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Wood Research and Technology

Holzforschung

Cellulose – Hemicelluloses – Lignin – Wood Extractives

Editor-in-Chief: Faix, Oskar / Salmén, Lennart

Editorial Board: Daniel, Geoffrey / Militz, Holger / Rosenau, Thomas / Sixta, Herbert / Vuorinen, Tapani / Argyropoulos, Dimitris S. / Balakshin, Yu / Barnett, J. R. / Burgert, Ingo / Rio, Jose C. / Evans, Robert / Evtuguin, Dmitry V. / Frazier, Charles E. / Fukushima, Kazuhiko / Gindl-Altmutter, Wolfgang / Glasser, W. G. / Holmbom, Bjarne / Isogai, Akira / Kadla, John F. / Koch, Gerald / Lachenal, Dominique / Laine, Christiane / Mansfield, Shawn D. / Morrell, J.J. / Niemz, Peter / Potthast, Antje / Ragauskas, Arthur J. / Ralph, John / Rice, Robert W. / Salin, Jarl-Gunnar / Schmitt, Uwe / Schultz, Tor P. / Sipilä, Jussi / Takano, Toshiyuki / Tamminen, Tarja / Theliander, Hans / Welling, Johannes / Willför, Stefan / Yoshihara, Hiroshi


IMPACT FACTOR 2017: 2.079

CiteScore 2017: 1.94

SCImago Journal Rank (SJR) 2017: 0.709
Source Normalized Impact per Paper (SNIP) 2017: 0.979

Online
ISSN
1437-434X
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Volume 66, Issue 3

Issues

Refiner bleaching in a peroxide-based ATMP process compared with conventional bleaching

Dmitri Gorski
  • nsiFOCUS, Norske Skog ASA, Halden, Norway
  • Fibre Science and Communication Network (FSCN), Mid Sweden University, Sundsvall, Sweden
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  • Other articles by this author:
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/ Lars Johansson / Per Engstrand
Published Online: 2011-09-13 | DOI: https://doi.org/10.1515/hf.2011.156

Abstract

The aim of this study was to compare refiner bleaching with conventional laboratory bleaching by means of hydrogen peroxide and magnesium hydroxide. Refiner bleaching in this study was a part of the ATMP (advanced thermo mechanical pulping) process, in which bleaching chemicals are added to the first stage refiner. Unbleached reference pulp which underwent similar mechanical treatment as refiner bleached pulp was used for laboratory bleaching. Bleaching efficiency was found to be almost equal for pilot scale refiner bleaching and conventional laboratory bleaching. A brightness increase of 10 ISO% was reached with addition of 26 kg t-1 hydrogen peroxide leading to a final brightness of 66 ISO% using both methods. Slightly more COD (52 kg t-1 compared with 46 kg t-1) was generated in refiner bleaching compared with conventional laboratory bleaching to equal brightness with the same chemicals added.

Keywords: advanced thermo mechanical pulping (ATMP); COD; hydrogen peroxide; magnesium hydroxide; refiner bleaching

About the article

Corresponding author. nsiFOCUS, Norske Skog ASA, N-1756, Halden, Norway Phone: +47-418-47-928


Received: 2011-01-12

Accepted: 2011-08-23

Published Online: 2011-09-13

Published in Print: 2012-03-01


Citation Information: Holzforschung, Volume 66, Issue 3, Pages 275–281, ISSN (Online) 1437-434X, ISSN (Print) 0018-3830, DOI: https://doi.org/10.1515/hf.2011.156.

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