Investigation of Plasma Treatment for Hazardous Wastes such as Fly Ash and Asbestos

Abstract

Hazardous wastes such as fly ash and asbestos can be melted by the plasma treatment, which become a block of glassified slag and those volume decreases sharply by 49_??_65% from the original volume. Glassified slag of the fly ash including heavy metals such as Zn, Cu, Fe and so on has an extremely good water-proof capability. The electric conductivity of the solution of 18.8g slag in 700ml distilled water is nearly as same as that of the pure distilled water, being only about 0.1% of the electric conductivity of the solution of the fly ash in the distilled water. The molten asbesto surface becomes a hard skin without needle-like fibers, which has no influence on the human health. As a result, the plasma treatment is very useful for the environmental preservation