Transpiration studies on the volatilities of PuO3(g) and PuO2(OH)2(g) from PuO2(s) in the presence of steam and oxygen and application to plutonium volatility in mixed-waste thermal oxidation processors

Autor:	Martyn G. Adamson, B B Ebbinghaus, Oscar H. Krikorian, Alfred S. Fontes
Rok vydání:	1997
Předmět:	Nuclear and High Energy Physics Volatilisation Chemistry Analytical chemistry chemistry.chemical_element Combustion Chemical reaction Oxygen Plutonium Nuclear Energy and Engineering Chlorine General Materials Science Energy source Volatility (chemistry) Nuclear chemistry
Zdroj:	Journal of Nuclear Materials. 247:161-171
ISSN:	0022-3115
DOI:	10.1016/s0022-3115(97)00043-3
Popis:	Transpiration experiments have been carried out to study the volatility of PuO 2 (s) in the presence of oxygen and steam. Vapor pressures have been measured for PuO 3 (g) and PuO 2 (OH) 2 (g) and thermodynamic data established for them. Thus, Δ f H 298 0 is determined to be −(562.8 ± 5.0) kJ/mol for PuO 3 (g) and −(1,018.2 ± 3.3) kJ/mol for PuO 2 (OH) 2 (g). In applying the Pu volatility data to a pilot scale mixed waste (containing both radioactive and hazardous constituents) incinerator with primary and secondary combustion chambers, it is found that Pu volatilization makes a negligible contribution to air emissions if the temperature in the secondary combustor is maintained at less than 1600 K. Chlorine- and fluorine-induced volatilities of plutonium are not considered in this analysis.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f04b4f8d93901fd273d909393bdfc0ea https://doi.org/10.1016/s0022-3115(97)00043-3 Zobrazit plný text záznamu Full Text from ScienceDirect