Citation:

Carroll, G., R. Thurnau, AND D. Fournier, Jr. MERCURY EMISSIONS FROM A HAZARDOUS WASTE INCINERATOR EQUIPPED WITH A STATE-OF-THE-ART WET SCRUBBER. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-95/497.

Description:

Over a six-week period, 11 tests were performed at the U.S. EPA Incineration Research Facility (IRF) in Jefferson, Arkansas to evaluate the fate of trace metals fed to a rotary kiln incinerator equipped with a Calvert Flux-Forcer/Condensation Scrubber pilot plant as the primary air pollution control system (APCS). est variables were kiln temperature, ranging from 538 degrees C to 927 degrees C; waste feed chlorine content, ranging from 0% to 3.4%; and scrubber pressure drop, ranging from 8.2 kPa to 16.9 kPa. mong the six hazardous constituent trace metals fed to the IRF's pilot-scale rotary kiln incineration system as part of a synthetic waste feed was mercury. his paper focusses on the test results solely with respect to mercury. s expected, mercury behaved as a very volatile metal throughout the tests; mercury was not detected in any kiln ash samples. crubber collection efficiency for mercury ranged from 67% to >99%, averaging 87%; this was somewhat lower than expected and may be attributable to low scrubber loadings. he ability to collect and analyze representative scrubber water samples appears to have been impacted by waste feed chlorine content; detection of mercury at higher concentrations during high waste-chlorine-content tests is thought to be largely the result of the formation of mercuric chloride, a more water-soluble species, during those tests. s a result, no firm conclusions may be drawn regarding the true impact of waste feed chlorine content on mercury partitioning to the scrubber water. s expected, no significant relationship was observed between kiln exit-gas temperature and mercury partitioning, nor was a significant relationship with scrubber pressure drop.

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