Volume No. 6 Issue No.: 2 Page No.: 239-244 Oct-Dec 2011


Study of Bio-Pulping Process for Use of Rice Straw as Fibrous Raw Material in Pulp AND Paper Industry


Akhouri Sanjay Kumar Sinha

Department of Chemical Technology, S.L.I.E.T. Longowal, Sangrur (INDIA)


Received on : January 22, 2011




The pulp and paper industry is facing increasing pressure in terms of environmental regulations, energy usage and profit margins; therefore, new or greatly modified technologies will be necessary to carry the industry through the 21st century. The innovations taking place in the industry can be classified as chemical and biological as well as combinations of the two. Asia produces over 300 million tons of rice straw which is nearly 90 per cent of the total world production. Rice straw has nearly 56 percent holo-cellulose, 17 percent lignin and 13 percent silica content. Experimental studies for bio-pulping of rice straw at lab level were done using Phanerochaete chrysosporium because it is the most studied white rot fungus and grows rapidly. The pulp yield was 52 percent with a Kappa number of 23.12 which is considered good for paper making. Bio-pulping techniques are environmentally friendly in comparison to conventional pulping methods. Bio-pulping yield obtained is higher than the conventional pulping methods. More refinement is required for accelerating the reaction rate and decrease of time consumption to make it widely acceptable as alternative pulping process as low energy consuming and eco-friendly.


Keywords : Bio-pulping, Silica, Rice straw, Lignin, Holocellulose