Biochemical pulping of bagasse.
This study deals with pretreatment of wheat straw with lignin-degrading fungi and its effect on chemical pulping. Ceriporiopsis subvermispora strains, which preferentially attack the lignin, were used for biochemical pulping of bagasse. Treatment of depithed bagasse with different strains of C. subvermispora reduced the kappa number by 10-15% and increased unbleached pulp brightness by 1.1-2.0 ISO points on chemical pulping at the same alkali charge. Bleaching of biopulps at the same chemical charge increased final brightness by 4.7-5.6 ISO points and whiteness by 10.2-11.4 ISO points. Fungal treatment did not result in any adverse effect on the strength properties of pulp.
Thapar Centre for Industrial Research & Development, Bhadson Road, Patiala 147 004, India.
Pratima
P
Bajpai
Shree Prakash
SP
Mishra
Om Prakash
OP
Mishra
Sanjay
S
Kumar
Pramod K
PK
Bajpai
Sarju
S
Singh
D001487:Basidiomycota / Q000378:metabolism*; D001673:Biodegradation, Environmental; D002482:Cellulose / Q000378:metabolism*; D007220:Industrial Waste
D007220:Industrial Waste; D002482:Cellulose; C027433:bagasse