Abstract：
:The aim of this study was to obtain experimental data related to liquid–liquid equilibrium (LLE) of systems containing glycerol + ethanol + ethyl biodiesel from macauba pulp oil, perform thermodynamic modeling and simulate the settling step of this biodiesel using simulation software. Binary interaction parameters were adjusted for NRTL and UNIQUAC models. The UNIFAC-LLE and UNIFAC-Dortmund models were used to predict the LLE of the systems. A sensitivity analysis was applied to the settling step to describe the composition of the output streams as a function of ethanol in the feed stream. Ethanol had greater affinity for the glycerol-rich phase. The deviations between experimental data and calculated values were 0.44%, 1.07%, 3.52% and 2.82%, respectively, using the NRTL, UNIQUAC, UNIFAC-LLE and UNIFAC-Dortmund models. Excess ethanol in the feed stream causes losses of ethyl ester in the glycerol-rich stream and high concentration of glycerol in the ester-rich stream.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Basso RC,da Silva CA,Sousa Cde O,Meirelles AJ,Batista EAdoi
10.1016/j.biortech.2012.12.190subject
Has Abstractpub_date
2013-03-01 00:00:00pages
468-75eissn
0960-8524issn
1873-2976pii
S0960-8524(13)00017-5journal_volume
131pub_type
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