Photothermal Detoxification of Air Toxics

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Title Photothermal Detoxification of Air Toxics
Creator Chen, Chien T.; Graham, John L.; Dellinger, Barry
Publisher Digitized by J. Willard Marriott Library, University of Utah
Date 1993
Spatial Coverage presented at Tulsa, Oklahoma
Abstract There has long been interest in utilizing photochemical methods for the detoxification of hazardous organic materials. Unfortunately, classical, low temperature (i.e., ambient or near ambient) photochemical processes are either too slow or fail to completely mineralize the targeted wastes to be practical for wide spread use. Researchers at the University of Dayton Research Institute have recenty developed a photothermal process that overcomes the problems previously encountered with photochemical detoxification techniques. Specifically, it has been demonstrated that elevated temperatures (i.e., > 200 °C) increases the intensity of light absorption by typical hazardous organic chemicals, and that the spectral region of absorption broadens, and shifts towards the visible portion of the electromagnetic spectrum. This results in a far greater potential for air toxics to absorb near ultraviolet radiation than w as previously thought. It has also been shown elevated temperatures significantly increase the rate of photothermal reactions, making this process a viable technique for the destruction of air toxics. In this paper the authors will discuss the theoretical foundation for the photothermal detoxification process, and present a summary of the work in progress to develop a Photothermal Detoxification Unit (PDU) which will include examples of high temperature absorption spectra, and the results from actual trials with a Laboratory Scale Photothermal Detoxification Unit (LS-PDU).
Type Text
Format application/pdf
Language eng
Rights This material may be protected by copyright. Permission required for use in any form. For further information please contact the American Flame Research Committee.
Conversion Specifications Original scanned with Canon EOS-1Ds Mark II, 16.7 megapixel digital camera and saved as 400 ppi uncompressed TIFF, 16 bit depth.
Scanning Technician Cliodhna Davis
Metadata Cataloger Kendra Yates
ARK ark:/87278/s6hd7z7p
Setname uu_afrc
Date Created 2012-05-07
Date Modified 2012-09-20
ID 9245
Reference URL