Neptunium Disposal to the Savannah River Site Tank Farm

Autor:	D. D. Walker, W. G. Dyer, H. H. Elder, T. L. Fellinger, E. K. Hansen, M. R. Poirier, S. H. Reboul
Rok vydání:	2005
Předmět:	chemistry Waste management Process Chemistry and Technology General Chemical Engineering Savannah River Site Neptunium Slurry chemistry.chemical_element Filtration and Separation Vitrification General Chemistry Solubility Nuclear chemistry
Zdroj:	Separation Science and Technology. 40:409-417
ISSN:	1520-5754 0149-6395
DOI:	10.1081/ss-200042478
Popis:	Researchers investigated the neutralization of an acidic neptunium solution from a Savannah River Site (SRS) processing canyon and the properties of the resulting slurry to determine the feasibility of disposal in the SRS tank farm. The acidic solution displayed no properties that precluded the proposed disposal route. Neutralization of the acidic neptunium forms a 4 wt% slurry of precipitated metal hydroxides. The insoluble solids consist largely of iron (92%) and neptunium hydroxides (2%). The concentration of soluble neptunium remaining after neutralization equaled 1.8 ± 0.6 mg/L, much less than previous solubility measurements predicted. Researchers used an apparatus similar to an Ostwald‐type viscometer to estimate the consistency of the neptunium slurry with the solids present. The yield stress and consistency of the 4 wt% slurry will allow transfer through the tank farm, although concentration of the insoluble solids above 4 wt% may cause significant problems due to increased consistency a...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0b013c0d9391b9246bccfea1ab8e982f https://doi.org/10.1081/ss-200042478 Zobrazit plný text záznamu