Record Display for the EPA National Library Catalog


Main Title Hazardous Waste Incineration: The In-situ Capture of Lead by Sorbents in a Laboratory Down-Flow Combustor.
Author Scotto, M. A. ; Peterson, T. W. ; Wendt, J. O. L. ;
CORP Author Arizona Univ., Tucson. Dept. of Chemical Engineering.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher c1992
Year Published 1992
Report Number EPA-68-02-4247; EPA/600/J-93/246;
Stock Number PB93-212538
Additional Subjects Hazardous materials ; Aerosols ; Waste disposal ; Incinerators ; Pollution control ; Meetings ; Lead(Metal) ; Absorbers(Materials) ; Particle size ; Kaolinite ; Combustion products ; Chlorine ; Injection ; Scavenging ; Oxidation reduction reactions ; Experimental data ; Test methods ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB93-212538 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 11p
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. In the absence of chlorine (Cl), 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. When 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. Cl kept the Pb in vapor form until it was sampled, at which point it formed a fume in the probe. At large Cl/Pb ratios (> 10), adding sorbent was not effective in scavenging the Pb vapor, although capture was again apparent as Cl/Pb ratios were reduced to 2. Data 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. (Copyright (c) 1992 M. A. Scotto.)