Supercritical fluid process for removal of polychlorodibenzodiox and dibenzofuran form fly ash

摘要

A process is proposed for the decontamination of fly ash from an urban solid-waste incineration facility(USWI), where the target contaminants are polychlorodibenzodioxins(PCDDs)and dibenzofurans(PCDFs), a class of highly toxic tricyclo- polychlorinated organics. In general, the ash waste requires inertization and disposal into a controlled landfill. Here, we propose an inertization process based on the reduction of the PCDDs and PCDFs content before dumping.