Ripin, Adnan and Abdul Mudalip, Siti Kholijah and Sukaimi, Zairina and Mohd. Yunus, Rosli and Abdul Manan, Zainuddin (2009) Effects of ultrasonic waves on vapor-liquid equilibrium of an azeotropic mixture. Separation Science and Technology, 44 (11). pp. 2707-2719. ISSN 0149-6395
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Official URL: http://dx.doi.org/10.1080/01496390903014474
Azeotropic and extractive distillation techniques used to separate azeotropic mixtures are among the most challenging separation processes in the chemical industry. In this work, an innovative distillation technique which employed ultrasonic waves was proposed to intensify the conventional multi-column azeotropic distillation method into a single-column alternative. The effects of ultrasonic intensity on the vapor-liquid equilibrium (VLE) of methyl-terf-butyl-ether (MTBE)-methanol was investigated at 50, 100, 200, and 250 W/A. cm2 and at a fixed frequency of 40 kHz. Studies were also done to examine the effects of ultrasonic frequency on the VLE data at 25 and 68 kHz frequencies. It was found that ultrasonic waves at 50 W/A.cm2 intensity and 25 kHz frequency gave the highest relative volatility (a) at 2.654 and completely eliminated the MTBE-methanol azeotrope, thereby allowing highly pure MTBE to be recovered in just a single distillation column. The results revealed that ultrasonic waves had the potential to favorably manipulate a, and hence, the VLE of an azeotropic mixture.
|Uncontrolled Keywords:||azeotropic mixture, Methyl-terf-butyl-ether (MTBE)-methanol system, relative volatility, ultrasonic waves, vapor-liquid equilibrium|
|Subjects:||T Technology > TP Chemical technology|
|Divisions:||Chemical and Natural Resources Engineering (Formerly known)|
|Deposited By:||Ms Zalinda Shuratman|
|Deposited On:||26 Aug 2011 04:48|
|Last Modified:||26 Aug 2011 04:48|
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