Malaysian Journal of Analytical Sciences Vol 18 No 2 (2014): 321 – 328

 

 

 

METHYL ESTER (BIODESEL) PRODUCTION FROM WASTE COOKING VEGETABLE OIL BY MICROWAVE IRRADIATION

 

(Penghasilan Metil Ester (Biodesel) Daripada Sisa Minyak Sayuran oleh Penyinaran Gelombang Mikro)

 

M.S.Khatun^*, M.A. Khatun, M.Z.H. Khan, M. Debnath

 

Department of Chemical Engineering,

Jessore University of Science & Technology, Jessore- 7408, Bangladesh.

 

*Corresponding author: sheauly.jstu@gmail.com

 

 

Abstract

In this study we tried to develop, test and optimize a batch microwave system using waste cooking vegetable oil (WCVO) that was used as biodiesel feedstock. Two catalysts, sodium hydroxide (NaOH) and potassium hydroxide (KOH) were tested in this study. Transesterification reactions between oil and methanol were carried out in presence of microwaves. It was observed that by using of microwaves, the reaction times were drastically reduced. As high as 99.5% conversions could be achieved for 0.5% KOH concentration. Moreover, quality analysis of biodiesels according to international standards was performed and the samples were found to meet the necessary specifications.

 

Keywords: methyl ester biodiesel; waste cooking vegetable oil; microwave irradiation; biofuel

 

Abstrak

Dalam kajian ini penulis cuba membangunkan, menguji dan mengoptimumkan suatu sistem penghasilan bahan mental biodesel secara gelombang mikro menggunakan sisa minyak sayuran memasak sisa (WCVO). Dua pemangkin, natrium hidroksida (NaOH) dan kalium hidroksida (KOH) telah diuji dalam kajian ini. Tindakbalas transesterifikasi antara minyak dan metanol telah dijalankan mengunakan gelombang mikro. Kajian mendapati bahawa dengan menggunakan gelombang mikro, masa tindakbalas berkurangan secara drastik. Penukaran boleh dicapai sehingga 95% bagi kepekatan KOH 0.5%. Selain itu, analisis kualiti biodiesel mengikut piawaian antarabangsa telah dilakukan dan sampel didapati memenuhi spesifikasi yang diperlukan.

 

Kata kunci: biodiesel metil ester; sisa minyak masak sayuran; penyinaran gelombang mikro; biofuel

 

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