Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Catalytic esterification and transesterification reaction of high acidic value waste oil by microwave heating

Catalytic esterification and transesterification reaction of high acidic value waste oil by... In this study, biodiesel production from waste cooking oil was investigated. Esterification and transesterification reactions were carried out under microwave irradiation using heterogeneous (Amberlyst‐15) and homogeneous (KOH) catalysts, respectively. The acidity of the oil was reduced from 6.92 to 1.09 mg KOH/g by an esterification reaction to avoid saponification during the transesterification reaction. Optimum esterification reaction conditions were investigated as 75°C, catalyst ratio of 25 wt % Amberlyst‐15, 30 min, a 1:12 WCO:methanol molar ratio and stepwise methanol addition. The energy consumption of the biodiesel production under microwave heating was calculated and compared with a conventional heating system. The transesterification reaction was performed at 65°C for 3 min, at a 1:7 oil:methanol molar ratio, and 1 wt % KOH. The methyl ester content of the biodiesel was increased from 25.06% to 97.23% when an esterification reaction was applied prior to transesterification. © 2014 American Institute of Chemical Engineers Environ Prog, 34: 575–581, 2015 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Environmental Progress & Sustainable Energy Wiley

Catalytic esterification and transesterification reaction of high acidic value waste oil by microwave heating

Loading next page...
 
/lp/wiley/catalytic-esterification-and-transesterification-reaction-of-high-yqtC161793

References (43)

Publisher
Wiley
Copyright
© 2015 American Institute of Chemical Engineers Environ Prog
ISSN
1944-7442
eISSN
1944-7450
DOI
10.1002/ep.11985
Publisher site
See Article on Publisher Site

Abstract

In this study, biodiesel production from waste cooking oil was investigated. Esterification and transesterification reactions were carried out under microwave irradiation using heterogeneous (Amberlyst‐15) and homogeneous (KOH) catalysts, respectively. The acidity of the oil was reduced from 6.92 to 1.09 mg KOH/g by an esterification reaction to avoid saponification during the transesterification reaction. Optimum esterification reaction conditions were investigated as 75°C, catalyst ratio of 25 wt % Amberlyst‐15, 30 min, a 1:12 WCO:methanol molar ratio and stepwise methanol addition. The energy consumption of the biodiesel production under microwave heating was calculated and compared with a conventional heating system. The transesterification reaction was performed at 65°C for 3 min, at a 1:7 oil:methanol molar ratio, and 1 wt % KOH. The methyl ester content of the biodiesel was increased from 25.06% to 97.23% when an esterification reaction was applied prior to transesterification. © 2014 American Institute of Chemical Engineers Environ Prog, 34: 575–581, 2015

Journal

Environmental Progress & Sustainable EnergyWiley

Published: Mar 4, 2015

There are no references for this article.