Reactions of carbohydrates – oxygen-alkali delignification

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Reactions of carbohydrates – oxygen-alkali delignification General aspects The term “selectivity” can be simply defined as the ratio of removal of pulp lignin to that of pulp carbohydrates.1 Pulp carbohydrates, cellulose (65−75 % of unbleached pulp) and hemicelluloses (20−30 % of unbleached pulp),2 are the structural components contributing to pulp strength. Hence, it is desirable

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Authors & references

Author:

Raimo Alén, University of Jyväskylä

References:

Salmela, M. 2007. Description of Oxygen-Alkali Delignification of Kraft Pulp Using Analysis of Dissolved Material. Doctoral Thesis. University of Jyväskylä, Finland.
Alén, R. 2000. Basic chemistry of wood delignification. In: Stenius, P. (Ed.). Forest Products Chemistry. Fapet, Helsinki, Finland. Pp. 58−104.
Dence, C. W. and Reeve, D. W. (Eds.). 1993. Pulp Bleaching ─ Principles and Practice. Tappi Press, Atlanta, GA, USA. 868 p.
Sjöström, E. 1993. Wood Chemistry ─ Fundamentals and Applications. 2^nd edition. Academic Press, San Diego, CA, USA. Pp. 166−198.
Bajpai, P. 2005. Developments in Environmental Management – Environmentally Benign Approaches for Pulp Bleaching. Elsevier, Amsterdam, The Netherlands. 278 p.
Suess, H. U. 2010. Pulp Bleaching Today. Walter de Gruyter, Berlin, Germany. 310 p.
Malinen, R. 1974. Behavior of Wood Polysaccharides during Oxygen-Alkali Delignification. Doctoral Thesis. Helsinki University of Technology, Finland.
McDonough, T. J. 1993. Oxygen delignification. In: Dence, C. W. and Reeve, D. W. (Eds.). Pulp Bleaching ─ Principles and Practice. Tappi Press, Atlanta, GA, USA. Pp. 213−239.
Gellerstedt, G. 1996. Chemical structure of pulp components. In: Dence, C. W. and Reeve, D. W. (Eds.). Pulp Bleaching ─ Principles and Practice. Tappi Press, Atlanta, GA, USA. Pp. 91−111.
Kolmodin, H. and Samuelson, O. 1971. Oxygen-alkali treatment of hemicellulose. 1. Experiments with corn-cob xylan. Svensk Papperstidning 74(10):301−309.
Kolmodin, H. and Samuelson, O. 1972. Oxygen-alkali treatment of hydrocellulose. Svensk Papperstidning 75(9):369−372.
Kolmodin, H. and Samuelson, O. 1973. Oxygen-alkali treatment of hemicellulose. 1. Experiments with birch xylan. Svensk Papperstidning 76(2):71−77.
Ericsson, B., Lindgren, B. O. and Theander, O. 1973. Degradation of cellulose during oxygen bleaching. Oxidation and alkali treatment of D-glucosone. Cellulose Chemistry and Technology 7(5):581−591.
Löwendahl, L. and Samuelson, O. 1974. Influence of iron and cobalt compounds upon oxygen-alkali treatment of cellulose. Svensk Papperstidning 77(16):593−602.
Malinen, R. 1975. Behavior of wood polysaccharides during oxygen-alkali delignigication. Paperi ja Puu 57(4A):193−196,199−201,203−204.
Alén, R. and Sjöström, E. 1991. Formation of low-molar-mass compounds during the oxygen delignification of pine kraft pulp. Holzforschung 45(Suppl.):83−86.
Alén, R. 2011. Principles of biorefining. In: Alén, R. (Ed.). Biorefining of Forest Resources. Paper Engineers’ Association, Helsinki, Finland. Pp. 55−114.
Samuelson, O. and Sjöberg, L. 1974. Spent liquor from oxygen-alkali cooking of birch. Cellulose Chemistry and Technology 8(1):39−48.
Malinen, R. and Sjöström, E. 1995. Studies on the reactions of carbohydrates during oxygen bleaching. V. Degradation of xylose, xylosone, xylo-oligosaccharides and birch xylan. Paperi ja Puu 57(3):101−102,107−109,111−114.
Young, R. A. and Gierer, J. 1976. Degradation of native lignin under oxygen-alkali conditions. Applied Polymer Symposia 28:1213−1223.
Gierer, J. and Imsgard, F. 1977. The reactions of lignin with oxygen and hydrogen peroxide in alkaline media. Svensk Papperstidning 80(16):510−518.

This page has been updated 19.05.2021

Reactions of carbohydrates – oxygen-alkali delignification

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