Method for removing polychlorinated dibenzodioxins and...

Details Method for removing polychlorinated dibenzodioxins and... Method for removing polychlorinated dibenzodioxins and...

D - Textiles, Paper

21

C

D21C 11/00 (2006.01) C02F 11/00 (2006.01) C02F 11/08 (2006.01) A62D 3/00 (2006.01)

Patent

CA 2046118

ABSTRACT OF THE DISCLOSURE A process for removing PCDD's and PCDF's from paper mill sludge is provided. The process comprises combining the sludge with an oxidant and then oxidizing the sludge under supercritical or near supercritical conditions to destroy the PCDD's and PCDF's. Using this process, destruction efficiencies of greater than 98% have been achieved for 2,3,7,8-TCDD, which is reportedly the most toxic of the dioxins.

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