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Paper Information

Journal:   IRANIAN JOURNAL OF CHEMICAL ENGINEERING   SPRING 2016 , Volume 13 , Number 2; Page(s) 22 To 32.
 
Paper: 

ULTRASOUND-ASSISTED BIODIESEL PRODUCTION IN MICRO REACTORS

 
 
Author(s):  BASIRI M., RAHIMI M.*, BABAEI MOHAMMADI H.
 
* DEPARTMENT OF BIOTECHNOLOGY, KERMANSHAH BRANCH, ISLAMIC AZAD UNIVERSITY, KERMANSHAH, IRAN
 
Abstract: 

The ultrasound-assisted (UA) soybean oil methanolysis using KOH as a catalyst was studied at different reaction conditions in a micro reactor. Box–Behnken experimental design, with three variables, was performed and the effects of three reaction variables, i.e., reaction temperature, catalyst concentration and the methanol-to-oil molar ratio on fatty acid methyl ester (FAME) yield were evaluated by method of analysis of variance (ANOVA) and multiple regression. A quadratic polynomial model was obtained to predict the methyl ester yield. A yield of 97.1% for methyl ester was obtained at the deduced optimal conditions: reaction temperature of 47°C, KOH catalyst concentration of 1.29 (w/w%) and methanol-to-oil molar ratio of 6:1. Validation experiments confirmed the validity of the predicted model.
At the optimal operation condition for the ultrasonic process, a higher yield of methyl esters was obtained in comparison with that of the non-ultrasonic layout. The results show that UA trans esterification in micro reactor minimizes the reaction time and temperature, alcohol-to-oil molar ratio as well as energy consumption.

 
Keyword(s): ULTRASOUND, MICRO REACTOR, BIODIESEL, RESPONSE SURFACE, METHODOLOGY, TRANS ESTERIFICATION
 
References: 
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