Maja Leitgeb (Author), Mateja Primožič (Author), Željko Knez (Author)

Abstract

In the studies on the stability of biocatalysts in a high-pressure batch stirred tank reactor, changes in biocatalyst activity due to pressurizationždepressurization steps were observed. An interesting alternative to overcome this inconvenience is using the high-pressure continuous membrane reactors, where just a single compression and expansion step is necessary. The aim of the research was to carry out the enzyme-catalyzed reactions in high-pressure membrane reactors. At first, high-pressure enzyme-catalyzed hydrolyses of oleyl oleate and sunflower oil were performed in a high-pressure continuous enzymatic flat-shape membrane reactor. Additionally, cellulase from Humicola insolens was covalently immobilized on tubular membrane, and enzyme-catalyzed hydrolysis of carboxy-methyl cellulose was carried out in a high-pressure continuous enzymatic tubular membrane reactor. The membrane-stability tests for flat-shape polysulfon membranes before and after treatment with supercritical CO2 or subcritical propane were done, as well.

Keywords

kemijska procesna tehnika;visokotlačna tehnologija;membranski reaktorji;biotehnologija;chemical processing;high pressure technology;membrane reactors;biotechnology;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UM FKKT - Faculty of Chemistry and Chemical Engineering
UDC: 66.09-987
COBISS: 10051862 Link will open in a new window
ISSN: 0888-5885
Views: 1220
Downloads: 65
Average score: 0 (0 votes)
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Other data

Secondary language: English
Secondary keywords: kemijska procesna tehnika;visokotlačna tehnologija;membranski reaktorji;biotehnologija;
URN: URN:SI:UM:
Pages: str. 9619-9625
Volume: ǂVol. ǂ44
Issue: 25
Chronology: 2005
ID: 8718358