Journal
JOURNAL OF CHEMICAL THERMODYNAMICS
Volume 64, Issue -, Pages 65-70Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jct.2013.05.001
Keywords
VLE; Boiling point temperature; Biodiesel; Soybean oil; UNIQUAC model
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Funding
- CNPq
- Pro-Engenharias/CAPES [076/2008]
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In this work, experimental boiling point temperatures for pseudo-binaries (methyl/ethyl biodiesel + methanol/ethanol) and pseudo-ternaries (methyl/ethyl biodiesel + methanol/ethanol + glycerol/water) systems were measured at several pressures ranging from (6.7 to 66.7) kPa using an Othmer-type ebulliometer. The systems investigated show a non-ideal behavior, with positive deviations from Raoult's law. It was observed that the addition of up to 10 wt% of alcohol (methanol or ethanol) led to a significant decrease in the boiling point temperature of the systems. The UNIQUAC model was successfully used to represent the experimental results, with an overall average deviation between experimental and calculated boiling temperature values of 0.004%. (C) 2013 Elsevier Ltd. All rights reserved.
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