TY - JOUR
T1 - Biodiesel production from waste cooking oil via supercritical methanol: Optimisation and reactor simulation
AU - Aboelazayem, O.
AU - Gadalla, M.
AU - Saha, B.
PY - 2018
Y1 - 2018
N2 - Biodiesel production using supercritical methanol in the absence of catalyst has been analysed by studying the main factors affecting biodiesel yield. A quadratic polynomial model has been developed using Response Surface Methodology (RSM). Box-Behnken Design (BBD) has been used to evaluate the influence of four independent variables i.e. methanol to oil (M:O) molar ratio, temperature, pressure and time on biodiesel yield. The optimum biodiesel yield is 91% at M:O molar ratio, temperature, pressure and reaction time of 37:1, 253.5 °C, 198.5 bar and 14.8 min, respectively. Overall reaction kinetics has been studied at optimum conditions concluding a pseudo first order reaction with reaction rate constant of 0.0006s−1. Moreover, thermodynamics of the reaction has been analysed in the temperature range between 240 and 280 °C concluding frequency factor and activation energy of 4.05s−1 and 50.5 kJ/mol, respectively. A kinetic reactor has been simulated on HYSYS using the obtained kinetic data resulting in 91.7% conversion of triglycerides (TG) with 0.2% relative error from the experimental results.
AB - Biodiesel production using supercritical methanol in the absence of catalyst has been analysed by studying the main factors affecting biodiesel yield. A quadratic polynomial model has been developed using Response Surface Methodology (RSM). Box-Behnken Design (BBD) has been used to evaluate the influence of four independent variables i.e. methanol to oil (M:O) molar ratio, temperature, pressure and time on biodiesel yield. The optimum biodiesel yield is 91% at M:O molar ratio, temperature, pressure and reaction time of 37:1, 253.5 °C, 198.5 bar and 14.8 min, respectively. Overall reaction kinetics has been studied at optimum conditions concluding a pseudo first order reaction with reaction rate constant of 0.0006s−1. Moreover, thermodynamics of the reaction has been analysed in the temperature range between 240 and 280 °C concluding frequency factor and activation energy of 4.05s−1 and 50.5 kJ/mol, respectively. A kinetic reactor has been simulated on HYSYS using the obtained kinetic data resulting in 91.7% conversion of triglycerides (TG) with 0.2% relative error from the experimental results.
UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-85021727552&partnerID=MN8TOARS
U2 - 10.1016/j.renene.2017.06.076
DO - 10.1016/j.renene.2017.06.076
M3 - Article
SN - 0960-1481
VL - 124
SP - 144
EP - 154
JO - Renewable Energy
JF - Renewable Energy
ER -