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Characteristics of a bioflocculant produced by a consortium of Cobetia and Bacillus species and its application in the treatment of wastewaters

AM Ugbenyen, AI Okoh

Abstract


The characteristics of a bioflocculant produced by a consortium of 2 bacteria belonging to the genera Cobetia and Bacillus was investigated. The extracellular bioflocculant was composed of 66% uronic acid and 31% protein and showed an optimum flocculation (90% flocculating activity) of kaolin suspension at a dosage of 0.8 mg/m., pH of 8, and with Ca2+ as a coagulant aid. The bioflocculant is thermally stable, with a high residual flocculating activity of 86.7%, 89.3% and 87% after heating at 50oC, 80oC

Keywords: Extracellular, bioflocculant, consortium, characteristic, Cobetia sp., Bacillus sp.




http://dx.doi.org/10.4314/wsa.v40i1.17
AJOL African Journals Online