The influence of delignification by hydrogen peroxide to the yield and quality of bleaching pulp
1986
Beharic, S. (Unicep, Banja Luka (Yugoslavia). RO Incel, Sektor za proizvodnju)
Results of this research show that the yield of cellulose delignified at P/E stage (hydrogen peroxide at the stage of warm alkali improvement) is influenced the most by NaOH quantity and reaction duration. During this process NaOH quantity ought to be put in accordance with H2O2 quantity, with NaOH surplus necessary only for efficient dissolving of cellulose fractions deviating from alpha-cellulose. Yields of cellulose bleaching by P/E, relative to C-E (chlorination-extraction), having approximately equal quality regarding whiteness and alfa cellulose, are by about 1.5-1.8% higher.
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