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Nonequilibrium hysteresis and Wien effect water dissociation at a bipolar membrane

D. T. Conroy1, R. V. Craster2, O. K. Matar1, L.-J. Cheng3, and H.-C. Chang3

  • 1Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
  • 2Department of Mathematics, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
  • 3Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA

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Phys. Rev. E 86, 056104 – Published 6 November, 2012

DOI: https://doi.org/10.1103/PhysRevE.86.056104

Abstract

As in electrochemical cyclic voltammetry, time-periodic reverse voltage bias across a bipolar membrane is shown to exhibit hysteresis due to transient effects. This is due to the incomplete depletion of mobile ions, at the junction between the membranes, within two adjoining polarized layers; the layer thickness depends on the applied voltage and the surface charge densities. Experiments show that the hysteresis consists of an Ohmic linear rise in the total current with respect to the voltage, followed by a decay of the current. A limiting current is established for a long period when all the mobile ions are depleted from the polarized layer. If the resulting high field within the two polarized layers is sufficiently large, water dissociation occurs to produce proton and hydroxyl traveling wave fronts which contribute to another large jump in the current. We use numerical simulation and asymptotic analysis to interpret the experimental results and to estimate the amplitude of the transient hysteresis and the water-dissociation current.

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References (21)

  1. M. Samorski, G. Müller-Newen, and J. Büchs, Biotechnol. Bioeng. 92, 61 (2005).
  2. D. Kohlheyer, J. C. T. Eijkel, S. Schlautmann, A. van den Berg, and R. B. M. Schasfoort, Anal. Chem. 79, 8190 (2007).
  3. S. Mafe and P. Ramirez, Acta Polym. 48, 234 (1997).
  4. L.-J. Cheng and H.-C. Chang, Biomicrofluidics 5, 046502 (2011).
  5. P. Ramirez, H.-J. Rapp, S. Mafe, and B. Bauer, J. Electroanal. Chem. 375, 101 (1994).
  6. A. Alcaraz, P. Ramirez, S. Mafe, H. Holdik, and B. Bauer, Polymer 41, 6627 (2000).
  7. Y. Tanaka, J. Membr. Sci. 350, 347 (2010).
  8. R. Simons, Desalination 28, 41 (1979).
  9. R. Simons, Electrochim. Acta 29, 151 (1984).
  10. R. Simons, Nature (London) 280, 824 (1979).
  11. R. Simons, Electrochim. Acta 30, 275 (1985).
  12. V. I. Zabolotskii, S. V. Utin, K. A. Lebedev, P. A. Vasilenko, and N. V. Shel'deshov, Russ. J. Electrochem. 48, 767 (2012).
  13. D. Coelho, M. Shapiro, J. F. Thovert, and P. M. Adler, J. Colloid Interface Sci. 181, 169 (1996).
  14. H.-C. Chang and L. Y. Yeo, Electrokinetically Driven Microfluidics and Nanofluidics (Cambridge University Press, Cambridge, 2010).
  15. J. A. Manzanares, W. D. Murphy, S. Mafe, and H. Reiss, J. Phys. Chem. 97, 8524 (1993).
  16. G. Yossifon, P. Mushenheim, Y.-C. Chang, and H.-C. Chang, Phys. Rev. E 79, 046305 (2009).
  17. A. Sokirko, P. Ramirez, J. A. Manzanares, and S. Mafe, Ber. Bunsen-Ges. Phys. Chem. 97, 1040 (1993).
  18. L.-J. Cheng and L. J. Guo, ACS Nano 3, 575 (2009).
  19. Y. Ben and H.-C. Chang, J. Fluid Mech. 461, 229 (2002).
  20. F. Plouraboué and H.-C. Chang, Phys. Rev. E 79, 041404 (2009).
  21. A. J. Bard and L. R. Faulkner, Electrochemical Methods: Fundamentals and Applications (Wiley, New York, 2001).

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Phys. Rev. E 86, 056104– Published 6 November, 2012
  • Received 1 March 2012
Article part of CHORUS

©2012 American Physical Society

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