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Title	A Thermal Stability Based Ranking of Hazardous Organic Compound Incinerability
Creator	Taylor, Philip H.; Dellinger, Barry
Publisher	Digitized by J. Willard Marriott Library, University of Utah
Date	1987
Spatial Coverage	presented at Palm Springs, California
Abstract	The Resource Conservation and Recovery Act (RCRA) of 1976, reauthorized in 1985, required the US-EPA to establish regulatory standards for facilities that treat, store, or dispose of hazardous wastes. Three major performance requirements have be en established that place limits on the emissions of particulate matter, hydrochloric acid, and toxic organic compounds. The current approach on limiting the emissions of toxic organics is based on the demonstration that a given facility can achieve a combined destruction and removal efficiency (DRE) of 99.99% for principal organic hazardous constituents (POHCs) of the waste stream that are considered difficult to incinerate. The demonstration of 99.99% DRE for these compounds is effectively acting as a surrogate for the minimum DRE of other compounds in the waste fuel that are more easily incinerated. Thus, under the current regulatory approach, an accurate ranking of hazardous waste incinerability is critical to adequately controlling emissions of toxic organics. Initial field studies have shown that removal efficiency of most POHCs has a minimal impact on stack emission, thus we may focus our efforts on determining POHC destruction efficiency (DE).
Type	Text
Format	application/pdf
Language	eng
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Scanning Technician	Cliodhna Davis
ARK	ark:/87278/s61r6t2h
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ID	4084
Reference URL	https://collections.lib.utah.edu/ark:/87278/s61r6t2h

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Title	Page 10
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OCR Text	Show I logarithm space are small and thus no t de picted 1n the thermal decom-position profiles. Results Figure 2 displays typical results obtained for one of the five component mixtures studied. By following the decomposition of the five original components, one can determine the fraction of the POHC destroyed at any given temperature as well as the yield of PICs. From a plot of fraction remaining versus temperature (see Figure 3) one can visually determine the relative stability of the various components of the mixture. This ranking may be placed on a quantita-tive basis by comparing the T99 values under the standard test conditions. For the mixture shown, the T99s vary from 670°C (carbon tetrachloride) to 950°C (benzene). The PIC/POHC ratio as a function of temperature can be deter-mined from the data presented in Figure 4. This is a plot of area counts and should thus be considered semi-quantitative. The PIC yield is defined as the total area counts at a given temperature minus the area counts due to residual POHCs at that temperature. The PIC to POHC ratio at a given temperature can be determined from the ratio of the area counts. Since the identities of the PICs were not determined it is not possible to make any statements concerning the ~ relative toxicities of the PICs versus the POHCs. Table 1 summarizes the thermal stability data obtained from these tests that have been used in the development of a preliminary ranking of POHC incinerability. The T99 for the 36 compounds in ·cluded in this list range from 600C to 990C, a spread of almost
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Reference URL	https://collections.lib.utah.edu/ark:/87278/s61r6t2h/4070