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

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

Evaluation of Stock Flocculation Phenomena Based on Turbidity Measurement

탁도 측정을 통한 지료의 응집거동 평가

  • Lee, Ji-Young (Dept. of Forest Products/IALS, Gyeongsang National Univ.) ;
  • Youn, Hye-Jung (Dept. of Forest Science, College of Agriculture and Life Sciences, Seoul National Univ.) ;
  • Lee, Hak-Lae (Dept. of Forest Science, College of Agriculture and Life Sciences, Seoul National Univ.)
  • 이지영 (경상대학교 임산공학과/농업생명과학연구원) ;
  • 윤혜정 (서울대학교 농업생명과학대학 산림과학부 및 농업생명과학연구원) ;
  • 이학래 (서울대학교 농업생명과학대학 산림과학부 및 농업생명과학연구원)
  • Published : 2008.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

Flocculation phenomena of the stock mixed with cellulosic fibers, fillers and polymers were investigated by a new turbidity measurement system consisted of a probe-type turbidimeter, data acquisition system and computer. The probe-type turbidimeter allowed to measure the real time flocculation of the stock induced by single polymer and microparticle systems. Flocculation phenomena were evaluated by average and final relative turbidity indices. Turbidity and flocculation showed inverse relationship, i.e. the turbidity decreased with the formation of flocs. Relative turbidity of the stock treated with microparticle system was lower than that of the stock containing single polymer system, which indicated that the microparticle system showed greater floc forming efficiency than single polymer system.

Keywords

References

  1. Hubbe, A. M. and Wang, F. : Where to add retention aid: issues of time and shear. Tappi J. 1(1): 28-33 (2002)
  2. Burgess, S. M., Curley, E. J., Wiseman, N. and Xiao, H. : On-line optical determination of floc size. Part I: Principles and Technique. J. Pulp & Paper Sci. 28(2): 63-65 (2002)
  3. Blanco, A., Fuente, E., Negro, C., Monte, C. M., and Tijero, J. : Focused beam reflectant measurement as a tool to measure flocculation. Tappi J. 1(10): 14-20 (2002)
  4. Huber, P., Pierre, C., Bermond, C. and Carré, B. : Comparing the fiber flocculation behavior of several wet-end retention systems. Tappi J. 3(4): 19-24 (2004)
  5. Ovenden, C. and Xiao, H. : Flocculation behavior and mechanisms of cationic inorganic microparticle/ polymer systems. Colloids and Surfaces 197: 225-234 (2002) https://doi.org/10.1016/S0927-7757(01)00903-7
  6. Swerin, A., Sjodin, U. and Odberg, L. : Flocculation of cellulosic fibre suspensions by model microparticle retention aids systems. Nordic Pulp & Paper Reserch J. 1: 22-29 (1996)