화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.15, No.2, 217-223, March, 2009
DOI10.1016/j.jiec.2008.09.020  Export Citation
A deposition efficiency model for fiber.filler flocculation by microparticle retention system
Byoung-Uk Cho1, 2, †, Gil Garnier1, 3, Theo G.M. van de Ven4, and Michel Perrier5
  • 1Chem. Eng. Department, Pulp and Paper Research Centre, McGill University, 3420 University Street, Montreal, QC, H3A 2A7, Canada, Korea
  • 2Chemical Biotechnology Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 305-600, Republic of Korea
  • 3Department Chem. Eng., Australian Pulp and Paper Institute, Monash University, Clayton, Vic. 3800, Australia
  • 4Chemistry Department, Pulp and Paper Research Centre, McGill University, 3420 University Street, Montreal, QC, H3A 2A7, Canada
  • 5Department Chem. Eng., Ecole Polytechnique, P.O. Box 6079, Station Centre-ville, Montreal, QC, H3C 3A7, Canada
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A deposition efficiency model was developed in order to predict the effect of the dosage of retention aids (polymer and bentonite) on filler retention and validated with a pilot machine trial. The deposition efficiency is a function of the surface coverage of adsorbed and transferred polymer on solids (fiber and filler) and the surface coverage of microparticles on the polymer-adsorbed layer. The model includes the effect of bimodal particles (i.e., fiber and filler) and the polymer transfer from fiber to filler. In addition, the interaction between bare surfaces was included in the model and different bond strength of each interaction was considered. It was shown that an increase in the deposition efficiency leads to an increase in the filler retention. The dosage of CPAM is more predominant variable affecting deposition efficiency and thus filler retention than that of bentonite.
Keywords:Deposition efficiency model;Microparticulate retention aid system;Filler retention
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