화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.35, 14-19, March, 2016
DOI10.1016/j.jiec.2016.01.004  Export Citation
Determining optimum pulse mode for ultrasound enhanced biodiesel production
Edith Martinez-Guerra, and Veera Gnaneswar Gude†
  • Department of Civil and Environmental Engineering, Mississippi State University, 501 Hardy Rd., PO Box 9546, Mississippi State, MS 39762, United States, USA
E-mail:
This study evaluated the most suitable pulse mode (pulse ON-OFF pattern) for transesterification of waste cooking oil (WCO) using sodium hydroxide. Pulse sonication effect was investigated using ethanol, methanol, and ethanol.methanol mixtures to convert waste cooking oil into biodiesel. The importance of duty cycle (pulse-mode operation) and the role of reaction temperature during the conversion process were discussed. A maximum biodiesel yield of 99% was obtained for a pulse ON-OFF combination of 7 s-2 s at 150 W power output, and the optimum reaction conditions of 9:1 alcohol-to-oil molar ratio (50%- ethanol, 50%-methanol), 1 wt.% of NaOH, and 1.5 min reaction time.
Keywords:Pulse-sonication;Duty cycle;Energy consumption;Alcohol effect;Reaction temperature
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