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What are the problems with incineration of CCA treated wood?

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What are the problems with incineration of CCA treated wood?

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Disposal of CCA-treated wood via incineration may be problematic due to • Volatilization and entrainment of CCA metals in combustion environments • Leaching of CCA metals from incineration ash on disposal in landfills This could pose serious health and environmental problems. Among the metals contained within CCA, arsenic is considered a volatile metal. During high-temperature combustion of fuel containing arsenic, many arsenic compounds vaporize and form very fine particulate matter when combustion air cools. While particulate control devices such as baghouses or electrostatic precipitators (ESPs) can be good options for controlling particulate emission (depending on the characteristics of the arsenic compounds formed), they are not good at controlling arsenic present in submicron range and in vapor phase. Also, the leaching from arsenic containing fly ash and bottom ash can pose a problem for the ash disposal. Townsend et al,2004 have reported the leaching of arsenic and in some case

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