Caustic soda and bio-soda pulping of jute

In this study, new approaches for pulping jute have been evaluated using caustic soda and bio-soda pulping approaches. Although caustic soda pulps had good yield and strength properties, the delignification ability of the system was limited. Requiring higher temperatures and cooking times to achieve desired residual lignin around 5%. This resulted in yield and strength losses of the pulp. A comparison of pulps from bio-tretaed and untretaed samples of jute bast at 300ml CSF clearly demonstrates the advantage of bio-treatment over untretaed samples. Ceriporiopsis subvermispora treatment prior to soda pulping synergistically affects on lignin removal. These preliminary results imply that white-rot fungi treatment was effective in pulp strength and lower residual lignin. This improvement is very important because the residual lignin in pulps had reducing effects on quality of paper products. In bio-soda pulps, the highest burst strength of 4.2 kPa.m2/g and tensile strength of 62.7 N.m/g were found at 200 °C and 45 min reaction conditions.

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[1]. Smook GA. 1994. Handbook for Pulp and Paper Technologists. Angus Wilde Publications, Canada.
[2]. Koning J. 1988. Implications of biotechnology in the pulp and paper industry from the mamagement perspective. Biomass. 15: 127-131.
[3]. Eriksson K-EL. 1990. Biotechnology in tte pulp and paper industry. Wood science and technology. 24: 79- 101.
[4]. Trotter PC. 1990. Biotechnology in the pulp and paper industry: a review. Tappi journal. 73 (5): 201-205.
[5]. Blanchette RA, Burnes TA, Eardmans MM, Akhthar M. 1992. Eval. isolates p. chrysosporium and c. subvermispora for use in biological pulping process. Holzforschung. 46 (2): 109-115.
[6]. Akhtar M. 1994. Biomech. pulping of aspen wood chips with three strains of C. subvermispora. Holzforschung. 48 (3): 199-202.
[7]. Sykes M. 1993. Bleaching and brightness stability of aspen biochemical pulps. Tappi journal. 76 (11): 121- 126.
[8]. Fischer K, Akhtar M, Blanchette RA, Burnes TA, Messner K, Kirk T. 1994. Reduction of resin content in wood chip during experimental biological pulping processes. Holzforschung. 48 (4): 285-290.
[9]. Blanchette RA, Burnes TA, Leatham GF, Effland MJ. 1988. Selection of white-rot fungi for biopulping. Biomass. 15: 93-101.
[10]. Akhtar M, Attridge MC, Myers, GC, Blachette RA. 1993. Biomechanical pulping of loblolly pine chips with selected white-rot fungi. Holzforschung. 47(1): 36.
[11]. Anonymous 1992. A glimpse of the future, Biopulping consortium final report: 1987 to 1992. USDA Foret Products Labaratory, Madison, WI.
[12]. Sabharwal HS, Akhtar M, Blanchette RA, Young RA. 1994. Biomechanical pulping of kenaf. Tapi journal. 77(12): 105-112.
[13]. Atchison JE. 1983. Data on Non-wood Plant Fibers. In: Properties of Fibrous Raw Matererials and their Prep, for Pulping (ed. Kocurek MJ) J. Textbook Commit, of the Paper Ind., Vol. 3, pp. 157-174. Tappi Press, Atlanta, GA.
[14]. Rowell RM. 1996. Opportunities for Composites from Agro-based Resurces. In: Paper and Composites from Agro-based Resources (eds. Rowell RM, Young RA, Rowell JK), pp. 249-167. CRC Press Inc, Boca Raton, FL.
[15]. Anonymous. 1991. Utilization of jute fibres, jute sticks and whole jute stalks for newsprint & papermaking. Central Pulp & Paper Research Institute Saharanpur, India.
[16]. Akhtar M, Blanchette RA, Burnes TA. 1995. Using simons stain to predict energy savings during biomechanical pulping. Wood and fiber science 27 (3): 258-264.
[17]. Sjostrom E. 1977. The behavior of wood polysacchjtrides during alkaline pulping processes. Tapi journal 60(9): 151-154.
[18]. Sjostrom E. 1993. Wood Chemistry. Academic Press, New York, NY.
[19]. Fernandez EO, Young RA. 1996. Properties of cellulose pulps from acidic and basic processes, Cellulose. 3:21-44.
[20]. Akhtar M, Blachette RA, Kirk T. 1997. Fungal delignification and biomechanical pulping of wood. In: Advances in Biochemical Engineering/Biotechnology (ed. Scheper T), Vol. 57, pp. 195-199. Springer- Verlag, Germany