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The Effect of Pressing Technique and Alkaline Catalysts (KOH) on Quality of Biodiesel from Candlenut Seeds (Aleurites moluccana)
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| Author:
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FBA FITRIANI, D FRANSISCO PURBA, Y LESTARI, A PRIHARTANTYO
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| Abstract:
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The use of fossil fuels continues to increase while the reserves of fossil materials are depleting. The price of fossil fuels also continues to increase, and the resulting environmental emissions are high. That is the background of the use of renewable fuels called biodiesel. One source of vegetables used as a source of biodiesel is candlenut (Aleurites moluccana) because it contains many free fatty acids. This study aims to determine the maximum conditions for the obtained of biodiesel and analyze its quality as fuel. The candlenut was sorted and heated to reduce the moisture content. Candlenut seeds pressed using a screw press to obtain candlenut oil. Transesterification reaction using an alkaline catalyst (KOH) was a reaction used to produce methyl esters then used as biodiesel. Transesterification results were analyzed using Gas Chromatography-Mass Spectroscopy (GC-MS). The variation of this research was the waiting time after setting-up of the heating mantle, namely are 5, 10, and 15 minutes, and the concentration variations of KOH catalyst are 0.5, 0.75, and 1.0%. The results indicate that the pre-treatment of candlenut seeds produced optimal candlenut oil at 10 minutes of waiting time with a yield of 59.1%. The biodiesel conversion results that the highest yield indicate was 98.08% at 1% KOH concentration. Based on the biodiesel quality test on SNI 7182: 2015, the biodiesel produced meets quality standards for diesel fuel.
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| Keyword:
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Biodiesel, Candlenut, KOH Catalyst, Screw Press, Transesterification
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| EOI:
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| DOI:
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https://doi.org/10.31838/ijpr/2020.12.02.367
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| Download:
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