<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>Growth kinetics of vitamin C crystals during the batch mass crystallization process in L(+)-ascorbic acid - methanol - ethanol - water system was determined. The linear growth rate values were estimated on the basis of the product crystal size distributions. The kinetic model of the continuous process in a MSMPR crystallizer was adopted for the batch mode description according to Nyvlt's conception, taking the sizedependent growth (SDG) rate effects into consideration. The kinetic parameter values were determined with a Rojkowski hyperbolic SDG model. A good compatibility between the experimental product crystal population density distributions and the SDG model predictions was observed. The interpretation of the kinetic data was presented and discussed.</p></abstract>

Growth kinetics of vitamin C crystals during the batch mass crystallization process in L(+)-ascorbic acid - methanol - ethanol - water system was determined. The linear growth rate values were estimated on the basis of the product crystal size distributions. The kinetic model of the continuous process in a MSMPR crystallizer was adopted for the batch mode description according to Nyvlt's conception, taking the sizedependent growth (SDG) rate effects into consideration. The kinetic parameter values were determined with a Rojkowski hyperbolic SDG model. A good compatibility between the experimental product crystal population density distributions and the SDG model predictions was observed. The interpretation of the kinetic data was presented and discussed.

Size-dependent growth kinetics of vitamin C crystals in water solutions of L(+)-ascorbic acid with the addition of methanol and ethanol

Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

Department of Chemical & Process Engineering, Silesian University of Technology, M. Strzody 7, 44-101 Gliwice, Poland

Polish Journal of Chemical Technology

Growth kinetics of vitamin C crystals during the batch mass crystallization process in L(+)-ascorbic acid - methanol - ethanol - water system was determined....

Size-dependent growth kinetics of vitamin C crystals in water solutions of L(+)-ascorbic acid with the addition of methanol and ethanol

Online veröffentlicht: 03. Apr. 2008

Seitenbereich: 60 - 65

DOI: https://doi.org/10.2478/v10026-008-0015-5

Schlüsselwörter
vitamin C, methanol, ethanol, batch cooling crystallizer, crystals growth rate, size-dependent growth (SDG) kinetics

This content is open access.

Size-dependent growth kinetics of vitamin C crystals in water solutions of L(+)-ascorbic acid with the addition of methanol and ethanol

Online veröffentlicht: 03. Apr. 2008

Seitenbereich: 60 - 65

DOI: https://doi.org/10.2478/v10026-008-0015-5

Schlüsselwörtervitamin C, methanol, ethanol, batch cooling crystallizer, crystals growth rate, size-dependent growth (SDG) kinetics

This content is open access.

Schlüsselwörter
vitamin C, methanol, ethanol, batch cooling crystallizer, crystals growth rate, size-dependent growth (SDG) kinetics