Dawson, Elizabeth A., Parkes, Gareth M. B., Bond, Gary and Mao, Runjie
A system to investigate the remediation of organic vapors using microwave-induced plasma with fluidized carbon granules.
Review of Scientific Instruments, 80
- Published Version
Official URL: http://dx.doi.org/10.1063/1.3089823
This article describes a system to investigate the parameters for the remediation of organic vapors using microwave-induced plasma on fluidized carbon granules. The system is based on a single mode microwave apparatus with a variable power (2.45 GHz) generator. Carbon granules are fluidized in a silica tube situated in the sample section of a waveguide incorporating two additional ports to allow plasma intensity monitoring using a light sensor and imaging with a digital camera. A fluoroptic probe is used for in situ measurement of the carbon granule temperature, while the effluent gas temperature is measured with a thermocouple situated in the silica tube outside the cavity. Data acquisition and control software allow experiments using a variety of microwave power regimes while simultaneously recording the light intensity of any plasma generated within the carbon bed, together with its temperature. Evaluation using two different granular activated carbons and ethyl acetate, introduced as a vapor into the fluidizing air stream at a concentration of 1 ppm, yielded results which indicated that significant destruction of ethyl acetate, as monitored using a mass spectrometer, was achieved only with the carbon granules showing high plasma activity under pulsed microwave conditions. The system is therefore suitable for comparison of the relative microwave activities of various activated carbon granules and their performance in microwave remediation and regeneration.
|Additional Information:||Copyright (2009) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.|
|Uncontrolled Keywords (separate with ;):||air pollution control; carbon; organic compounds; plasma applications; plasma diagnostics|
|Subjects:||Q Science > Q Science (General)|
|Schools:||School of Forensic & Investigative Sciences|
|Deposited On:||08 May 2012 16:04|
|Last Modified:||19 Nov 2014 15:04|
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