Liquid-liquid extraction of barium with DEPHA: chemical equilibrium
DOI:
https://doi.org/10.17533/udea.redin.343264Keywords:
barium, heavy metals, liquid–liquid extraction, DEPHAAbstract
The objective of this work was to evaluate a liquid - liquid extraction process to separate barium in aqueous phase by means of an organic phase consisting of DEPHA (bis-2-ethylhexyl phosphate) in kerosene and isopropyl alcohol as modifying agent. Different variables were studied: a) metal concentration in the liquid phase, b) pH of the solution, c) concentration of the organic carrier and d) ratio of the organic to aqueous phase volume. A recovery efficiency of 89.5% was obtained using an organic solution based on DEPHA, 30% (V/V) and isopropyl alcohol, 30% (V/V) as selective extraction medium. The extraction of barium occurs at pH 11. A solution containing 100 mg/L of BaCl2.2H2O was used as aqueous phase. The chemical equilibrium present in the system was described and the parameter KqE = 0.338 was obtained. This parameter is useful for establishing the viability of the industrial barium separation process in the aqueous phase.
Downloads
References
World Health Organization. Barium environmental health criteria. N.o 107. IPCS. 1990. p. 148.
J. I. Mogollón, R. Rodríguez, V. Larrota, R. Torres. “Remoción biológica de bario de aguas de producción utilizando asociaciones microbianas estratificadas”. Ciencia Tecnología y Futuro. Vol. 1. N.o 2. 1996. pp. 35-41. DOI: https://doi.org/10.29047/01225383.596
J. Medina, E. Silva. Filtro biológico para la depuración del bario en las lagunas de estabilización de una estación de recolección de crudo. Universidad Industrial de Santander. Bucaramanga, Colombia. 1993. p. 38.
C. L. Hawes, “Simple method finds Barium in oil-field brisnes”, Oil & Gas Journal, 1985, pp. 130-132.
J. Groso, V. Restrepo y L. Sánchez. “Evaluación preliminar de la participación de especies de mangle en el control de metales pesados en aguas de producción”. En: Ciencia, tecnología y Futuro (CT&F). Ecopetrol-ICP. Vol. 1. N.o 2. 1996. pp. 55-65. DOI: https://doi.org/10.29047/01225383.598
U. A. Daiminger, A. G. Geist, W. Nitsch, y P. K. Plucinski. Efficiencyy of Hollow Fiber Modules for Nondispersive Chemical extraction. Ind. Chem. Res. N.o 35. 1996. pp. 184-191. DOI: https://doi.org/10.1021/ie9502392
T. Hung, C. Lee. Retardation of the transport of Eu(II) through supported di-(2ethylhexil) phosphoric acidkerosene liquid membrane, in solvent extraction. Ed. T. Sekine. Elsevier Science Publishers. 1992. pp. 1505-1510. DOI: https://doi.org/10.1016/B978-0-444-88677-4.50061-1
W. R. Dwoezak, A. J. Nasser. “Pilot-scale evaluation of supported liquid membrane extraction”. Sep. Sci. Technol. N.o 22. 1987. pp. 677-689. DOI: https://doi.org/10.1080/01496398708068974
C. Huang, T. Huang. “Kinetics of the extraction of uranium (IV) from nitric acid solutions with D2EPHA”. Ind. Chem. Res. N.o 27. 1988. pp. 1675-1680. DOI: https://doi.org/10.1021/ie00081a019
P. R. Danesi. “The relative importance of diffusion an chemical reaction in liquid-liquid extraction kinetics”. Solv. Extr. Ion Exch. N.o 2. 1984. pp. 29-44. DOI: https://doi.org/10.1080/07366298408918434
R. S. Juang, S. H. Lee. “Extraction equilibrium of lead (II) from nitrate solutions with acidic organophosphorus compounds”. J. Chem. Tech. Biotechnol. N.o 60. 1994. pp. 61-66. DOI: https://doi.org/10.1002/jctb.280600110
R. Juang, R. Lo. “Kinetic of the coupled transport of vanadium (IV) from sulfate solutions through supported liquid membranes”. Ind. Eng. Chem. Res. N.o 33. 1994. pp. 1011-1016. DOI: https://doi.org/10.1021/ie00028a031
M. N. Hudson. “An Introduction to some aspects of solvent extraction chemistry in hydrometallurgy”. Hydrometallurgy. N.o 9. 1982. pp. 149-168. DOI: https://doi.org/10.1016/0304-386X(82)90014-7
T. Huang, T. Tsai. Separation of Cobalt and Nickel ions with 2-ethylhexyl phosphoric acid mono-2-ethylexyl ester dissolvend in kerosene. Ed. T. Sekine. Elsevier Science Publishers. 1992. pp. 1529-1534. DOI: https://doi.org/10.1016/B978-0-444-88677-4.50071-4
Y. Miyake, H. Matsuyama, M. Nishida. “Kinetics and mechanicsm of metal extraction with acid organophosphorus extractans (I). Extraction rate limited by diffusion process”. Hydrometallurgy. N.o 23. 1990. pp. 19-35. DOI: https://doi.org/10.1016/0304-386X(90)90073-B
A. I. Alonso, A. Urtiaga, S. Zamacona, A. Irabien, I. Ortiz. « Kinetic modelling of cadmium renoval from phosphoric acid by mondispersive solvent extraction”. J. Memb. Sci. Vol. 130. N.o 1. 1997. pp. 193-203. DOI: https://doi.org/10.1016/S0376-7388(97)00028-8
M. Cerná, V. Bizek, J. Stastora, V. Rod. “Extraction of nitric acid with quaternary ammonium bases”. Chem. Eng. Sci. N.o 48. 1993. pp. 99-103. DOI: https://doi.org/10.1016/0009-2509(93)80286-Y
H. Escalante, A. I. Alonso, I. Ortíz, A. Irabien. “Separation of L-phenylalanine by nondispersive extraction and backextraction. Equilibrium and kinetic parameters”. Separation Science and Technology. Vol. 33. N.o 1. 1998. pp. 119-139. DOI: https://doi.org/10.1080/01496399808544759
B. Galán. Separación-concentración de Cr(VI) en módulos de fibra hueca. Tesis doctoral. Universidad de Cantabria. Santander, España. 1994. p. 250.
H. Escalante. Análisis y modelado de la separaciónconcentración de L-fenilalanina mediante extracción no dispersiva. Tesis doctoral. Universidad de Cantabria. Santander, España. 1997. p. 85.
Downloads
Published
How to Cite
Issue
Section
License
Revista Facultad de Ingeniería, Universidad de Antioquia is licensed under the Creative Commons Attribution BY-NC-SA 4.0 license. https://creativecommons.org/licenses/by-nc-sa/4.0/deed.en
You are free to:
Share — copy and redistribute the material in any medium or format
Adapt — remix, transform, and build upon the material
Under the following terms:
Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
NonCommercial — You may not use the material for commercial purposes.
ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
The material published in the journal can be distributed, copied and exhibited by third parties if the respective credits are given to the journal. No commercial benefit can be obtained and derivative works must be under the same license terms as the original work.
Twitter