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COMBUSTION ANALYSIS OF ALGAL OIL METHYL ESTER IN A DIRECT INJECTION COMPRESSION IGNITION ENGINE

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Author(s): HARIRAM V. | G. MOHAN KUMAR

Journal: Journal of Engineering Science and Technology
ISSN 1823-4690

Volume: 8;
Issue: 1;
Start page: 77;
Date: 2013;
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Keywords: Spirulina sp | Combustion | Transesterification | Photobioreactor | Biodiesel

ABSTRACT
Algal oil methyl ester was derived from microalgae (Spirulina sp). The microalga was cultivated in BG 11 media composition in a photobioreactor. Upon harvesting, the biomass was filtered and dried. The algal oil was obtained by a two step solvent extraction method using hexane and ether solvent. Cyclohexane was added to biomass to expel the remaining algal oil. By this method 92% of algal oil is obtained. Transesterification process was carried out to produce AOME by adding sodium hydroxide and methanol. The AOME was blended with straight diesel in 5%, 10% and 15% blend ratio. Combustion parameters were analyzed on a Kirloskar single cylinder direct injection compression ignition engine. The cylinder pressure characteristics, the rate of pressure rise, heat release analysis, performance and emissions were studied for straight diesel and the blends of AOME’s. AOME 15% blend exhibits significant variation in cylinder pressure and rate of heat release.
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