The Lipid/oil was extracted from reduced dried primary sewage sludge particle using soxh let extraction method with the mixture of chloroform and n-hexane in ratio 2:1 as the extracting solvent. The extracted oil was transesterified to produce biodiesel. The lipid gave 7.969% percentage yield with density of 0.855g/ml, specific gravity value of 0.855. The chemical analyses revealed acid value of 0.84mg/NaOH/g, free fatty acid value of 0.40% and saponification value was 1.30mg. The lipid/oil was brownish black in colour with a pungent smell. The physicochemical analyses of the biodiesel produced gave a percentage yield of 32% biodiesel, density of 0.834Kg/ml, pH value of 8.97, specific gravity of 0.834, acid value of 0.29mg KOH/g,saponification value of 1.30 mg, free fatty acid value of 0.145 It is thus apparent that the feedstock (primary sewage sludge) may be a good source for the production of biodiesel.
lipids, primary sewage sludge, biodiesel
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