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  • Title: Kinetics studies of synthesis of biodiesel from waste frying oil using a heterogeneous catalyst derived from snail shell.
    Author: Birla A, Singh B, Upadhyay SN, Sharma YC.
    Journal: Bioresour Technol; 2012 Feb; 106():95-100. PubMed ID: 22206916.
    Abstract:
    Waste frying oil was used to produce biodiesel using calcined snail shell as a heterogeneous base catalyst. Trans esterification reactions were carried out and the yield and conversion of the product were optimized by varying the methanol to oil molar ratio, catalyst amount, reaction temperature, and time. A biodiesel conversion of 99.58% was obtained with a yield of 87.28%. The reaction followed first order kinetics. The activation energy (E(A)) was 79kJ/mol and the frequency factor (A) was 2.98×10(10)min(-1). The fuel properties of the biodiesel were measured according to ASTM D 6751 and found to be within the specifications. Snail shell is a novel source for the production of heterogeneous base catalyst that can be successfully utilized for synthesis of biodiesel of high purity.
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