
Vedoucí práce
Oponent
Název časopisu
Název svazku
Vydavatel
Univerzita Pardubice
Abstrakt
The dialysis rate of nickel(II) sulfate in a stirred bath dialyser through the cation exchange membrane Nafion 427 has been measured using aqueous solutions of alkali sulfates or sulfuric acid as a stripping solution. The influence of stirring velocity in the feed and stripping solutions on the transport rate of nickel(II) cations through the membrane has been studied. The individual values of dialysis coefficients of the membrane have been evaluated using the Wilson diagram. The time dependences of concentration of nickel(II) cations have been measured spectrophotometrically at the wavelength of 394 nm.
It has been concluded that the dialysis coefficients KMj (j = H+, K+, Na+, Li+) of the membrane depend on the character of the cations and follow the order KMH+ > KMK+ > KMNa+ > KMLi+. This order does not agree with the expected reverse order of the radii of cations. The change in the order of cations is connected with the hydration number of the cations.
Rozsah stran
p. 131-139
ISSN
1211-5541
Trvalý odkaz na tento záznam
Projekt
Zdrojový dokument
Scientific papers of the University of Pardubice. Series A, Faculty of Chemical technology. 1(1995)
Vydavatelská verze
Přístup k e-verzi
open access
Název akce
ISBN
Studijní obor
Studijní program
Signatura tištěné verze
47333-1
Umístění tištěné verze
Univerzitní knihovna (studovna)