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Evaluation of Stock Flocculation Phenomena Based on Turbidity Measurement  

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.)
Publication Information
Journal of Korea Technical Association of The Pulp and Paper Industry / v.40, no.4, 2008 , pp. 10-15 More about this Journal
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
flocculation phenomena; turbidimeter; relative turbidity; single polymer; microparticle;
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