화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.31, No.5, 875-880, May, 2014
DOI10.1007/s11814-014-0011-9  Export Citation
Vapor-liquid equilibrium of ethanol/ethyl acetate mixture in ultrasonic intensified environment
Taha Mahdi1, Arshad Ahmad2, 1, †, Adnan Ripin2, 1, and Mohamed Mahmoud Nasef2, 3
  • 1Faculty of Chemical Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
  • 2Institute of Hydrogen Economy, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
  • 3Malaysia Japan International Institute of Technology, Universiti Teknologi Malaysia, Kuala Lumpur 54100, Malaysia
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A vapor-liquid equilibrium (VLE) study was conducted on ethanol/ethylacetate mixture as a preliminary step towards developing an ultrasonic-assisted distillation process for separating azeotropic mixtures. The influence of ultrasonic intensity and frequency on the vapor-liquid equilibrium (VLE) of the mixture was examined using a combination of four ultrasonic intensities in range of 100-400W/cm2 and three frequencies ranging from 25-68 kHz. The sonication was found to have significant impacts on the VLE of the system as it alters both the relative volatility and azeotrope point, with preference to lower frequency operation. A maximum relative volatility of 2.32 was obtained at an intensity of 300 W/cm2 and a frequency of 25 kHz coupled with complete elimination of ethanol-ethyl acetate azeotrope. Results from this work were also congruent with some experimental and theoretical works presented in the literature. These findings set a good beginning towards the development of an ultrasonic assisted distillation that is currently in progress.
Keywords:Ultrasonic Wave;Azeotropic Mixtures;Ethyl Acetate/Ethanol;Vapor-liquid Equilibrium;Relative Volatility
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