Pollution Research Paper

Vol 37, Issue 4, 2018; Page No.(1084-1092)

COMPARATIVE PERFORMANCE AND EMISSION CHARACTERISTICS OF METHYL ESTERS FROM WASTE COOKING OIL AND USED PALM OIL USING A SOLID ACID CATALYST

S. ABDUL BASHEER AND A. ANITHA

Abstract

Production of biodiesel from used oils as diesel substitute is particularly important because of the decreasing oil reserves and the environmental problems associated with the use of fossil fuels. In this study, Biodiesel was synthesized from high acid value Waste Cooking Oil (WCO) and Used Palm Oil (UPO) using synthesized nanoparticles of 12-tungstophosphoric acid (TPA) catalyst. Under optimized conditions the biodiesel yield was 91% from WCO and 96.5% from UPO. The methyl esters obtained from WCO and UPO were found to be in accordance with the ASTM standards for biodiesel. Performance characteristics of biodiesel obtained from WCO and UPO were studied on a four stroke diesel engine under loaded conditions. The results show an increase in Brake Thermal Efficiency (18.6 & 8.1 %) and Mechanical Efficiency (23 & 16.5 %) for biodiesel obtained from WCO and UPO when compared with diesel. Nanoparticles of TPA successfully reduced the NOx emission by 42 % and 19 %, respectively in contrast to diesel

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