Dissolution Kinetics of Ulexite in Borax Pentahydrate Solutions Saturated with Carbon Dioxide

Kuslu, Soner and Çavus, Feyza and Çolak, Sabri (2009) Dissolution Kinetics of Ulexite in Borax Pentahydrate Solutions Saturated with Carbon Dioxide. In: 1st International Symposium on Sustainable Development, June 9-10, 2009, Sarajevo, Bosnia and Herzegovina.

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Abstract

The aim of the study was to investigate the dissolution kinetics of ulexite in borax pentahydrate solutions saturated with carbon dioxide in a mechanical agitation system. The effects of reaction temperature, stirring speed, CO2 flow rate, solid/liquid ratio and particle size on the rate of dissolution of ulexite were examined. It was observed that increase in the reaction temperature and decrease in the solid/liquid ratio causes an increase the dissolution rate of ulexite. The dissolution extent is not affected by the stirring speed rate in experimental conditions. The activation energy was found to be 58.7 kJ/mol. This value indicates the dissolution rate of ulexite is a chemically controlled reaction. The rate expression associated with the dissolution rate of ulexite depending on the parameters chosen may be summarized as: 1-(1-X) 1/3 = 7.4x105. D-0.8. (S/L)-0.6. W0.1. e (-58700 /R T).t

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Ulexite, Borax Pentahydrate, Dissolution Kinetics, Heterogeneous reaction
Subjects: Q Science > Q Science (General)
Depositing User: Users 4 not found.
Date Deposited: 07 Feb 2012 12:51
Last Modified: 02 Mar 2012 12:34
URI: http://eprints.ibu.edu.ba/id/eprint/495

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