Removal of Technetium, Carbon Tetrachloride, and Metals from DOE Properties.

Mallouk, Thomas E. ; Ponder, Sherman M. ; Darab, John

Penn State University, University Park, PA

关键词: Removal;    Carbon Tetrachloride;    54 Environmental Sciences;    37 Inorganic, Organic, Physical And Analytical Chemistry;    Wastes;   

DOI  :  10.2172/828485
RP-ID  :  EMSP-60017-2000
RP-ID  :  FG07-97ER14822
RP-ID  :  828485

美国|英语

来源: UNT Digital Library

【 摘 要 】

The objective of this research is to prepare, characterize, and evaluate new materials for the removal of technetium (Tc) compounds, halogenated organics, and other troublesome metals from DOE waste streams and contaminated areas. This work follows the discovery that a nanoscale form of zero-valent iron, dispersed on high surface area supports, reduces metal ions (Cr, Hg, Pb, Cd) and Re (as a surrogate for Tc) to insoluble forms faster and with higher efficiency than does unsupported iron. Liquid-liquid extraction methods are also being developed for quantitative removal of Cs from tetraphenylborate salt mixtures, which are generated in waste processing at Savannah River, and conversion to vitrifiable inorganic Cs salts.