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Egi Agustian
Research Center for Chemistry, Indonesian Institute of Sciences
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Materials Science & Nanotechnology

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Esterification of Waste Cooking Oil Using Ultrasonic: Kinetic Study Egi Agustian; Jessica Jessica; Pudji Untoro; Anny Sulaswatty
Jurnal Kimia Terapan Indonesia Vol 20, No 2 (2018)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (521.053 KB) | DOI: 10.14203/jkti.v20i2.397

Abstract

Waste cooking oil (WCO) have a great potential as an alternative raw material for producing biodiesel. The literatures kinetic of the esterification of WCO in the presence of phosphoric acid catalyst with ultrasonic assisted are rare and most literatures used conventional method. This study aims to determine the optimum condition and the parameters of first and second order kinetics of the WCO esterification which was assisted by ultrasonic bath. Variables that used in this study are methanol/oil mole ratio, acid catalyst concentration and reaction temperature. The highest conversion was 42.08% with methanol/oil mole ratio of 15:1, a catalyst (phosphoric acid) concentration of 9% wt and temperature of 50oC within 90 minutes. The reaction time was reduced to 3 times (minute) compare to conventional method and fatty acid reduced 42%. Kinetic parameters were calculated with assumption that the esterification was the irreversible reaction. The reaction rate constant increasing with temperature. The value of activation energy for esterification of WCO is 42.94 kJ/mol for first order reaction and 35.30 kJ/mol for second order reaction.
Simple Purification of Vetiver Oil by Multiglass Plate System for Quality Improvement Evi Yanto; Egi Agustian; Anny Sulaswatty
Jurnal Kimia Terapan Indonesia Vol 18, No 02 (2016)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (222.315 KB) | DOI: 10.14203/jkti.v18i02.86

Abstract

Vetiver oil is one of essential oil from Indonesia which no synthetic substitute is available. The drawback of vetiver oil from Indonesia is smoky odor and dark appearance. To increase added value of Indonesian vetiver oil, therefore it is need method with cheap production, simple and easy to operate. Multiglass plate system (MGS) is one method to increase added value of vetiver oil. The aim of this research is to improve the vetiver oil quality in terms of appearance, odor and the physicochemical properties by MGS method and also optimize the operation condition on the vetiver oil yield and total vetiverol contents. The process parameters used on this research are to optimize the flow rate, angular and amount of glass plate. As a result,  was  obtained the optimum condition in 0.38 ml/sec of flow rate, 3o of glass plate angular and 5 of glass plate to increase 15% of total vetiverol contents, while the yields decreased until 5.6%. Refined vetiver oil by MGS are almost meet fulfill with Indonesia National Standard number 06-2386-2006 except total vetiverol contents and odor. Even though, the total vetiverol content increased and the odor became slightly smoky compare to raw material. Based on the results, MGS method can give higher purification of vetiverol of increase vetiver oil quality with easy to handle, low cost operation and also can moved to anywhere due to portable unit and mobile system.
Co-Authors ANNY SULASWATTY Anny Sulaswatty Evi Yanto Jessica Jessica Pudji Untoro