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Arabian Journal for Science and Engineering

, Volume 43, Issue 11, pp 6133–6141 | Cite as

Biodiesel Production in Tubular Microreactor: Optimization by Response Surface Methodology

  • Preena Shrimal
  • Himanshu Sanklecha
  • Pritam Patil
  • Arun Mujumdar
  • Jitendra Naik
Research Article - Chemical Engineering
  • 44 Downloads

Abstract

Transesterification of crude cottonseed oil with methanol in the presence of catalyst (NaOH) in tubular microreactor has been investigated experimentally. The transesterification reaction was performed in a silicon tube of 0.8 mm inner diameter, mounted in serpentine manner configuration on an acrylic sheet. Influence of process variables such as reaction temperature \((35{-}45\,{^{\circ }}\hbox {C})\), NaOH concentration (0.5–1.5 wt%) and oil/methanol molar ratio (1:7–1:9) on fatty acid methyl ester (FAME) was studied. In order to further improve biodiesel yield, an experimental design was employed using the Box–Behnken method and analysis of variance. The %FAME was calculated by gas chromatography using methyl arachidate as an internal standard. Fourier transform infrared spectroscopy was used to investigate the functional groups present in biodiesel. Thermal stability of biodiesel was evaluated using a thermogravimetric analyser. The optimal condition found was oil/methanol molar ratio (1:8), catalyst concentration (1 wt%) and reaction temperature \((45\,{^{\circ }}\hbox {C})\) while %FAME yield of about 94.1% at a residence time of 90 s.

Keywords

Tubular microreactor Crude cottonseed oil FAME Response surface methodology 

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Notes

Acknowledgements

Authors are grateful to Technical Education Quality Improvement Program (TEQIP-II), World Bank and MHRD, New Delhi, for providing financial assistance to carry out this research work.

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Copyright information

© King Fahd University of Petroleum & Minerals 2018

Authors and Affiliations

  1. 1.Department of Chemical Engineering, University Institute of Chemical TechnologyNorth Maharashtra UniversityJalgaonIndia
  2. 2.SVMITCollege of EngineeringBharuchIndia
  3. 3.Department of Chemical and Biochemical EngineeringWestern UniversityLondonCanada

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