Sorbents for removal of Lead compounds from hot flue gases

Since strict regulations have been placed prohibiting the placement of hazardous wastes in landfills, incineration is emerging as the principal and most attractive alternative for disposal of hazardous wastes. Incineration of waste offers various advantages including conversion of toxic organic components of hazardous wastes to harmless or less harmful forms, reduction in volume, and means of energy recovery. Unfortunately, since metals are not destroyed during the incineration process, toxic metal particles or vapors are generated as byproducts when wastes containing these metals are incinerated. A significant fraction of volatile compounds of toxic metals like lead, mercury, cadmium, arsenic, and selenium, are emitted as vapor or fine particles. Nonvolatile toxic metal compounds are released with the ash and also require safe disposal.