Experiments and Modeling of Ion Exchange Resins for Nuclear Power Plants

Resins are used in nuclear power plants for water ultrapurification. Two approaches are considered in this work: column experiments and simulations. A software called OPTIPUR was developed, tested and used. The approach simulates the onedimensional reactive transport in porous medium with convectivedispersive transport between particles and diffusive transport within the boundary layer around the particles. The transfer limitation in the boundary layer is characterized by the mass transfer coefficient (MTC). The influences on MTC were measured experimentally. The variation of the inlet concentration does not influence the MTC; on the contrary of the Darcy velocity which influences. This is consistent with results obtained using the correlation of Dwivedi&Upadhyay. With the MTC, knowing the number of exchange site and the relative affinity, OPTIPUR can simulate the column outlet concentration versus time. Then, the duration of use of resins can be predicted in conditions of a binary exchange.

Authors:

• Aurélie Mabrouk
• Vincent Lagneau
• Caroline De Dieuleveult
• Martin Bachet
• Hélène Schneider
• Christophe Coquelet

Keywords:

• ion exchange resin
• mass transfer coefficient
• modeling
• OPTIPUR

References:

[1] F. Helfferich, Ion Exchange, McGraw-Hill, New York, 1962, pp. 5-9.
[2] F. Gressier, "Study of radionuclide retention on ion exchange resins for
pressurized water reactor circuits," (Translation) Phd Thesis with Mines
ParisTech, 2008.
[3] G. C. Lee, G. L. Foutch, and A. Arunachalam, "An evaluation of masstransfer
coefficients for new and used ion-exchange resins," Journal of
Reactive and Functional Polymers, vol. 35, 1997, pp. 55-73.
[4] V. N. Chowdiah, G. L. Foutch, and G.C. Lee, "Binary liquid-phase mass
transport in mixed-bed ion exchange at low solute concentration,"
Journal of Industrial & Engineering Chemistry Research, vol. 42,
2003, pp. 1485-1494.
[5] C. de Dieuleveult, M. Bachet, and V. Lagneau, "OPTIPUR: a new
graphical tool to optimize the management of ultrapure water systems
with a focus on ion exchange kinetics," unpublished.
[6] J. van der Lee, L. De Windt, V. Lagneau, and P. Goblet, "Moduleoriented
modeling of reactive transport with HYTEC," Computers and
Geosciences Journal, vol. 29, 2003, pp. 265-275.
[7] E.L. Cussler. Diffusion Mass transfer in fluid systems, Cambridge
university press, Cambridge, 2009, pp. 274-277.
[8] M. Franzreb, W.H. Höll, and S.H. Eberle, "Liquid-phase mass transfer
in multicomponent ion exchange I. Systems without chemical reactions
in the film," Journal of Reactive Polymers, vol. 21, 1993, pp. 1171-33.
[9] Y. Jia, and G. L. Foutch, "True multi-component mixed-bed ionexchange
modeling," Journal of Reactive and functional Polymers, vol.
60, 2004, pp. 121-135.
[10] V. Lagneau, R2D2-reactive transport and waterflow on an Odd
Dimension 2 grid- Technical notice, Technical report, 2010
[11] J. van der Lee. Thermodynamic and mathematical concepts of CHESS
Technical notice, Technical report, 2009.
[12] P.N. Dwivedi, and S.N. Upadhyay, "Particle-fluid mass transfer in fixed
and fluidized beds," Journal of Industrial & Engineering Chemistry
Process Design and Development, vol. 16, 1977, pp. 157-165.