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H-factor is a kinetic model for the rate of delignification in kraft pulping. It is a single variable model combining temperature (T) and time (t) and assuming that the delignification is one single reaction.

${\displaystyle H=\int _{0}^{t}\exp \left(43.2-16115/T\right)\,dt\,}$

References

1. Gullichsen, Johan; Fogelholm, Carl-Johan (2000). Chemical Pulping. Papermaking Science and Technology. Vol. 6A. Finland: Fapet Oy. pp. 291–292. ISBN 952-5216-06-3.

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