Modeling the co-precipitation of silica and calcium oxalate in sugar solutions
Data(s) |
31/01/2014
|
---|---|
Resumo |
Solution chemistry plays a significant role in the rate and type of foulant formed on heated industrial surfaces. This paper describes the effect of sucrose, silica (SiO2), Ca2+ and Mg2+ ions, and trans-aconitic acid on the kinetics and solubility of SiO2 and calcium oxalate monohydrate (COM) in mixed salt solutions containing sucrose and refines models previously proposed. The developed SiO2 models show that sucrose and SiO2 concentrations are the main parameters that determine apparent order (n) and apparent rate of reaction (k) and SiO2 solubility over a 24 h period. The calcium oxalate solubility model shows that while increasing [Mg2+] increases COM solubility, the reverse is so with increasing sucrose concentrations. The role of solution species on COM crystal habit is discussed and the appearance of the uncommon (001) face is explained. |
Formato |
application/pdf |
Identificador | |
Publicador |
Elsevier |
Relação |
http://eprints.qut.edu.au/63309/2/63309.pdf DOI:10.1016/j.jfoodeng.2013.08.024 East, Chris P., Fellows, Christopher M., & Doherty, William O.S. (2014) Modeling the co-precipitation of silica and calcium oxalate in sugar solutions. Journal of Food Engineering, 121, pp. 166-173. |
Direitos |
Copyright 2013 Elsevier This is the author’s version of a work that was accepted for publication in Journal of Food Engineering. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Food Engineering, [VOL 121, (2014)] DOI: 10.1016/j.jfoodeng.2013.08.024 |
Fonte |
School of Chemistry, Physics & Mechanical Engineering; Centre for Tropical Crops and Biocommodities; Institute for Future Environments; Science & Engineering Faculty |
Palavras-Chave | #030601 Catalysis and Mechanisms of Reactions #030605 Solution Chemistry #030703 Reaction Kinetics and Dynamics #039903 Industrial Chemistry #Calcium oxalate #Silica #Composite fouling #Kinetics #Crystallization #Modeling |
Tipo |
Journal Article |