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Impact of Lignin Determination Method on Oxygen Delignification Chemistry

Shin Soo-Jeong (Faculty of Paper Science and Engineering, State University of New York, College of Environmental Science and Forestry(SUNY-ESF))
Lai Yuan-Zong (Faculty of Paper Science and Engineering, State University of New York, College of Environmental Science and Forestry(SUNY-ESF))

Publication Information

Journal of Korea Technical Association of The Pulp and Paper Industry / v.37, no.5, 2005 , pp. 50-55 More about this Journal

Abstract

In previous report, we investigated the impact of hexeneuronic acid and some residual extractiveson lignin determination. These non-lignin components severely interfered lignin content determination which also affect on the oxygen delignification comparison between aspen and pine unbleached kraft pulps. Very different pattern was observed whether based on uncorrected conventional kappa number or based on corrected kappa number in oxygen delignification comparison. Lower kappa number aspen pulps showed poor response to oxygen delignification when kappa number was used as lignin determination method but better response with using the acid lignin method. Phenolic hydroxyl group in kraft pulps were also compared based on uncorrected or corrected kappa numberfor lignin content. Based on uncorrected kappa number, lower kappa number oxygen-delignified pulps had lower phenolic hydroxyl group. However, lower kappa number oxygen-delignified pulps showed much higher phenolic hydroxyl group based on the corrected lignin content. For accurate comparison for residual lignin properties from different pulps, lignin determination should be corrected from non-lignin components contribution to lignin.

Keywords

kraft pulp; oxygen delignification; phenolic hydroxyl group; residual lignin; extractives; hexeneuronic acid; lignin determination;

Citations & Related Records

Reference

1	Shin, S.-J., Schroeder, L.R., and Lai, Y.-Z., J., Impact of Residual Extractives and Hexenuronic Acid on Lignin Determination of Kraft Pulps. J. Korea TAPPI 36(5): 62 (2004)
2	Chai, X.-S., A Simple and Rapid Method to Determine Hexeneuronic Acid Groups in Chemical Pulps. J. Pulp Pap. Sci., 27(5): 165 (2001)
3	Kumar, K.R., Chang, H.-M., and Jameel, H., Estimation of Phenolic Hydroxyl Content in Various Kraft Pulps. In International Pulp Bleaching Conference. Helsinki, Finland, Book 2, p. 603, (1998)
4	Lai, Y.-Z., 'Determination of Phenolic Hydroxyl Groups', in Methods in Lignin Chemistry (edited by Lin, S.Y.,and Dence, C.W.), Springer-Verlag, New York P.423 (1992)
5	Chirate,C. and Lachenal, D., 'Limits of Oxygen Delignification,', in Pulping Confer. (Montreal, Quebec, Canada), Proc., p. 619,TAPPI Press, Atlanta (1998)
6	Carter, D., McKenzie, D., Johnson, A. and Idner, K, Performance Parameters of Oxygen Delignification, Tappi 80(10):111 (1997)
7	Shin, S.-J., Schroeder, L.R. and Lai, Y.-Z., Impact of residual extractives on lignin determination in kraft pulps. J. Wood Chem. & Technol. 24(2): 139 (2004)
8	Moe, S. T. and Ragauska, A.J., Oxygen Delignification of High-yield Kraft Pulp, Part 1. Structural properties of residual lignin. Holzforschung, 53: 416 (1999) DOI
9	McDonough, T.J., 'Oxygen Delignification', in Pulp Bleahing, Principles and Practice (edited by Dence, C.W. and Reeve, D.W), TAPPI press, Atlanta p.215 (1996)
10	Sun, Y.J. and Argyropoulos, D.S., Fundamentals of High-Pressure Oxygen and Low-Pressure OxygenPeroxide (Eop) Delignification of Softwood and Hardwood Kraft Pulps; Comparison, in Pulping Confer. (Montreal, Quebec, Canada), Proc., p. 457, TAPPI Press, Atlanta (1996)
11	Moe, S. T. and Ragauska, A.J., Oxygen Delignification of High-yield Kraft Pulp, Part 1. Structural properties of residual lignin. Holzforschung, 53: 416 (1999) DOI
12	Gellerrstedt, G., Gustafsson, K., and Lindfors, E.V., Structural Changes in Lignin during Oxygen Bleaching. Nordic Pulp and Paper Res. J. 1(3):14 (1986) DOI