Yerizam Yerizam’s research while affiliated with Politeknik Negeri Sriwijaya and other places

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Publications (1)


Table 1 . The characteristics of waste cooking oil
Biodiesel Production from Waste Cooking Oil
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  • Full-text available

October 2018

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38,580 Reads

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31 Citations

Indonesian Journal of Fundamental and Applied Chemistry

Endang Sri Rahadianti

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Yerizam Yerizam

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Martha Martha

Increased energy consumption and the depletion of petroleum reserves have pushed up oil prices globally. The diminishing petroleum reserves are a problem inherent in this type of fossil energy. One alternative energy source that has the potential to be developed in Indonesia is biodiesel. Used cooking oil or used cooking oil is a potential raw material for making biodiesel. In this study biodiesel was made from used cooking oil and methanol using the transesterification method with KOH catalyst. The production of biodiesel from used cooking oil begins with mixing raw materials of used cooking oil collected into one. The mixture is then precipitated for 24 hours. The transesterification process was carried out by mixing KOH (1% of oil weight) with methanol (ratio of methanol: oil 6: 1) at a temperature of 65 o C. After the temperature is reached, the methanol and KOH solution is added slowly while pumping (stirring), with a variation of time 30, 45, 60.75 and 90 minutes. Biodiesel purification is done by washing using hot water (temperature 70 C) twice as much washing. Characteristics of biodiesel based on the best conditions for density 0.886 g / mL, viscosity 5.89 cSt, FFA 0.11% , acid value 0.256 mgKOH/g and flash point 170.52 o C. The biodiesel products based on these parameters meet SNI 7182-2015 standards.

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Citations (1)


... High viscosity of biodiesel affects the atomization of combustion and other flow losses. High acid value will be corrosive to the engine because there is still free fatty acid in biodiesel [37]. Next, characterization of the synthesized methyl ester functional groups was carried out using infrared (IR). ...

Reference:

Conversion of Waste Cooking Oil with Transesterification Process in Ultrasonicator using SrO-KF Catalyst
Biodiesel Production from Waste Cooking Oil

Indonesian Journal of Fundamental and Applied Chemistry