Li, C, Amador, C and Ding, Y (2016) An Investigation on Dissolution Kinetics of Single Sodium Carbonate Particle with Image Analysis Method. Chinese Journal of Chemical Engineering, 24 (10). pp. 1487-1496. ISSN 1004-9541
Abstract
Dissolution kinetics of sodium carbonate is investigated with the image analysis method at the approach of single particle. The dissolution experiments are carried out in an aqueous solution under a series of controlled temperature and pH. The selected sodium carbonate particles are all spherical with the same mass and diameter. The dissolution process is quantified with the measurement of particle diameter from dissolution images. The concentration of dissolved sodium carbonate in solvent is calculated with the measured diameter of particle. Both surface reaction model and mass transport model are implemented to determine the dissolution mechanism and quantify the dissolution rate constant at each experimental condition. According to the fitting results with both two models, it is clarified that the dissolution process at the increasing temperature is controlled by the mass transport of dissolved sodium carbonate travelling from particle surface into solvent. The dissolution process at the increasing pH is controlled by the chemical reaction on particle surface. Furthermore, the dissolution rate constant for each single spherical sodium carbonate particle is quantified and the results show that the dissolution rate constant of single spherical sodium carbonate increases significantly with the rising of temperature, but decreases with the increasing of pH conversely.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved. This is an author produced version of a paper published in Chinese Journal of Chemical Engineering. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Sodium carbonate; Single particle; Dissolution rate constant; Image analysis |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 22 Dec 2016 10:40 |
Last Modified: | 08 Feb 2018 01:38 |
Published Version: | http://dx.doi.org/10.1016/j.cjche.2016.08.001 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.cjche.2016.08.001 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:109853 |