On the Treating of Lead Polluted Water: Flotation of Lead Colloidal Carbonate
Francisco J. Tavera,1 Martín Reyes P.,2* Ramiro Escudero G.1 and Francisco Patiño C.2
1 Instituto de Investigaciones Metalúrgicas, Universidad Michoacana de San Nicolás de Hidalgo. Santiago Tapia 403, 58000, Morelia Michoacán, México. E–mail tavera1950@gmail.com, ramiro1963@gmail.com
2 Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca Tulancingo Km 4.5 42184. Pachuca, Hidalgo, México E–mail mreyes@uaeh.edu.mx
Received April 20, 2010. ]]> Accepted August 24, 2010.
Abstract
The colloid flotation of lead carbonate in aqueous media is studied at pH 7. The flotation system consisted of five spargered flotation cells in a serial array. The flotation cells were operated under controlled conditions of superficial gas and liquid velocity, frother, and collector concentration. The measured variables were gas holdup, bubble size, superficial bubble surface flux, and lead recovery in the concentrate. The experimental data show that it is possible to separate up to 93% (w/w) of lead from the aqueous media when the superficial gas velocity is 0.8 cm/s and the superficial liquid velocity is 0.19 cm/s.
Keywords: colloid flotation, lead carbonate, flotation cell, frother, collector.
Resumen
Se estudio la flotación coloidal de carbonato de plomo a pH de 7.0, en un sistema en serie de cinco celdas de flotación, bajo condiciones controladas de velocidad superficial de gas y líquido, concentración de espumante y colector. Las variables medidas fueron: gas retenido, tamaño de burbuja, flujo de área superficial de burbujas y recuperación de plomo reportado en el concentrado. Los datos experimentales muestran que es posible separar el 93% (w/w) de plomo como carbonato de plomo del medio acuoso, con una velocidad superficial de gas de 0.8 cm/s, y una velocidad superficial de líquido de 0.19 cm/s.
Palabras clave: flotación coloidal, carbonato de plomo, celda de flotación, espumante, colector.
]]> DESCARGAR ARTÍCULO EN FORMATO PDF
References
1. Tratado universal del medio ambiente, tomo 4, Ed., Rezza, México,1993, 31–37. [ Links ]
2. Sebba, F., in: Ion flotation, Ed. Elsevier Publisher, London. New York 1962. [ Links ]
3. Ghazy, S. E.; Elmorsy, S. M.; Ragab, A. H. J. Appl. Sci. Environ. Manage. 2008, 12, 75–82. [ Links ]
4. Jamaleddin, O. E.; Martin, E. W.; Juan, H. V. Sep. Purif. Technol, 2000, 18, 25–36. [ Links ]
5. Doyle, F. Int. J. Miner. Process. 2003, 72, 387–399. [ Links ]
6. Maxwell, J. C., in: A Treatise of Electricity and Magnetism. 3rd Edition, 1 (II), Chapter IX, Oxford University Press, London, 1892, 435–449. [ Links ]
7. Tavera, F. J.; Gomez, C. O.; Finch, J. A. Can. Metall. Quart. 1998. 37, 1, 19–25. [ Links ]
8. Banisi, S.; Finch, J. A. Miner. Eng. 1994, 7, 1555–1559. [ Links ]
9. Escudero, R. Ph. D. thesis. 1998 McGill University, Canada. [ Links ]
10. Gorain, B. K. Ph. D. thesis, 1997 University of Queensland, Australia. [ Links ]
11. Finch, J. A.; Dobby G. S., in: Column flotation, Ed. Pergamon Press, Oxford, 1990. [ Links ]
12. Levenspiel, O., in: Chemical Reaction Engineering, Ed., McGraw Hill, Inc, New York. 1972. [ Links ]
13. Tavera, F. J.; Escudero, R.; Finch, J. A. Int. J. Miner. Proc. 2001, 61, 23–40. [ Links ]
14. Shaban, E. G. Iran. J. Chem. Chem. Eng. 2007, 26, 83 – 92. [ Links ]
15. Tavera, F. J.; Escudero, R.; Uribe, A.; Finch, J. A. Afinidad 2000, LVII490, 415–423. [ Links ]
16. Tavera, F. J.; Gómez, C. O.; Finch, J. A. Trans. Instn. Min. Met. 1996, 105, 99–104. [ Links ]
]]>