Fundamental Chemistry and Thermodynamics of Hydrothermal Oxidation Processes.

Simonson, J. M. ; Mesmer, R. E. ; Blencoe, J. G. ; Dai, S. ; Cummings, P. T.

Technical Information Center Oak Ridge Tennessee

关键词: Thermodynamics;    Hydrothermal alteration;    Progress report;    Oxidation;    Radioactive wastes;   

RP-ID  :  DE2004828164

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Hydrothermal oxidation (HTO) is a promising technology for the treatment of aqueous-fluid hazardous and mixed waste streams. Waste streams identified as likely candidates for treatment by this technology are primarily aqueous fluids containing hazardous organic compounds, and often containing inorganic compounds including radioisotopes (mixed wastes). These wastes are difficult and expensive to treat by conventional technologies (e.g. incineration) due to their high water content; in addition, incineration can lead to concerns related to stack releases. An especially attractive potential advantage of HTO over conventional treatment methods is the total containment of all reaction products within the overall system. The potential application of hydrothermal oxidation (HTO) technology for the treatment of DOE hazardous or mixed wastes has been uncertain due to concerns about safe and efficient operation of the technology. In principle, aqueous DOE wastes, including hazardous and mixed waste, can be treated with this technology. Oxidation reactions are carried out in the aqueous phase at high temperatures ((approx)600 C), effectively converting organic waste constituents to nonhazardous materials (e.g., CO2).