Coag-Flocculation of Phosphorus Containing Waste Water Using Afzella-Africana Biomass
K.A. Babayemi, O.D Onukwuli, A.O. Okewale

Abstract
Affzella- Africana (AF), an eco-friendly biomass was used as a coagulant in this work for the waste water treatment. AF was characterized and the result of characterization shows that, the percentage content of the active agent responsible for the coagulation (protein) is 33.75%. The result of effluent analysis before and after treatment indicates that 90.57%, 37.51%, 89.94% and 84.95% of phosphorus, magnesium, sulphates and chlorides have been removed. Also that, no traces of iron, lead, copper and nitrates concentration of which were respectively 2.75mg/l, 0.90mg/l, 12.00mg/l and 0.10mg/l in the initial sample were found after treatment. Coagulation kinetics parameters such as order of reaction, α and rate constant, K were determined. Coagulation performance was measured in nephelometric jar test. Maximum parameter values are recorded at K of 5x10- 4l/mg.min, α of 2 and optimum pH of 6.

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