Raimo Alén, University of Jyväskylä and Victoria Lindqvist, Forest Products Engineers have condensed and modified the text mainly from the reference “Gustafsson, J., Alén, R., Engström, J., Korpinen, R., Kuusisto, P., Leavitt, A, Olsson, K., Piira, J., Samuelsson, A. and Sundquist, J. 2011. Pulping. In: Fardim, P. (Ed.). Chemical Pulping Part 1, Fibre Chemistry and Technology. 2nd edition. Paper Engineers’ Association, Helsinki, Finland. Pp. 187−381”. More literature references can also be found in this chapter.
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