Radioisotope study of fructose adsorption at the alumina/electrolyte interface

Paweł Falkowski , Mikołaj Szafran , Ewa Skwarek , Władysław Janusz

Abstract

The mechanism, kinetic and static studies of fructose adsorption at the alumina/electrolyte interface using radiolabeled 14C-fructose were conducted. Pseudo 2nd order model of adsorption kinetics was found to fit best to adsorption as a function of time. The fructose adsorption was found to decrease with increasing pH of the solution. Considering the changes in concentration of surface groups at the alumina/electrolyte interface, the hydrogen bonding is the most probable mechanism of interaction of fructose with the surface. This is confirmed by calorimetric titration experiments because the measured heat of adsorption was 10.8 kJ/mol. For the system studied the coverage of surface by fructose was several times smaller than the monolayer.
Author Paweł Falkowski KTCh
Paweł Falkowski,,
- Chair of Chemical Technology
, Mikołaj Szafran KTCh
Mikołaj Szafran,,
- Chair of Chemical Technology
, Ewa Skwarek
Ewa Skwarek,,
-
, Władysław Janusz
Władysław Janusz,,
-
Journal seriesPhysicochemical Problems of Mineral Processing, ISSN 1643-1049 [0137-1282]
Issue year2016
Vol52
No2
Pages1011-1022
Publication size in sheets0.55
Keywords in Englishalumina, fructose, adsorption, hydrogen bonding, 14C-fructose
DOIDOI:10.5277/ppmp160238
URL http://www.ppmp.pwr.wroc.pl/sorpa/b721dbbc3f784dc2a5ae884d244ac2b6/volume
Languageen angielski
File
Physicochem. Probl. Miner. Process. 52 (2016) 1011-1022.pdf (file archived - login or check accessibility on faculty) Physicochem. Probl. Miner. Process. 52 (2016) 1011-1022.pdf 703.81 KB
Score (nominal)25
ScoreMinisterial score = 20.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) = 25.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 0.901 (2) - 2016=1.013 (5)
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