Mojca Škerget (Author), Željko Knez (Author)

Abstract

In present work the feasibility of using supercritical fluid chromatography (SFC) for separation of free fatty acids (FFA) and triglycerides has been examined. Lipids such as oleic acid and sunflower oil (containing 96% of triglycerides) were used; adsorption and desorption on adsorbents such as silica gel and neusilin using supercritical CO2 as mobile phase was investigated. The experiments were performed at 40 °C and in the pressure range from 13 to 30 MPa. Adsorption kinetic lines were determined by analysingbreakthrough curves. Several parameters such as rate of adsorption and desorption, loading, desorbed quantity and diffusion coefficients in solid phase were calculated.

Keywords

supercritical fluid chromatography;lipids;oleic acid;triglycerides;adsorption;desorption;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UM FKKT - Faculty of Chemistry and Chemical Engineering
UDC: 66-987
COBISS: 12002326 Link will open in a new window
ISSN: 1318-0207
Views: 1850
Downloads: 85
Average score: 0 (0 votes)
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Other data

Secondary language: Slovenian
Secondary abstract: Raziskali smo uporabnost postopka superkritične kromatografije (SFC) za separacijo prostih maščobnih kislin (FFA) in trigliceridov. V eksperimentih adsorpcije in desorpcije na silikagel in neusilin smo uporabili oleinsko kislino in sončnično olje, ki je vsebovalo 96 % trigliceridov. Kot mobilno fazo smo uporabili superkritični $CO_2$ pri 40 °C in v območju tlakov od 13 do 30 MPa. Študirali smo kinetiko adsorpcije in desorpcije in določili parametre kot so adsorpcijska in desorpcijska hitrost, adsorbirana in desorbirana množina substance ter difuzijske koeficiente substanc v trdni fazi (adsorbentu).
Secondary keywords: superkritična tekočinska kromatografija;lipidi;trigliceridi;adsorpcija;desorpcija;
URN: URN:NBN:SI
Type (COBISS): Scientific work
Pages: str. 688-692
Volume: ǂVol. ǂ54
Issue: ǂno. ǂ4
Chronology: 2007
Keywords (UDC): applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;chemical technology;chemical and related industries;kemijska tehnologija;kemijske in sorodne industrije;
ID: 1437554
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