RSM and Crow Search Algorithm-Based Optimization of Ultrasonicated Transesterification Process Parameters on Synthesis of Polyol Ester-Based Biolubricant

  • S. ArumugamEmail author
  • P. Chengareddy
  • A. Tamilarasan
  • V. Santhanam
Research Article - Chemical Engineering


This study investigated the optimization of ultrasound-aided transesterification process variables for the synthesis of polyol ester-based biolubricant. A response surface methodology based on Box–Behnken design coupled with crow search algorithm methodology was adopted to optimize the ultrasonicated transesterification process variables such as an ultrasonic pulse, amplitude, catalyst concentration, and reaction temperature in order to maximize the yield percentage of polyol ester. The formation of pentaerythritol ester was confirmed by Fourier transform infrared spectroscopy and gas chromatography. The significant properties of the new formulation were compared with synthetic grade compressor oil. Improved yield of 81.4% of pentaerythritol ester was accomplished with an ultrasonic pulse of 15 s, an ultrasonic amplitude of 60%, a catalyst concentration of 1.5 wt%, and the reaction temperature of 100 °C. This optimization study suggested that ultrasonicated successive transesterification process is an effective method in substituting conventional successive transesterification process for the synthesis of pentaerythritol ester-based biolubricant.


Box–Behnken method Crow search algorithm Pentaerythritol ester Ultrasonication Response surface methodology Transesterification 


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Copyright information

© King Fahd University of Petroleum & Minerals 2019

Authors and Affiliations

  • S. Arumugam
    • 1
    Email author
  • P. Chengareddy
    • 1
  • A. Tamilarasan
    • 1
  • V. Santhanam
    • 2
  1. 1.Department of Mechanical EngineeringSri Chandrasekharendra Saraswathi Viswa MahavidyalayaEnathur, KanchipuramIndia
  2. 2.Department of ChemistrySri Chandrasekharendra Saraswathi Viswa MahavidyalayaEnathur, KanchipuramIndia

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