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2012 | 33 | 1 | 167-183
Article title

Experimental and numerical investigation of electrostatic spray liquid-liquid extraction with ionic liquids

Content
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EN
Abstracts
EN
A new concept of an electrostatic spray column for liquid-liquid extraction was investigated. An important problem for separation processes is the presence of azeotropic or close-boiling mixtures in their production, for example heptane with ethanol, since the separation is impossible by ordinary distillation. The use of ionic liquids (IL) as a dispersed solvent specially engineered for any specific organic mixture in terms of selectivity is a key factor to successful separation. As IL present particularly attractive combination of favorable characteristics for the separation of heptane and ethanol, in this work we use 1-butyl-3-methylimidazolium methyl sulfate [BMIM][MeSO4]. Because of high viscosity and relatively high cost of IL a new technique was introduced, consisting in the electrostatically spray generation to enhance the mass transport between the phases. In order to optimally design the geometry of the contactor a series of numerical simulation was performed. Especially multi-nozzle variants for better exploitation of contactor volume were investigated. Experiments showed excellent possibility of control of the dispersion characteristics by applied voltage and thus control of the rate of extraction. The preliminary simulations based on our mathematical model for a three nozzle variant exhibited visual agreement with the theory of electrostatics.
Publisher

Year
Volume
33
Issue
1
Pages
167-183
Physical description
Dates
published
1 - 3 - 2012
online
22 - 3 - 2012
Contributors
  • Faculty of Process and Environmental Engineering, Technical University of Lodz, ul. Wólczańska 213, 90-924 Łódź, Poland
  • Faculty of Process and Environmental Engineering, Technical University of Lodz, ul. Wólczańska 213, 90-924 Łódź, Poland
author
  • Faculty of Process and Environmental Engineering, Technical University of Lodz, ul. Wólczańska 213, 90-924 Łódź, Poland
References
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  • Ahosseini A., Scurto A. M., 2008. Viscosity of imidazolium-based ionic liquids at elevated pressures: Cation and anion effects. Int. J. Thermophysics, 29, 1222-1243. DOI: 10.1007/s10765-008-0497-7.[WoS][Crossref]
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  • Fernandez A., Garcia J., Torrecilla J. S., Oliet M., Rodriguez F., 2008. Volumetric, transport and surface properties of [bmim][MeSO4] and [emim][EtSO4] ionic liquids as a function of temperature. J. Chem. Eng. Data, 53, 1518-1522. DOI: 10.1021/je8000766.[Crossref]
  • Foco G. M., Bottini S. B., Quezada N., de la Fuente J. C., Peters C. J., 2006. Activity coefficients at infinite dilution in 1-alkyl-3-methylimidazolium tetrafluoroborate ionic liquids, J. Chem. Eng. Data, 51, 1088-1091, DOI: 10.1021/je050544m.[Crossref]
  • Holbrey J. D., Reichert W. M., Swatloski R. P., Broker G. A., Pitner W. R., Seddon K. R., Rogers R. D., 2002. Efficient, halide free synthesis of new, low cost ionic liquids: 1,3-dialkylimidazolium salts containing methyland ethyl-sulfate anions. Green Chem, 4, 407-413. DOI: 10.1039/b204469b.[Crossref]
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  • Kamiński K., Bachtel A., Petera J., 2010. High voltage electro-spray extraction from organic mixture using room temperature ionic liquids, Inż. Aparat. Chem., 2, 61-62 (in Polish).
  • Pereiro A. B., Rodriguez A., 2008. Azeotrope-breaking using [BMIM] [MeSO4] ionic liquid in an extraction column. Sep. Purif. Technol., 62, 733-738. DOI: 10.1016/j.seppur.2008.03.015.[WoS][Crossref]
  • Petera J., Weatherley L. R., Hume A. P., Gawrysiak T., 2007. A finite element algorithm for particle/droplet trajectory tracking, tested in a liquid-liquid system in the presence of an external electric field. Comp. Chem. Eng., 31, 1369-1388. DOI: 10.1016/j.compchemeng.2006.11.010.[Crossref]
  • Petera J., Weatherley L. R., Rooney D., Kaminski K., 2009. A finite element model of enzymatically catalyzed hydrolysis in an electrostatic spray reactor, Comp. Chem. Eng., 144-161, DOI: 10.1016/j.compchemeng.2008.07.006.[Crossref]
  • ChemicalBook. Retrieved 08.09.2011 from
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.-psjd-doi-10_2478_v10176-012-0015-0
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