Investigating the effect of using oxygen delignification process on kenaf bast kraft pulp properties

Zeinaly, Farhad; Kazemi Tabrizi, Ali; Einollahi, Yashar; Asadi Malek Jahan, Faraz

doi:10.22092/ijwpr.2018.120935.1464

Document Type : Research Paper

Authors

¹ Young Researchers and Elite Club, Karaj Branch, Islamic Azad University, Karaj, Iran.

² Department of Wood and Paper Industries, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran.

https://doi.org/10.22092/ijwpr.2018.120935.1464

Abstract

The first act to ameliorate bleaching process is the major elimination of lignin. Actually, the use of oxygen delignification stage before bleaching process is the essential stage in improving bleaching process and reducing process emission. In this study, the effect of conducting oxygen-delignifying process under different process condition, on chemical, physical, mechanical and optical properties of kenaf bast kraft pulp was investigated. The kenaf bast kraft pulp with the kappa number of 22, 1154 ml/g viscosity, and 38% ISO brightness was prepared. Oxygen-delignifying treatments were carried out with three different temperatures of 90, 100 and 110°C, and two oxygen pressures of 5 and 7 bars, with and without magnesium sulfate addition. Results indicated that oxygen delignification treatment led to intense decrease in pulp kappa number, while the pulp viscosity did not change significantly. Results of measuring delignified pulp viscosity showed that the magnesium sulfate addition caused to prevention of pulp viscosity downfall. The increase in reaction temperature had a significant effect on the process improvement, but raising the oxygen pressure did not have a meaningful effect on the process. Also, the pulp brightness was increased about 7%.

Keywords

Main Subjects

Pulp and paper

References

- Bajpai, P., 2005. Environmentally Benign Approaches for Pulp Bleaching, In: Developments in environmental management. Elsevier, Netherlands, 277p.

- Basta, J., Holtinger, L. and Hook, J., 1991. Controlling the Profile of Metals in the Pulp beforeHydrogen Peroxide Treatment. In Proceedings of 6th ISWPC, April 30-May 4: 237-244.

- Basta, J., Wane, G., Herstad-Svard, S., Lundgren, P., Johansson, N., Edwards, L. and Gu, Y., 1998. Partial closure in modern bleaching sequences. Tappi Journal, 81(4): 136-140.

- Berggren, R., 2003. Cellulose degradation in pulp fibers studied as changes in molar mass distributions. Ph.D. thesis, Department of Fibre and Polymer Technology, Royal Institute of Technology, Stockholm.

-Biermann, C.J., 1996. Handbook of pulping and papermaking. Elsevier, London, 778p.

-EUROPEAN COMMISSION, 2001. Integrated Pollution Prevention and Control (IPPC). Reference document on Best Available Techniques in the Pulp and Paper Industry, 475p.

-Hart, P.W., Mancosky, D. and Armstead, D., 2006. Medium consistency oxygen delignification performed with a controlled cavitation reactor. Tappi Journal, 5(2): 13-19.

-Hostachy, J.C., 2009. Bagasse pulp bleaching with ozone “It’s Time to Implement Green Bleaching Practices”, 9p.

-Johnson, B., 2008. Literature Review of Colour Reduction Technologies for Kraft Pulp Mill Effluent. By Beca AMEC Limited, 38p.

-Johnson, A.P., Johnson, B.I., Gleadow, P., Araneda, H., Silva, F.A., Aquilar, R.M. and Hsiang, C.J., 2008. 21st Century Fibrelines. International Bleaching Conference, Quebec City, 2-5 June, 15-28.

-Khristova, P., Kordsachia, O., Patt, R., Khider, T. and Karrar, I., 2002. Alkaline pulping with additives of kenaf from Sudan. Industrial Crops and Products, 15, 229-235.

-Lucia, L.A. and Jameel, H., 2006. High Selectivity Oxygen Delignification.Institute of Paper Science and Technology, Georgia Institute of Technology, Atlanta.

-Marandi, M.A.B., 2009. The Effects of Xylanase in Prebleaching of Bagasse Kraft Pulp. M.Sc. thesis, Department of Wood Science and Technology, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan.

-Mohta. D., Kapoor, S.K. and Ray, A.K., 1998. Environmentally Friendly Pulping and Bleaching of Bagasse. University of Roorkee, Saharanpur-247 001, U.P., India.

-Mohta. D., Upadhaya, J.S., Kapoor, S.K., Roy, A.K. and Roy, D.N., 1998. Oxygen Delignification of Soda and Soda-AQ Bagasse Pulps. Tappi 81(6): 184-187.

-Saraeian, A.R. and Khalili, A., 2013. Technology of pulp production by kraft process. Ayij, Tehran, 306p.

-Seth, R.S., 2006. The importance of fibre straightness for pulp strength. Journal of Pulp & Paper Canada, 107(1): 34-42.

-Shakhes, J., Zeinaly, F., Marandi, M.A.B. and Saghafi, T., 2010. The effects of processing variables on the soda and soda-aq pulping of kenaf bast fiber. Bioresources, 6(4): 4626-4639.

-Shakhes, J., Zeinaly, F., Marandi, M.A.B. and Saghafi, T., 2012. Effects of harvest time and cultivar on yield and physical properties fibers of kenaf (Hibiscus cannabinus L.). African Journal of Biochemistry Research, 6(6): 69-74.

-Singh, R.P., 1991. The bleaching of pulp. TAPPI Press, Atlanta, 694p.

-Sixta, H., 2006. Handbook of pulp. Strauss GmbH, Morlenbach, 1352p.

-Smook, G.A., 1992. Handbook for Pulp & Paper Technologists. Vancouver, 419p.

-Suess, H.U., 2010. Pulp bleaching today. Walter de Gruyter GmbH & Co. KG, Berlin/New York, 310p.

-Tao, L., Genco, J.M., Cole, B.J.W. and Fort, R.C., 2011. Selectivity of oxygen delignification for southern softwood kraft pulps with high lignin content. Tappi Journal, 83(1): 29-39.

-TAPPI, 2006-2007. TAPPI Test Methods, TAPPI. Norcross, GA 30092 USA.

-Ververis, C., Georghious, K., Christodoulakis, N. and Santos, R., 2003. Fiber, dimension, lignin and cellulose content of various plant materials and their suitability for paper production. Athens G.R., 1(1): 57-84.

-Walker, J.C.F., 2006. Primary wood processing: Principles and practice. Springer, Dordrecht, 606p.

-World Bank, 1998. Pollution prevention and abatement Handbook: Pulp and Paper mills. Draft technical background document. Environment Department, Washington, D.C., 395-400.

-Zeinaly, F. and Kazemi Tabrizi, A., 2015. Investigating the effect of kenaf bast and whole stalk pulp use in combination with recycled packaging pulp on produced paper properties. Renewable Natural Resources research, 5(4): 77-92.

-Zeinaly, F., Saraeian, A.R., Aryaie Monfared M.H. and KazemiTabrizi, A., 2016.Investigating the effect of using oxygen delignification process on bagasse soda pulp properties. Iranian Journal of Wood and Paper Science Research, 31(2): 261-279.

-Zeinaly, F., Shakhes, J., Dehghani, M. and Shakeri, A., 2009. Hydrogen peroxide bleaching of CMP pulp using magnesium hydroxide. Bioresources, 4(4): 1409-1416.

Investigating the effect of using oxygen delignification process on kenaf bast kraft pulp properties

References

References

Volume 33, Issue 3 - Serial Number 64September 2018Pages 369-380

Volume 33, Issue 3 - Serial Number 64
September 2018
Pages 369-380