Mass Transfer Measurements in a Parallel Disk Cell Using the Limiting Current Technique
Keywords:
Electrochemical cell, limiting diffusion current technique, mass transfer coefficient, engineering parametersAbstract
Abstract. Mass transfer measurements in electrochemical cell using a different design and Reynolds numbers have been made in a parallel plate cell of disk geometry. The cell has only one inlet and exit, which produces extremely complex hydrodynamics in the cell. The mass-transfer coefficient was obtained using limiting diffusion current technique based in ferricyanide ion reduction, also overall mass transfer coefficients were correlated to the Reynolds number range between 80 to 1039. Here, we have made a theoretical approximation of the mass-transfer coefficient for disk geometry using the Levique relation. Finally, the disk design cell has showed improvements in the mass transfer coefficient.
Resumen. Las mediciones de transferencia de masa usando una celda electroquímica con un diseño diferente al usual han sido realizadas. Asimismo, fueron calculados los números de Reynolds con esta celda de placas paralelas con geometría de disco. La celda tiene solamente una entrada y una salida, la cual produce una hidrodinámica compleja. El coeficiente de transferencia de masa se obtuvo usando la técnica de la corriente límite basada en la reducción del ión del ferricianuro, asimismo, los coeficientes totales de la transferencia de masa fueron correlacionados al número de Reynolds en un rango de 80 a 1039. Aquí, se realizó una aproximación teórica del coeficiente de transferencia de masa para la celda con una geometría de disco usando la relación de Levique. Finalmente, el nuevo diseño de celda mostró un incremento en el coeficiente de transferencia de masa.
Downloads
References
2. Taama, W. N.; Plimley, R. E.; Scott K. Proceedings 4th European Symp. on Electrochemical Eng. (CHISA); Institute of Chemical Technology, Prague, 1996, 289-295.
3. Goodridge, F.; Mamoor, G. M.; Plimley, R. E. IChemE Symp. Ser. 1985, 98, 61-62.
4. Wragg, A. A.; Leontaritis, A. Chem. Eng. J. 1997, 66, 1-10.
5. Wragg, A. A.; Tagg, D. J.; Patrick, M. A. J. Appl. Electrochem. 1980, 10, 43-47.
6. Bengoa, C.; Montillet, A.; Legentilhomme, P.; Legrand J. J. Appl. Electrochem. 1997, 27, 1313-1322.
7. Oduoza, C. F.; Wragg, A. A. Chem. Eng. J. 2002, 85, 119-126.
8. Krýsa, J.; Iino, F.; Wragg, A. A. Int. J. Heat Mass Transfer 1999, 42, 3545-3548.
9. Mustoe, L. H.; Wragg, A. A. J. Chem Tech. Biotechnol. 1981, 31, 317-326.
10. Mustoe, L. H.; Wragg A. A. J. Appl. Electrochem. 1983, 13, 507-517.
11. Djati, A.; Brahimi, M.; Legrand, J.; Saidani, B. J. Appl. Electrochem. 2001, 31, 833-837.
12. Oduoza, C. F.; Wragg, A. A.. Chem. Eng. J. 1997, 68, 145-155.
13. Wragg, A. A.; Leontaritis, A. in Electrochemical Cell Design and Optimisation, Dechema Monograph 1991, 123, 345-360.
14. Polcaro, A. M.; Vacca, A.; Palmas, S.; Mascia M. J. Appl. Electrochem. 2003, 33, 885-892.
15. Jüttner, K.; Galla, U.; Schmieder, H. Electrochim. Acta. 2000, 45, 2575-2594.
16. Gandini, D.; Mahè, E.; Michaud, P. A.; Haenni, W.; Perret, A.; Comninellis, C. J. Appl. Electrochem. 2000, 30, 1345-1350.
17. Tagg, D. J.; Patrick, M. A.; Wragg A. A., Trans. I. Chem. Eng. 1979, 57, 176-181.
18. Leveque, M. A. Ann. Mines, Series 1928, 12-13, 201-225.
19. Pletcher, D. Industrial Electrochemistry, University Press, Cambridge 1982, Chapter 2, 52-87.
Downloads
Published
Issue
Section
License
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.