Mass transfer in washing

Authors & references

Authors:

Raimo Alén, University of Jyväskylä and Victoria Lindqvist, Forest Products Engineers have modified the text from the reference “Tervola, P., Andersson, R., Danielsson, M., Engelfeldt, A., Kiero, S., Olsson, K., Pikka, O., Samuelsson, A. and Siik. S. 2011. In: Fardim, P. (Ed.). Chemical Pulping Part 1, Fibre Chemistry and Technology. 2^nd edition. Paper Engineers’ Association, Helsinki, Finland. Pp. 382−456”.

References:

1. Tervola, P., Andersson, R., Danielsson, M., Engelfeldt, A., Kiero, S., Olsson, K., Pikka, O., Samuelsson, A. and Siik. S. 2011. In: Fardim, P. (Ed.). Chemical Pulping Part 1, Fibre Chemistry and Technology. 2^nd edition. Paper Engineers’ Association, Helsinki, Finland. Pp. 382−456.
2. Sherman, W. R. 1964. The movement of a soluble material during the washing of a bed of packed solids. AIChE Journal 10(6):855–860.
3. Brenner, H. 1962. The diffusion model of longitudinal mixing in beds of finite length. Numerical values. Chemical Engineering Science 17(4):229–243.
4. Poirier, N. A., Crotogino, R. H. and Douglas, W. J. M. 1988. Axial dispersion models for displacement washing of packed beds of wood pulp fibres. The Canadian Journal of Chemical Engineering 66(12):936–944.
5. Wakeman, R. J. and Tarleton, E. S. 1999. Filtration – Equipment Selection Modelling and Process Simulation. Elsevier Science, Oxford, UK. 446 p.
6. Mauret, E. and Renaud, M. 2002. Measurement of axial dispersion in fibre beds: application to displacement washing of pulp. Appita 55(3):123–129.
7. Rosen, A. 1975. Adsorption of sodium ions on kraft pulp fibers during washing. Tappi Journal 58(9):156–161.
8. Ohlsson, A. and Rydin, S. 1975. Washing of pulps. Part 2. The sorption of Na, Mg and Ca on kraft pulp. Svensk Papperstidning 78(15):549–552.
9. Bear, J. 1988. Dynamics of fluids in porous media. Dover Publications, New York, NY, USA. 764 p.
10. Fogelberg, B. C. and Fugleberg, S. 1963. A study of factors influencing the amount of residual alkali in sulphate pulp. Paperi ja Puu 45(12):675–680.
11. Hartler, N. and Rydin, S. 1975. Washing of pulps. Part 1. Equilibrium studies. Svensk Papperstidning 78(10):367–372.
12. Gullichsen, J. and Östman, H. 1976. Sorption and diffusion phenomena in pulp washing. Tappi Journal 59(6):140–143.
13. Grähs, L.-E. 1976. Displacement washing of packed beds of cellulose fibres. Part 2. Analysis of laboratory experiments. Svensk Papperstidning 79(3):84–89.
14. Eriksson, G. and Grén, U. 1996. Pulp washing: Sorptio equilibria of metal ions on kraft pulps. Nordic Pulp and Paper Research Journal 11(3):164–170.
15. Towers, M. and Scallan, A. M. 1996. Predicting the ion-exchange of kraft pulps using Donnan theory. Journal of Pulp and Paper Science 22(9):332–337.
16. Ala-Kaila, K. 1998. Modeling of Mass Transfer Phenomena in Pulp-water Suspensions. Doctoral Thesis. Helsinki University of Technology, Espoo, Finland.
17. Bygrave, G. and Englezos, P. 2000. A thermodynamics-based model and data for Ca, Mg and Na ion partitioning in kraft pulp fibre suspensions. Nordic Pulp and Paper Research Journal 15(2):155–159.
18. Norberg, C., Lidén, J. and Öhman, L.-O. 2001. Modelling the distribution of “free”, complexed and precipitated metal ions in a pulp suspension using Donnan equilibria. Journal of Pulp and Paper Science 27(9):296–301.
19. Räsänen, E., Stenius, P. and Tervola, P. 2001. Model describing Donnan equilibrium, pH and complexation equilibria in fibre suspensions. Nordic Pulp and Paper Research Journal 16(2):130–139.
20. Koukkari, P., Pajarre, R. and Pakarinen, H. 2002. Modeling of the ion exchange in pulp suspensions by Gibbs energy minimization. Journal of Solution Chemistry 31(8):627–638.
21. Davies C. N. 1952. The separation of airborne dust and mist particles. In: Proceedings of the Institution of Mechanical Engineers. London, UK. Part B 1:185–198.
22. Ala-Kaila, K. and Alén, R. 1999. Dynamic response in pH and the transient behavior of some chemical elements in pulp-water suspensions. Nordic Pulp and Paper Research Journal 14(2):149–157.
23. Räsänen, E., Tervola, P., Fiskari, J., Stenius, P. and Vuorinen, T. 2000. Modeling of non-process element balances in washing and bleaching of kraft pulp. In: 2000 International Pulp Bleaching Conference. Halifax, Canada. Pp. 267–271.
24. Räsänen, E. 2003. Modelling ion exchange and flow in the pulp suspension. Doctoral Thesis. Helsinki University of Technology, Espoo, Finland.
25. Tervola, P. and Räsänen, E. 2005. A cake-washing model with an overall cation transfer in kraft pulp washing. Chemical Engineering Science. 60(2):6899–6908.
26. Edwards, L. and Rydin, S. 1975. Washing of pulps, 3. Transfer rates of dissolved sodium and lignin from pulps in dilute, agitated suspension. Svensk Papperstidning 78(16):577–581.
27. Trinh, D. T. and Crotogino, R. H. 1987. The rate of solute removal from kraft pulp fibres during washing. Journal of Pulp and Paper Science 13(4):126–132.
28. Stromberg, C. B. 1991. Washing for low bleach chemical consumption. Tappi Journal 74(10):113–122.
29. Ala-Kaila, K., Vehmaa, J., Gullichsen, J. and Strömberg, B. 1996. Leaching of organic material from kraft pulps. In: Proceedings of Pulp Washing ’96, Vancouver, Canada. Pp. 147–154.
30. Andersson, R., Lidén, J. and Öhman, L.-O. 2003. The Donnan theory applied to pulp washing –Experimental studies of the removal of anionic substances from an assumed fiber lumen volume and from the fiber wall. Nordic Pulp Paper Research Journal 18(4):404–412.
31. Eriksson, G. and Grén, U. 1997. Pulp washing: Influence of temperature on lignin leaching from kraft pulps. Nordic Pulp and Paper Research Journal 12(4):244–251.