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EMISSIONS OF CHROMIUM, COPPER, ARSENIC AND PCDDS/FS FROM OPEN BURNING OF CCA TREATED WOOD
Citation:
WASSON, S. J., W. P. LINAK, B. K. GULLETT, C. J. KING, A. TOUATI, F. E. Huggins, Y. Chen, N. Shah, AND G. P. Huffman. EMISSIONS OF CHROMIUM, COPPER, ARSENIC AND PCDDS/FS FROM OPEN BURNING OF CCA TREATED WOOD. 10.1021/es050891g, ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 39(22):8865-8876, (2005).
Impact/Purpose:
to publish information
Description:
Aged and weathered chromated copper arsenate (CCA) treated wood was burned in an open burn research facility to characterize the air emissions and residual bottom ash. In addition to continuous measurements of gases and temperature, samples were collected to characterize the emissions of particles, elements (including arsenic, chromium, and copper), and polychlorinated dibenzodixoins/dibenzofurans (PCDDs/Fs). This work reports preliminary air emission concentrations and estimated emission factors for total particulate matter, arsenic, chromium, copper, and PCDD/F totals and toxic equivalents (TEQs). The partitioning of arsenic, chromium, and copper between the emitted fly ash and bottom ash is examined and thermochemical predictions from the literature are used to explain the observed behavior. Results indicate that between 11 and 14% of the arsenic present in the burned CCA treated wood was emitted with the air emissions, with the remainder present in the ash. In contrast, less than 1% of both the chromium and copper present in the wood was emitted with the air emissions. PCDD/F levels were unremarkable, averaging 1.7 ng TEQ/kg of treated wood, a value typical for wood combustion.
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EMISSIONS OF CHROMIUM, COPPER, ARSENIC AND PCDDS/FS FROM OPEN BURNING OF CCA TREATED WOOD