Taguchi Approach and ANOVA in Optimization of the Dissolution of Colemanite in CO2 and SO2- Water Systems

Author(s): Zafer Ekinci, Esref Kurdal, Meltem Kizilca Coruh*

Journal Name: Current Physical Chemistry

Volume 10 , Issue 2 , 2020

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Graphical Abstract:


Background: Turkey is approximately 72% of the world’s boron sources. Colemanite, tincal, ulexite and pandermite are among the most significant in Turkey. Boron compounds and minerals are widely used in many industrial fields.

Objective: The main purpose of this study was to investigate the control of impurities in the boric acid production process using colemanite by carrying out the reaction with a mixture of CO2 and SO2 - water, and determining the appropriate process conditions to develop a new process as an alternative to the use of sulfuric acid. Due to worrying environmental problems, intensive studies are being carried out globally to reduce the amount of CO2 and SO2 gases released to the atmosphere.

Methods: The Taguchi method is an experimental design method that minimizes the product and process variability by selecting the most appropriate combination of the levels of controllable factors compared to uncontrollable factors.

Results: It was evaluated the effects of parameters such as reaction temperature, solid-to liquid ratio, SO2/CO2 gas flow rate, particle size, stirring speed and reaction time. The optimum conditions determined to be reaction temperature of 45°C; a solid–liquid ratio of 0.083 g.mL−1; an SO2/CO2 ratio of 2/2 mL.s−1; a particle size of -0.354+0 .210 mm; a mixing speed of 750 rpm and a reaction time of 20 min.

Conclusion: Under optimum operating conditions, 96.8% of colemanite was dissolved. It is thought that the industrial application of this study will have positive effects on the greenhouse effect by contributing to the reduction of CO2 and SO2 emissions that cause global warming.

Keywords: ANOVA, colemanite, minitab software, orthogonal array, Taguchi method, CO2 and SO2.

Tunç, M.; Kocakerim, M.M.; Küçük, Ö.; Aluz, M. Dissolution of colemanite in (NH4)2SO4 solutions. Korean J. Chem. Eng., 2007, 24(1), 55-59.
Kızılca, M.; Çopur, M. Kinetic investigation of reaction between colemanite ore and methanol. Chem. Eng. Commun., 2015, 202(11), 1528-1534.
Bayca, S.U. Microwave radiation leaching of colemanite in sulfuric acid solutions. Separ. Purif. Tech., 2013, 105(5), 24-32.
Demirkiran, N.; Kunkul, A. Dissolution kinetics of ulexite in perchloric acid solutions. Int. J. Miner. Process., 2007, 83, 76-80.
Gulensoy, H.; Kocakerim, M.M. Solubility of ulexite mineral in CO2-containing water and geological formation of this mineral. Bull. Mineral Res. Explor., 1978, 90, 1-19.
Yapici, S.; Kocakerim, M.M.; Kunkul, A. Optimization of production of H3BO3 from ulexite. Turkish J. Eng. Environ. Sci., 1990, 18, 91-94.
Alkan, M.; Kocakerim, M.M.; Çolak, S. Dissolution kinetics of colemanite in water saturated by carbon dioxide. J. Chem. Technol. Biotechnol., 1985, 35A, 382-386.
Alkan, M.; Oktay, M.; Kocakerim, M.M.; Karagölge, Z. Dissolution kinetics of some borates mineral in CO2-saturated water. Hydrometallurgy, 1991, 26, 255-262.
Kum, C.; Alkan, M.; Kocakerim, M.M. Dissolution kinetics of calcined colemanite in ammonium chloride solution. Hydrometallurgy, 1994, 36, 259-268.
Alkan, M.; Doğan, M. Dissolution kinetics of colemanite in oxalic acid solution. Chem. Eng. Process., 2004, 43, 867-872.
Künkül, A.; Yapıcı, S.; Kocakerim, M.M.; Çopur, M. Dissolution kinetics of ulexite in ammonia solutions saturated with carbon dioxide. Hydrometallurgy, 1996, 44, 135-145.
Ekmekyapar, A.; Demirkıran, N.; Künkül, A. Dissolution kinetics of ulexite in acetic acid solutions. Chem. Eng. Res. Des., 2008, 86(9), 1011-1016.
Dogan, H.T.; Yartası, A. Kinetic investigation of reaction between ulexite ore and phosphoric acid. Hydrometallurgy, 2009, 96(4), 294-299.
Ekinci, Z.; Şayan, E.; Beşe, A.V.; Ata, O.N. Optimization and modeling of boric acid extraction from colemanite in water saturated with carbon dioxide and sulphur dioxide gases. Int. J. Miner. Process., 2007, 82, 187-194.
Bese, A.V.; Borulu, N.; Copur, M.; Colak, S.; Ata, O.N. Optimization of dissolution of metals from Waelz Sintering Waste (WSW) by hydrochloric acid solutions. Chem. Eng. J., 2010, 162(2), 718-722.
Dogan, H.T.; Yartası, A. Optimization of dissolution of ulexite in phosphate acid solutions. J. Chem. Soc. Pak., 2013, 8(37), 1796-1801.
Çopur, M.; Kızılca, M.; Kocakerim, M.M. Determination of the optimum conditions for copper leaching from chalcopyrite concentrate ore using taguchi method. Chem. Eng. Commun., 2015, 202(7), 927-935.

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Article Details

Year: 2020
Published on: 19 August, 2020
Page: [88 - 97]
Pages: 10
DOI: 10.2174/1877946809666191016145837

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