Research Progress of Biobleaching of Pulp LMS

Zhan Huaiyu Fu Shiyu Yu Li Abstract: The recent advances in biobleaching of pulp LMS, including mediators for laccase bleaching, reaction of lignin and carbohydrates in LMS biobleaching, and bleaching reaction kinetics, are illustrated. Biobleaching study results. Keywords pulp laccase/mediator system biobleaching Progress in the Research of Pulp LMS Biobleaching Zhan Huaiyu Fu Shiyu Yu Li (South China University of Technology, Guangzhou, 510641) ABSTRACT Progress in the research of pulp LMS (laccase-mediator-system) Biobleaching is reviewed. chemical mediator used in laccase bleaching, reactions of lignin and carbohydrate during LMS treatment, reaction kinetics of LMS biobleaching, as well as some research results of pulp biobleaching have been introduced.KEYWORDS pulp,laccase-mediator-system,biobleaching The project is supported by the National Natural Science Foundation of China (29777010), the Doctoral Science Foundation of Colleges and Universities, and the Natural Science Foundation of Guangdong Province (970494). Zhan Huaiyu (State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640) Fu Shiyu (State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640) Yu Li (State Key Laboratory of Pulp and Paper Engineering, South China University of Technology) Guangzhou, 510640) References [1] Viikari L., Ranua M., Kantelinen A., et al. Bleaching with enzymes. in: Proceedings of Third International Conference on Biotechnology in the Pulp & Paper Industry. Stockholm. 1986, 67- 69[2]Paice MGEnzyme-Basics and mill applications.Emerging Pulping and Bleaching Technologies Workshop, TAPPI/North Carolina State University, 1995, NC, USA[3]Bourbonnais R.,Paice MGDemethylation and delignification of kraft pulp by Trametes versicolor laccase in The presence of ABTS, Appl. Microbiol. Biotechnol, 1992, 36:823-827 [4] Call HP, Muecke I. Applications of the laccase-mediator-system, Emerging Pulping and Bleaching Technologies Workshop, TAPPI/North Carolina State University. 1995, NC, USA[5] Call HP, WO 94/29510, December 22, 34 cl Aims, 22P, 1994[6] Paice MG, Bourbonnais R., Archibald FS, et al. Delignification mechanisms for the bleaching of kraft pulps with the enzymes laccase and rubber peroxidase.in: Proceedings of 10th International Symposium on Wood & Pulping Chemistry ( 10th ISWPC), Yokohama, Japan, 1999, Vol. I, 578-582 [7] Fu SY, Zhan HY, Yu HS Biobleaching of eucalyptus urophylla kraft pulp by laccase and mediator, in: Proceedings of 10th ISWPC, Yokohama, Japan. 1999, Vol. III, 76-78[8] Kawai S, Nakagawa M, Asukai M, et all. Degradation of nonphenolic β-O-4 substructure and of polymeric lignin model compounds by laccase of Trametes versicolor in the presence of l- Hydroxy benzotriazole, in: Proceedings of 10th ISWPC, Yokohama, Japan, 1999, Vol. III, 72-75 [9] Levlin KP, Tamminen T., Rajanen K., et al. Suitability of laccase/mediator system for hardwood kraft pulp Delignification, in: Proceedings of 10th ISWPC, Yokohama, Japan, 1999, Vol. I, 556-561 [10] Balakshin M., Capanema E., Chen CL, et al. Ligninin in pulp biobleachin g with laccasemediator system, in: Proceedings of 10th ISWPC, Yokohama, Japan, 1999, Vol. I, 572-577 [11] Levlin KP, Wang W., Ranua M. TCF bleaching of laccase/mediator-treated kraft pulps, in : Proceedings of International Pulp Bleaching Conference, Helsinki, 1998, Book 1, 77-85 [12] Potthast A., Rosenau T., Kosma P., et al. Chemistry and kinetics of the laccase-mediator system, in: Proceedings of 10th ISWPC, Yokohama, Japan, 1999, Vol. I, 596-601 [13] Nelson PJ, Chin CWJ, Viikari L., et al. The use of a laccase-mediator stage in bleaching of eucalypt kraft pulps, in: Proceedings Of International Pulp Bleaching Confesence, Helsinki, 1998, Book 2, 349-354 Received: 2000-01-12 (Revised)