Volume reductions of 20 to 50 percent are typical after treatment. Some inorganic contaminants, especially volatile metals, may escape the vitrification process and require subsequent treatment by the off-gas treatment system. Residues from the final application may require special disposal. Volume of scrubber water generated is highly dependent upon soil moisture content, ambient air humidity, and soil particulate levels in the off-gas. A suitable source of electric power is required to utilize this technology.
Equipment is transportable and can be brought to the site using conventional shipping methods.
A crane is required for off-gas hood placement and movement. The soil oxide composition must provide sufficient electrical conductivity in the molten state and adequate quantities of glass formers to produce a vitrified product. Oxides can be added to soil to correct for deficiencies. Groundwater should be diverted away from treatment areas to improve economic viability. Costs are highly site specific.