Title: Studies on selectivity improvement of oxygen delignification for sulfite pulp
Abstract: The oxygen delignification selectivity for sulfite bagasse pulp was studied and the methods to improve the oxygen delignification were researched in this paper.The results show that xylanase or HNO3 pretreatment and H2O2,CH3OH or Na2S as a reinforcing agent can increase delignification selectivity,among which HNO3 has the best delignification selectivity at a dosage of 2%,and H2O2 ranks second at dosage of 0.6%,but can reach the highest bleaching whiteness.The results also show that xylanase,methanol or Na2S pretreatment can improve the oxygen delignification selectivity at a certain degree.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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