Multizonal thermochemical modelling of heavy metal transfer in incineration plants

Ginsberg, Tobias; Liebig, Dorothea; Modigell, Michael; Sundermann, B.

doi:10.1016/j.psep.2011.07.002

Cited by 7 publications

(1 citation statement)

References 14 publications

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“…Although the ratio of trace elements between the various ash fractions greatly depends on the type of boiler, the operating conditions, and the fuel mix, the distribution patterns among the bottom, cyclone, and fabric filter ash fractions are similar to those reported earlier , for these major contaminants. However the study by Narodoslawsky relates only to Cd distribution pattern (from willow biomass), and data provided by Ginsberg have been acquired by modeling. Our set of data is therefore quite unique, as compared to the existing literature.…”

Section: Resultssupporting

confidence: 77%

Fate of Trace Elements during the Combustion of Phytoremediation Wood

Chalot

Blaudez

Rogaume

et al. 2012

Environ. Sci. Technol.

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We investigated the fate of trace elements (TE) in poplar wood on the conversion of biomass to heat in a 0.2 MW combustion unit equipped with a fabric filter. The phytoremediation wood was harvested from a TE-contaminated agricultural site planted with a high-density poplar stand. The combustion technology used in the present experiment allows for an efficient separation of the various ash fractions. The combustion process concentrates Cu, Cr, and Ni in the bottom ash, heat exchanger ash, and cyclone ash fractions. Therefore, the impact of the fabric filter is negligible for these elements. Conversely, Cd, Pb, and Zn are significantly recovered in the emission fraction in the absence of the fabric filter above the emission limits. The use of a fabric filter will allow the concentration of these three TEs in the ashes collected below the filter, thus complying with all regulatory thresholds, i.e., those from the large combustion plant EU directive. Because the TE concentrations in the different fractions differed significantly, it is recommended that these fractions be treated separately, especially when recycling of ashes from phytoremediation wood through application in agriculture is envisaged.

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