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FORMATION OF BROMINATED AND CHLORINATED DIOXINS AND ITS PREVENTION DURING A PILOT TEST OF MECHANOCHEMICAL TREATMENT OF PCB AND PBDE CONTAMINATED SOIL
Lu, M., T. Lv, Y. Li, Z. Peng, G. Cagnetta, S. Sheng, J. Huang, G. Yu, and R. Weber.
Environmental Science and Pollution Research 24(24):20072-20081(2017)

During a pilot study of mechanochemical (MC) destruction technology conducted for PCBs and polybrominated diphenyl ethers (PBDEs) in contaminated soil, actual applied conditions of the pilot-scale MC destruction process indicated that the temperature increase inside the ball mills had the potential to form high levels of toxic polybrominated and polychlorinated dibenzo-p-dioxins and dibenzofurans (PXDD/Fs) in the presence of dioxin precursors. The MC technology therefore was modified for treatment of PCB- and PBDE-contaminated soil to include a cooling system to prevent PXDD/F formation during PCB/PBDE destruction. This heat-related issue might be relevant to any contaminated soils containing dioxin precursors during soil treatment with MC and perhaps other non-combustion technologies. [Erratum - Correction to Figure 4: Environ Sci Pollut Res Apr 18.]



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