Chemical association of lead in auto shredder residue

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Journal titleEnvironmental Technology
Pages585592; # of pages: 7
SubjectSolid-waste; Heavy metals; Lead; Leaching; Absorption
AbstractThe chemical distribution of lead in two samples of a unique solid waste stream, Auto Shredder Residue (ASR), is investigated employing a variety of chemical and physical analytical procedures. The results of the analysis suggest that the major source of lead contamination in this particular solid waste stream can be attributed to accumulated road dirt which contains particulate lead and amorphous lead oxide associated with the combustion of leaded gasoline. Although some lead oxides are detected as small paint chips associated with electro-coated paint primers, used to provide corrosion resistance in automobiles, the actual quantities detected are small. The results of a sequential chemical extraction procedure indicate that the environmental mobility of the lead present in ASR is very sensitive to pH conditions. These results have important implications on the classification of the material as a “Hazardous”; or “Non Hazardous”; solid waste.
Publication date
AffiliationNRC Institute for Chemical Process and Environmental Technology; National Research Council Canada
Peer reviewedYes
NRC number51991
NPARC number14502027
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Record identifier4a5e68f8-fd4f-4ff0-ba03-f175469f8f68
Record created2010-02-23
Record modified2016-05-09
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