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ALKALI – CATALYSED PRODUCTION OF BIODIESEL FUEL FROM NIGERIAN CITRUS SEEDS OIL

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Author(s): Agarry, S.E | Aremu, M.O | Ajani, A.O | Aworanti, O.A

Journal: International Journal of Engineering Science and Technology
ISSN 0975-5462

Volume: 5;
Issue: 9;
Start page: 1682;
Date: 2013;
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Keywords: Biodiesel | orange seeds oil | grape seeds oil | tangerine seeds oil | petroleum diesel | fuel properties.

ABSTRACT
The potential of oil extracted from the seeds of three different Nigerian citrus fruits for biodiesel production was investigated. Fatty acid alkyl esters were produced from orange seed oil, grape seed oil and tangerine seed oil by transesterification of the oils with ethanol using potassium hydroxide as a catalyst. In the conversion of the citrus seed oils to alkyl esters (biodiesel), the grape seed oil gave the highest yield of 90.6%, while the tangerineseed oil and orange seed oil gave a yield of 83.1% and 78.5%, respectively. Fuel properties of the seed oil and its biodiesel were determined. The results showed that orange seed oil had a density of 730 Kg/m3, a viscosity of 36.5 mm2/s, and a pour point of - 14oC; while its biodiesel fuel had a density of 892 Kg/m3, a viscosity of 5.60 mm2/s, and a pour point of - 25oC. Grape seed oil had a density of 675 Kg/m3, a viscosity of 39.5 mm2/s, and a pour point of - 12 oC, while its biodiesel fuel had a density of 890 Kg/m3, a viscosity of 4.80 mm2/s, and a pour point of - 22oC. Tangerine seed oil had an acid value of 1.40 mg/g, a density of 568 Kg/m3, a viscosity of 37.3mm2/s, and a pour point of - 15oC, while its biodiesel fuel had an acid value of 0.22 mg/g, a density of 895 Kg/m3, a viscosity of 5.30 mm2/s, and a pour point of - 24oC.
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