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Determination of heavy metals and volatile aromatic compounds in used engine oils and sludges
Authors:Teresa Rauckyte  Douglas J. Hargreaves
Affiliation:a Faculty of Technology and Chemical Engineering, University of Technology and Agriculture, 85-326 Bydgoszcz, Seminaryjna 3, Poland
b Faculty of Built Environmental and Engineering, Queensland University of Technology, Brisbane 4001 Australia
Abstract:Assessment of contaminant releases during utilization of used oils is essential for the determination of environmental acceptability. These paper reports the results of the study examining a toxic metal leachability from used engine oil and sludge samples employing leaching test (TCLP). The leaching test indicated that lead in oil samples exceeded 5-ppm concentration level what qualified them as a toxic waste. The samples of contaminated sludge were found to contain high concentration of total lead, barium and chromium, but the leaching test showed concentration below regulatory limit. The total content of benzene, ethylbenzene, toluene, and xylenes (BETX), and naphthalene in used oil and sludge samples was also determined and was found not to be a significant factor to contamination.
Keywords:Used engine oil and sludges   Leachability of heavy metals   Volatile aromatic hydrocarbons (BETX)
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