Effect of Operating Conditions on Ice Characteristics in Continuous Eutectic Freeze Crystallization

Journal Article

2014

Permanent link to this Item
http://hdl.handle.net/11427/12805
 http://dx.doi.org/10.1002/ceat.201400094
Authors
Chivavava, Jemitias
Rodriguez Pascual, Marcos
Lewis, Alison Emslie
Journal Title

Chemical Engineering and Technology


Chemical Engineering and Technology

Link to Journal
http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291521-4125
Journal ISSN
Volume Title
Publisher

Wiley-VCH Verlag

Publisher

University of Cape Town

Department
Crystallisation and Precipitation Research
Faculty
Faculty of Engineering and the Built Environment
License

http://www.wiley-vch.de/publish/en/

Series
Abstract
The efficacy of eutectic freeze crystallization (EFC) in crystallizers and in subsequent downstream washing or filtration steps is a direct function of size and morphology of the crystalline products. These product characteristics are influenced by supersaturation and residence time. To investigate the effect of residence time and supercooling on ice product characteristics in a continuous EFC process, crystallization experiments were performed in an EFC crystallizer with Na2SO4 aqueous solution. Crystal size distribution and morphology during the crystallization process were analyzed by digital image processing. Longer residence times enhanced the mean crystal size and disk-shaped ice crystals were formed. Increasing supercooling resulted in a larger mean ice equivalent diameter.
Description

Reference:

Chivavava, J., Lewis, A.E. and Rodriguez Pascual, M. (2014). Effect of operating conditions on ice quality in continuous Eutectic Freeze Crystallization. Chemical Engineering and Technology, 37(8): 1314-1320

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