Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference (한국펄프종이공학회:학술대회논문집)

Korea Technical Association of the Pulp and Paper Industry (한국펄프종이공학회)
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Study on the Mass Transfer Behavior of AQ and Its Effectiveness during AQ-Kraft Pulping Process

  • Huang, Xiannan (School of Light Industrial and Food Engineering, Guangxi University) ;
  • Song, Hainong (School of Light Industrial and Food Engineering, Guangxi University) ;
  • Qin, Chengrong (School of Light Industrial and Food Engineering, Guangxi University) ;
  • Yoon, Sung-Hoon (Institute of Raper Science and Technology, Georgia Institute of Technology) ;
  • Chai, Xin-Sheng (School of Light Industrial and Food Engineering, Guangxi University)
  • Published : 2006.06.06
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Abstract

Studies of the effectiveness of anthraquinone (AQ) in kraft-AQ pulping in terms of its mechanism of mass transfer have been conducted. Experiments performed have demonstrated an 'apparent solubility' of AQ in caustic solutions of wood lignin. The adsorption behavior of AQ species was also analyzed. Anthraquinone-2-sulfonic acid (AQ-S), a water-soluble derivative of AQ, showed selective adsorption on wood. A mechanism for the transport of AQ into wood chips during kraft pulping are proposed, and some explanations for previously unexplained observations are addressed.

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