BIODIESEL FROM BLACK ACID OIL USING KOH AND FE2(SO4)3 CATALYSTS
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Abstract
Thailand uses palm oil as a raw material for biodiesel, but palm oil production does meet the biodiesel demand. This study examined the production of biodiesel from black acid oil, using KOH and Fe2(SO4)3 as catalysts. We determined conditions such as the methanol to black acid oil volume ratio, reaction temperature, reaction time and catalyst loading that would optimize biodiesel yield. We found that the optimum yield of biodiesel occurred with methanol to black acid oil volume ratio 5:1; reaction at 70°C for 120 min; with 1.5 wt% of KOH and 1 wt% Fe2(SO4)3 loading. The biodiesel yield was 87.5% using KOH and 70.0% using Fe2(SO4)3 catalysts.
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