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HAZARDOUS WASTE INCINERATION: THE IN-SITU CAPTURE OF LEAD BY SORBENTS IN A LABORATORY DOWNFLOW COMBUSTOR
SCOTTO, MARK V., T. Peterson, AND J. Wendt. HAZARDOUS WASTE INCINERATION: THE IN-SITU CAPTURE OF LEAD BY SORBENTS IN A LABORATORY DOWNFLOW COMBUSTOR. In Proceedings, 24th International Symposium on Combustion, Sydney, AUSTRALIA, July 05 - 10, 1992. Combustion Institute, Pittsburgh, PA, 1109-1117, (1992).
The paper discusses experiments on a 17-kW downflow combustor to determine how sorbent injection into the postflame influenced the particle size distribution of a lead (Pb) aerosol formed from a surrogate Pb-containing waste. n the absence of chlorine (CI), the Pb aerosol size distribution evolved within the combustor to lie predominantly between 0. 02 and 0. 2 micrometer by the time it was sampled at the combustor exit. hen a commercial kaolinite sorbent was added, the Pb sampled in that particle size range was reduced by 99%, and it is clear that the heavy metal was reactively scavenged in the combustor by the larger sorbent particles. l kept the Pb in vapor form until it was sampled, at which point it formed a fume in the probe. t large CI/PB ratios (> 10), adding sorbent was not effective in scavenging the Pb vapor, although capture was again apparent as CI/PB ratios were reduced to 2. ata from experimental runs with a large excess of Cl present, but not those where the Cl/Pb ratio was equal to 2, are in sharp contrast to literature data from bench scale reactor studies.
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Record Details:Record Type: DOCUMENT (PAPER IN NON-EPA PROCEEDINGS)
Organization:U.S. ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL RISK MANAGEMENT RESEARCH LABORATORY
AIR POLLUTION PREVENTION AND CONTROL DIVISION
AIR POLLUTION TECHNOLOGY BRANCH