Plasma centrifugal furnace

A plasma centrifugal furnace uses thermal heat transferred from arc plasma to create a molten bath that detoxifies the feed material. Organic contaminants are vaporized at temperatures of 2000 to 2500°F (1093 to 1371°C) to form innocuous products. Solids melt and are vitrified in the molten bath at 2800 to 3000°F (1540 to 1650°C). Metals are retained in this phase, which is a nonleachable, glassy residue. This method is applicable to soils contaminated with organic compounds and metals. 

Plasma arc treatment. The spent fuel is placed directly into a plasma centrifugal furnace with depleted uranium and neutron absorbers, where it is melted and converted into a HLW glass waste form. 

The iron released may be measiu ed using a variety of methods based on two main techniques atomic absorption spectrometry (AAS) (flame or furnace) and ultraviolet (UV)-visible spectrophotometry. Flame AAS provides the reference method for determination of plasma iron. Protein precipitation with TCA is followed by centrifugation and measurement of iron in the supernatant by the absorption at 248.3 nm in an air-acetylene flame. While atomic absorption methods are routinely used for urine iron measurements, the need to remove protein and any hemoglobin contamination restricts the use of this technique in routine clinical chemistry for plasma iron. Electrothermal atomization AAS methods are typically used for determination of iron in tissues although inductively coupled plasma (ICP) is becoming more widely available. 

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