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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Comparison of Froth-flotation Efficiency between Fatty Acid and Non-ionic Surfactant Added to Recovered Paper with Increased Mixing Ratio of OMG

순환제지자원의 OMG비율 증가에 따른 지방산과 비이온성 계면활성제의 탈묵효율 비교

  • Seo, Jin Ho (Changgang Institute of Paper Science & Technology, Kangwon National University) ;
  • Lee, Kwang Seob (Changgang Institute of Paper Science & Technology, Kangwon National University) ;
  • Lee, Tai Ju (Changgang Institute of Paper Science & Technology, Kangwon National University) ;
  • Lee, Myoung Ku (Dept. of Paper Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University) ;
  • Ryu, Jeong Yong (Dept. of Paper Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University)
  • 서진호 (강원대학교 창강제지기술연구소) ;
  • 이광섭 (강원대학교 창강제지기술연구소) ;
  • 이태주 (강원대학교 창강제지기술연구소) ;
  • 이명구 (강원대학교 산림환경과학대학 제지공학과) ;
  • 류정용 (강원대학교 산림환경과학대학 제지공학과)
  • Received : 2015.08.04
  • Accepted : 2015.08.14
  • Published : 2015.08.30
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Abstract

The main sources of recovered paper for newsprint are old newsprint (ONP) and old magazine (OMG). Recently, a lot of advertisement flyers are flowing into bales of ONP and portion of OMG is increasing in recovered paper because the consumption level of coated paper increases. In this study, nonionic surfactant and fatty acid were used as the de-inking agent for froth-flotation process of mixed recovered paper to investigate the effect of increased mixing ratio of OMG. De-inking efficiency of nonionic surfactant decreased as the mixing ratio of OMG increased; ink removal efficiency of froth-flotation is poor, however, the reject ratio increases due to ash from OMG. In comparison with nonionic surfactant, the ash from OMG had a little effect on reject ratio and optical properties of fatty acid applied flotation accept. If nonionic surfactant and fatty acid are added to pulper and flotation cell sequentially, excessive ash from OMG may not give an adverse effect on de-inking efficiency of mixed recovered paper.

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References

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