Method for removing polychlorinated dibenzodioxins and polychlor

Details Method for removing polychlorinated dibenzodioxins and polychlor Method for removing polychlorinated dibenzodioxins and polychlor

1990-10-12

1991-12-24

Wyse, Thomas

Liquid purification or separation

Processes

Chemical treatment

210909, 210928, C02F 1108

Patent

active

050750178

ABSTRACT:
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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