PJB-2020-16
OPTIMIZATION OF BIODIESEL YIELD FROM JATROPHA OIL WIT HETEROGENEOUS NANO-CATALYSTS; CaO, KOH AND NaOH BY TRANSESTERIFICATION
Khawer Khan
Abstract
Synthesis of biodiesel from Jatropha curcus by transesterification is a kinetically controlled process. It depends upon molar ratio, mixing intensity, temperature, catalyst nature and quantity. The aim of this study was to explore the efficiency of Jatropha (Jatropha curcas) seed oil for biodiesel synthesis. In this effort two steps are used. First, free fatty acids in the Jatropha Oil are reduced to less than 1% and then oil was converted into biodiesel. Three nano-catalysts; calcium Oxide, potassium hydroxide and sodium hydroxide are used to produce biodiesel using same catalyst weight (0.171 gm.), Methanol (11 ml) and esterified jatropha oil (50 ml), stirring speed and time, heating temperature and duration. The resultant product contained soap, glycerin and methyl ester. Biodiesel was carefully separated and washed three times using hot distilled water. Fourier Transformation Infrared Spectroscopy and Gas Chromatography coupled with Mass Spectrometer are used to analyze the samples. The yield of methyl ester was 96%, 73% and 86% for the nano-catalysts calcium oxide, potassium hydroxide and sodium hydroxide, respectively. Biodiesel yield was 95%, 62% and 68% for nano-catalysts; CaO, KOH and NaOH, respectively. The properties of the produced biodiesel were in confirmation with the ASTMD 6751. The highest yield of biodiesel was obtained from calcium oxide nanoparticles. Key words: Biodiesel; Nanocatalyst; NaOH; CaO; KOH; FTIR, GC-MS
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