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Plasma Vitrification Technology for the Treatment of Nuclear Waste
Author:	Deegan, David, Murray, Alan, Wise, Mike
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This paper outlines the Plasma Vitrification Technology as used by Tetronics and the results of simulant trials, together with the potential applications in the UK nuclear industry. Vitrification of high level radioactive waste has been successfully implemented and the benefit, in terms of waste volume reduction, has attractions for other waste streams. However, these pose additional challenges because of the range of materials that may be present in intermediate level waste streams. One of the techniques which has the potential to deal with a wide-range of materials is dc plasma arc vitrification. Mixed waste streams - including organic and inorganic materials - are fed into a sealed plasma furnace where it is heated in a controlled environment by electrodes. The temperature converts the organic matter into gases such as steam and carbon dioxide. The remaining, principally inorganic, materials remain in the furnace which is discharged after processing. The composition is carefully controlled to achieve specific waste characteristics. The waste material is fed into the furnace independently of the oxidant and both waste and oxidant can be controlled independently of the power input. This gives high process control and the ability to tolerate wide variations in waste compositions.gas, but remain in the primary solid residue.

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Price:	£21.28 (£21.28 inc.)
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