Flocculation Of Saccharomyces Cerevisiae With Grewiasppbiopolymers
Journal Title: RA Journal Of Applied Research - Year 2015, Vol 1, Issue 8
Abstract
Removal of Yeasts (Saccharomyces cerevisiae) by coagulation/flocculation with natural extracted polymer from Grewiaspp plant originated from Maroua (Cameroon) was studied. Experiments were conducted in a jar-test at different pH [4, 7.9], ionic strength [10-3 , 10-2 , 10-1 (M)], concentration of coagulant / flocculant (mg / L) [0.125-0. 25-0.375-0.5-0.625], turbidity [60NTU], and stirring speed / time [550s-1 /5 min and 100s- 1 /15 min]. Results showed that maximum reduction rate (35%) was obtained forpH 4, ionic strength 10-1M, and polymer concentration of 0.375 mg / L. With CaCl2, removal rateof yeast improves up to 90%. Charge neutralization and adsorption at pH 7, adsorption and bridging at pH 4, and flocculation at pH 9 were identified as mechanisms involved in this process.
Authors and Affiliations
Ndi K. S.
Keywords
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