(732d) The Extraction of Hexadecanoic Acid From Oil Palm Empty Fruit Bunch Using Supercritical CO2
AIChE Annual Meeting
2013
2013 AIChE Annual Meeting
Separations Division
Extractions in Bioprocessing
Thursday, November 7, 2013 - 4:15pm to 4:35pm
This paper highlights the conversion study of oil palm empty fruit bunch to bio-oil using supercritical carbon dioxide (SC-CO2). While maintaining the amount of feed which is 10g and particle size of less than 150µm, effects of process conditions such as temperature within the range of 60-90̊C, pressure within 25-50 MPa and flow rate of CO2 within 3-6ml/min are investigated within two hours of extraction time. The product is diluted in 10ml dichloromethane (DCM) for the analysis using gas chromatography-mass spectrometry (GC-MS). The composition of fatty acid, ester, alcohol and other long chain hydrocarbon varies depending on the process condition. Hexadecanoic acid known as palmitic acid and dodecanoic acid 1, 2, 3-propanetriyl ester are identified as the major components of the bio oil. Approximately about 53% percent of hexadecanoic acid is produced when the temperature and pressure is at the highest value which is 90 ̊C and 50 MPa respectively, while the flow rate of CO2 is maintained at 5ml/min. When the extraction pressure and flowrate of CO2 are kept constant at 40MPa and 5ml/min respectively, the amount of hexadecanoic acid obtained reduced with temperature. In addition, the ester composition is increased from 17% to 24% when the temperature is decreased from 80°C to 60°C. At constant temperature and pressure of 70 ̊C and 40 MPa, both amount of ester and hexadecanoic acid reduced when the flow rate of CO2 is reduced from 6ml/min to 3 ml/min.
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