Synthesis of Biodiesel from Tobacco and Waste Frying Oil Using Heterogeneous KHCO3/Al2O3 Catalyst

    Published: Jan 2011

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    The transesterification of tobacco seed oil and used frying oil to methyl esters (biodiesel) was studied using potassium bicarbonate loaded on alumina as heterogeneous catalyst. Reaction parameters such as catalyst concentration, methanol to oil ratio, reaction time, and agitation speed on the conversion of tobacco seed and used frying oil were investigated. The catalyst loaded KHCO3 of 30 % m/m on Al2O3, after being calcined at 700°C for 6 h, was found to be the optimum catalyst. The quality of the methyl esters was tested according to the European standard EN 14214. The two types of biodiesel produced seemed to meet all the parameters of the European standard except the oxidation stability. In the case of used frying oil biodiesel, not only the oxidation stability was not met, but this biodiesel did not also meet the acid value and water content specifications.


    transesterification, heterogeneous solid catalyst, methyl esters, loading of KHCO, 3, on Al, 2, O, 3, calcination

    Author Information:

    Anastopoulos, G.
    National Technical Univ. of Athens, Athens,

    Deligiannis, A.
    National Technical Univ. of Athens, Athens,

    Kalligeros, S.
    Hellenic Organization for Standardization, Athens,

    Karonis, D.
    National Technical Univ. of Athens, Athens,

    Zannikos, F.
    National Technical Univ. of Athens, Athens,

    Lois, E.
    National Technical Univ. of Athens, Athens,

    Paper ID: STP49359S

    Committee/Subcommittee: D02.P0

    DOI: 10.1520/STP49359S

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