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In this experiment, xylanase was used prior to bleaching. The dosages of xylanase are 0.25; 0,5; 0,75; 1;1,25 kg/ton of chips. The pulps after pretreatment were tested and treated with D0ED1D2 bleaching sequences. The result shoew that xylanase can decreasekappa number as much as 10.33-11.45. The optinum kappa number (10.33)...
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