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

Korea Technical Association of the Pulp and Paper Industry (한국펄프종이공학회)
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A Quantitative Analysis of Dissolved Starch in White Water by UV Spectroscopy

분광분석법을 이용한 공정백수에서의 전분 정량분석

  • Jung So-Hyun (Department of forest Products, Kookmin University) ;
  • Ryu Jeong-Yong (Pulp and farer Research Center, Korea Research Institute of Chemical Technology) ;
  • Kim Hyoung-Jin (Department of forest Products, Kookmin University)
  • 정소현 (국민대학교 임산공학과) ;
  • 류정용 (한국화학연구원 펄프제지연구센터) ;
  • 김형진 (국민대학교 임산공학과)
  • Published : 2005.12.01
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Abstract

Natural Com Starch(NCS) spray system has been widely used In multiply board mill for the better bonding strength between board layers. However the unsuitable NCS spray system could lead to a drop in plybond efficiency of multiply board. It could also result in the accumulation of unretained-starch in the white water system, which could not only rise in BOD and COD level but also reduce the effects of rosin-alum sizing system and other additives. In this study, the simple and rapid method by UV-spectroscopy for measuring the starch contents in the white water was proposed, and the quantitative analysis for dissolved starch content in white water was carried out in two kinds of board production process. It could be confirmed that about 150 ppm of oxidized starch was retained in white water dewatered from undertop ply of multiply board process, and about 470 ppm of natural starch was dissolved in white water originated from unsuitable spraying system in the multiply board production lines for cup base paper.

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References

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