Studies on soda and soda-AQ pulping of <i style="">Eulaliopsis binata</i>

Abstract

<i style="">Eulaliopsis binata</i> was cooked by soda and soda–AQ pulping processes and results were compared with alkali-O₂, alkali-O₂-AQ and NSSC pulping processes. Even the nodes are not resistant to the action of cooking liquor and consequently at 14 % alkali dose whole plant is reduced to a clean and regular pulp giving 48 % screened pulp yield of Kappa number 16. A screened pulp yield of 49.8 % at Kappa no 15.7 was obtained at 12 % alkali and 0.5 % AQ.<b style=""> </b>In order to get 80 % (ISO) brightness, the pulp was bleached by single stage hypochlorite bleaching, O₂ delignification followed hypochlorite bleaching, peroxide bleaching, O₂ delignification followed by peroxide, CEH and OCEH bleaching sequences. Various paper grades like news print, light weight writing and printing paper, cigarette tissue, condenser paper, high grade bond, ledger and other cultural papers can be manufactured by selecting an appropriate pulp brightness and blending with long fibred pulp