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FATE OF TRACE METALS IN A ROTARY KILN INCINERATOR WITH A VENTURI/PACKED COLUMN SCRUBBER - VOLUME I: TECHNICAL RESULTS
Citation:
Fournier, Jr., D., W. Whitworth, Jr., J. Lee, AND L. Waterland. FATE OF TRACE METALS IN A ROTARY KILN INCINERATOR WITH A VENTURI/PACKED COLUMN SCRUBBER - VOLUME I: TECHNICAL RESULTS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/2-90/043a.
Description:
A five week series of pilot-scale incineration tests, using a synthetic waste feed, was performed at EPA's Incineration Research Facility to evaluate the fate of trace metals fed to a rotary kiln incinerator. ight tests studied the fate of five hazardous constituent and four nonhazardous constituent trace metals as a function of incinerator operating temperatures and feed chlorine content. hree tests evaluated the valance state of chromium in emissions and discharges as a function of feed valance state and feed chlorine content. arametric tests confirmed that cadmium, lead and bismuth are relatively volatile, based on normalized discharge distribution data. arium, copper, strontium, chromium and magnesium are relatively nonvolatile. pparent scrubber efficiencies generally correlated with observed volatilities; collection efficiency was higher for nonvolatile metals than for volatile metals. ncreased feed chlorine content significantly increased the volatility of cadmium, lead and bismuth. hromium test results indicated that with no feed chlorine, 95 percent of the measured chromium is discharged in the kiln ash. ith chlorine in the feed, this fraction dropped to 85 percent. iln ash contained negligible hexavalent chromium [Cr(+6)] for all tests. he fraction of scrubber exit flue gas chromium as Cr(+6) was nominally 15 percent with no feed chlorine, increasing to 50 percent with chlorine-containing feed.