Liquid-liquid equilibria for the canola oil biodiesel plus ethanol plus glycerol system

abstract

The knowledge and accurate description of the phase equilibria of systems containing transesterification products are essential for a correct operation and optimization of the biodiesel production and purification units. To overcome the lack of phase equilibria information concerning systems from the transesterification reaction with ethanol, in this work, liquid-liquid equilibria data, tie-lines and phase boundaries, have been measured for the ternary system canola oil biodiesel + ethanol + glycerol at temperatures between 303.15 and 333.15 K. Following previous successful applications to other biodiesel systems, the Cubic-Plus-Association (CPA) equation of state was also applied here to predict the experimental data, using previously established interaction parameters, with average deviations inferior to 3%. (C) 2011 Elsevier Ltd. All rights reserved.

keywords

EQUATION-OF-STATE; PHASE-EQUILIBRIA; CPA EOS; MULTICOMPONENT SYSTEMS; MUTUAL SOLUBILITIES; ASSOCIATING SYSTEMS; ALCOHOL SYSTEMS; METHYL OLEATE; PREDICTION; WATER

subject category

Energy & Fuels; Engineering

authors

Oliveira, MB; Barbedo, S; Soletti, JI; Carvalho, SHV; Queimada, AJ; Coutinho, JAP

our authors

acknowledgements

Financial support was provided to LSRE by FEDER/POCI/2010.

Share this project:

Related Publications

We use cookies for marketing activities and to offer you a better experience. By clicking “Accept Cookies” you agree with our cookie policy. Read about how we use cookies by clicking "Privacy and Cookie Policy".