Changes in the structural composition of hardwood kraft pulp during bleaching View Full Text


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Article Info

DATE

2000-05

AUTHORS

G. P. Aleksandrova, S. A. Medvedeva, A. P. Sinitsyn, O. N. Okunev

ABSTRACT

The possibility of using xylanase preparations for hydrolyzing hemicelluloses in a non-bleached kraft pulp in order to facilitate its bleaching was studied. The effects of enzymatic preparations of fungal and bacterial origins were examined, and the optimal conditions for xylanase activity were determined. UV spectroscopy demonstrated that the treatment of kraft pulp with enzymatic preparations containing xylanase facilitated the subsequent removal of lignin and increased the brightness by 5%. The effect of enzymatic treatment was retained in the case of peroxide bleaching. The enzymatic preparations studied are promising for the development of chlorine-free pulp bleaching technologies. More... »

PAGES

245-249

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf02742573

DOI

http://dx.doi.org/10.1007/bf02742573

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1054504386


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