Journal of Korea Technical Association of The Pulp and Paper Industry (펄프종이기술)

Korea Technical Association of the Pulp and Paper Industry (한국펄프종이공학회)
권호 표지

Non-chlorine Bleaching of Oak Kraft Pulp by Ozone

오존을 이용한 신갈나무 크라프트펄프의 무염소표백

  • 김동호 (고려대학교 대학원 산림자원학과) ;
  • 백기현 (고려대학교 대학원 산림자원학과)
  • Published : 1997.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

Newly bleaching sequence using oxygen, ozone and hydrogen peroxide has introduced to avoid pollution hazards from chlorinated organic compounds, because chlorine dioxide substitution bleaching was produced a little chlorinated organic substance. Oxygen-type chemicals replaced for chlorine has attracted much research attention. Bleachability of ozone was improved at low temperature and high pulp consistency. In third bleaching followed OZ bleaching, addition of O2 and NaBH4 in alkali extraction was effective than only alkali extraction. Bleachability of pulps in ozone bleaching(Z) was improved at higher consistency and lower temperature The addition O2 and NaBH4 in alkali extraction after OZ bleaching sequence improved brightness, when compared to those obtained by only alkaline extraction. Pulps bleached by ECF bleaching sequences such as OZEoD and OZEopD was obtained by 90% ISO brightness. The brightness of pulp bleached by TCF sequences with the ozone dosage of 1.6% was approached to target brightness (88~90%ISO). Pulps bleached Z stage combined bleaching sequence was reduced the viscosity to a little greater extent. However, physical properties of pulps was not great different compared to those bleached by conventional bleaching sequences. A pollution index of bleaching effluente by ozone combined bleaching sequences was lower than by conventional bleaching sequence, but somewhat higher than multistage bleaching sequences combined C/D stage.

Keywords

References

  1. Tappi J. v.78 no.1 The role of water and hydrogen ion cincentration in ozone bleaching of kraft pulp at medium consistency Bouchard, J.;H. M. Nugent;R.M. Berry
  2. J. the Korea Society of Dyes and Finishers v.7 no.1 A study on the ebleaching and dyeing properties of cotton fabrics treated with ozone. Cho, H.;H.S. Woo;H. C. Jeong
  3. Tappi J. v.77 no.3 Bleaching mixed office waste to high brigftness Forsberg, P. M.;J. M. Genco
  4. Tappi J. v.72 no.9 Treating bleaching effluent for suspended solid and color Garcia - Heras, J.L.;Forster, C.F.
  5. Tappi J. v.77 no.6 Mill experience in high-consistency ozone bleaching of southern Pine pulp Gottlideb, P. M.;W. E. Nutt;S. R. Miller;T. S. Macas
  6. Japan Tappi . v.39 no.2 The state of the art in bleaching technology VI-technology on kraft Pulp bleaching with hydroperoxide and ozone Iwasaki, M.
  7. Japan Tappi. v.39 no.2 The state of the art in bleaching technologyVI-technology on KP bleaching with hydroperoxide and ozone Iwasaki, M.
  8. High-consistency ozone bleaching technology Tappi J. v.77 no.6 Kappel, J.
  9. Holzforschung. v.42 no.3 Full bleaching of ASAM pulps wothout chlorine compounds Kordachia, O.;R. Patt
  10. Tappi J. v.59 no.11 Reactions of lignin and lignin model compounds with ozone Kratzl, K.;P. Claus;G. Reichel
  11. J. Pulp and Paper Sci. v.12 no.2 Improvement of ozone prebleaching of Kraft pulps Lacheanal, D.;M. Bokstr m.
  12. Chemischtechnische unterschung modern frdie zell satff und papier fabrikation Merk, E. AG.
  13. Tappi J. v.77 no.11 Pilot-plant experience with ozone in TCF bleaching of eucalypt pulp Mokfienski A.;B.J. Demuner
  14. Proceedings bleaching pulps v.65 no.2 Model experients of the splitting of glycosidic bonds by ozone Pan, G. C.;C.L. Chen;H.M. Chang;J.S. Gratzl
  15. Tappi J. v.65 no.2 Ozone replace chlorine in the first bleaching stage Singh, R.P.
  16. Das papier v.45 Medium consistency ozone bleaching: laboratory and mill experience Sixta, H.;G. G. Tzinger;A. Schrittwieser;P. Hendel
  17. Pulp & Paper Canada v.97 no.10 A review and assessment of the ecological risks associated with the use of chlorine dioxide for the bleaching of pulp Solomon, K.;Berman, H.;Huggett, R.;Mackay, D.;McMague, B.
  18. Japan Tappi. v.46 no.10 Current ozone application for pulp and paper industries Tomiie, K.;K. Toyoda
  19. Tappi J. v.77 no.3 Bleaching of softwood kraft pulps with enzone process Yang, J.L.;D.H. Cates;S.E. Law;KE. L. Eriksson