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Effect of mixture of alcohols on biodiesel properties which produced from waste cooking oils and compare combustion performance and emissions of biodiesels with petrodiesel

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Author(s): Mansourpoor Mojtaba | Shariati Ahmad

Journal: Advances in Environmental Sciences
ISSN 2066-7620

Volume: 4;
Issue: 3;
Start page: 153;
Date: 2012;
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Keywords: biodiesel | combustion efficiency | emission | renewable energy | waste cooking oil

ABSTRACT
Increasing the petroleum price and environmental problems have been driving forces to findalternative and renewable energy resources. Biodiesel has attracted the attention of many researchersdue to various advantages associated with its usages. Several aspects including the type of catalyst,molar ratio of alcohol to oil, temperature, purity of reactants and free fatty acid content have mainlyinfluence on transesterification. In this work, waste cooking oils and two types of alcohols with differentmolar ratio of methanol to ethanol and potassium hydroxide as catalyst were used as materials. Effect ofalcohol on the physical properties, combustion efficiency and emitted gases of biodiesels were studiedand compared with petrodiesel. Mixture of methanol and ethanol were used for transesterification inorder to optimize solvent property of methanol and rapid equilibrium using methanol. Waste cooking oilis considered as the most suitable material due to its availability and cost-effectiveness. To examine theperformance and emissions of biodiesels, a wet base semi-industrial boiler was used for combustion anda flue-gas analyzer has measured the emitted gases. Finally, physical properties of biodiesels weremeasured in Abadan’s Oil Refinery Laboratory.
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