In Situ Growth Measurements of Sodium Sulfate during Cooling Crystallization

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dc.contributor.authorEgan, Timothy
dc.contributor.authorRodriguez Pascual, Marcos
dc.contributor.authorLewis, Alison Emslie
dc.date.accessioned2015-05-13T20:49:18Z
dc.date.available2015-05-13T20:49:18Z
dc.date.issued2014
dc.description.abstractCombined rainbow Schlieren deflectometry (RSD) and liquid crystal thermography (LCT) served as in situ non-intrusive techniques to determine local concentration and temperature fields based on refractive index gradients in solution during crystallization of sodium sulfate from aqueous solution. The combination of RSD with LCT allowed the decoupling of concentration and temperature effects. Convective mass transport happened during periods of fast, dendritic growth, but even higher levels occurred during the densification of the dendritic crystals, indicating significant mass deposition in this phase. The convection developed mainly as a result of concentration gradients as opposed to temperature gradients. A supersaturation field map was generated and growth kinetics of the sodium sulfate salt was determined. The kinetics followed a power law relationship, with constants in line with those in the literature.en_ZA
dc.identifier.apacitationEgan, T., Rodriguez Pascual, M., & Lewis, A. E. (2014). In Situ Growth Measurements of Sodium Sulfate during Cooling Crystallization. <i>Chemical Engineering and Technology</i>, http://hdl.handle.net/11427/12804en_ZA
dc.identifier.chicagocitationEgan, Timothy, Marcos Rodriguez Pascual, and Alison Emslie Lewis "In Situ Growth Measurements of Sodium Sulfate during Cooling Crystallization." <i>Chemical Engineering and Technology</i> (2014) http://hdl.handle.net/11427/12804en_ZA
dc.identifier.citationEgan, T., Rodriguez Pascual, M. & Lewis, A.E. (2014). In situ growth measurements of sodium sulphate during cooling crystallization. Chemical Engineering and Technology, 37 (8): 183-1290en_ZA
dc.identifier.issn0930-7516en_ZA
dc.identifier.ris TY - Journal Article AU - Egan, Timothy AU - Rodriguez Pascual, Marcos AU - Lewis, Alison Emslie AB - Combined rainbow Schlieren deflectometry (RSD) and liquid crystal thermography (LCT) served as in situ non-intrusive techniques to determine local concentration and temperature fields based on refractive index gradients in solution during crystallization of sodium sulfate from aqueous solution. The combination of RSD with LCT allowed the decoupling of concentration and temperature effects. Convective mass transport happened during periods of fast, dendritic growth, but even higher levels occurred during the densification of the dendritic crystals, indicating significant mass deposition in this phase. The convection developed mainly as a result of concentration gradients as opposed to temperature gradients. A supersaturation field map was generated and growth kinetics of the sodium sulfate salt was determined. The kinetics followed a power law relationship, with constants in line with those in the literature. DA - 2014 DB - OpenUCT DO - 10.1002/ceat.201400098 DP - University of Cape Town J1 - Chemical Engineering and Technology LK - https://open.uct.ac.za PB - University of Cape Town PY - 2014 SM - 0930-7516 T1 - In Situ Growth Measurements of Sodium Sulfate during Cooling Crystallization TI - In Situ Growth Measurements of Sodium Sulfate during Cooling Crystallization UR - http://hdl.handle.net/11427/12804 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/12804
dc.identifier.urihttp://dx.doi.org/10.1002/ceat.201400098
dc.identifier.vancouvercitationEgan T, Rodriguez Pascual M, Lewis AE. In Situ Growth Measurements of Sodium Sulfate during Cooling Crystallization. Chemical Engineering and Technology. 2014; http://hdl.handle.net/11427/12804.en_ZA
dc.languageengen_ZA
dc.publisherWiley-VCH Verlagen_ZA
dc.publisher.departmentCrystallisation and Precipitation Researchen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.rightsCopyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim*
dc.rights.urihttp://www.wiley-vch.de/publish/en/en_ZA
dc.sourceChemical Engineering and Technologyen_ZA
dc.source.urihttp://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291521-4125
dc.titleIn Situ Growth Measurements of Sodium Sulfate during Cooling Crystallizationen_ZA
dc.typeJournal Articleen_ZA
uct.subject.keywordsCooling crystallizationen_ZA
uct.subject.keywordsLiquid crystal thermographyen_ZA
uct.subject.keywordsRainbow Schlieren deflectometryen_ZA
uct.subject.keywordsSodium sulfateen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceArticleen_ZA
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