The Use of Electrokinetic Potential in the Interpretation of Adsorption Phenomena. Adsorption of Salicylic Acid on Hematite (CROSBI ID 78778)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Kovačević, Davor ; Kallay, Nikola ; Antol, Ivana ; Pohlmeier, Andreas ; Lewandowski, Hans ; Narres, Hans-Dieter
engleski
The Use of Electrokinetic Potential in the Interpretation of Adsorption Phenomena. Adsorption of Salicylic Acid on Hematite
The adsorption of salicylic acid on hematite particles and their electrokinetic mobilities were measured as a function of the pH. The equilibrium in the systems was interpreted by the refined adsorption isotherm which considers the dissociation of the acid in the bulk of the solution and the electrostatic interactions between the surface and the adsorbed ions. The later was taken into account through the surface potential which was obtained from the electrokinetics using the Gouy-Chapman theory and introducing the concept of slipping plane separation. It was concluded that singly charged anions are the adsorbable species, which occupy a surface area of 87 A^2 and that adsorption equilibrium constant is logK = 3, 5. The slipping plane separation from the surface was found to be 15 A.
hematite; salicylic acid; adsorption; electrokinetics
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o izdanju
140 (1-3)
1998.
261-267-x
objavljeno
0927-7757