CHARACTERIZATION OF ACTINIDES IN SIMULATED ALKALINE TANK WASTE SLUDGES AND LEACHATES | Zendy

Kenneth L. Nash | Zendy; Linfeng Rao | Zendy

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CHARACTERIZATION OF ACTINIDES IN SIMULATED ALKALINE TANK WASTE SLUDGES AND LEACHATES

Author(s) -

Kenneth L. Nash,

Linfeng Rao

Publication year - 2005

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/893225

Subject(s) - leaching (pedology) , leachate , chemistry , dissolution , actinide , waste management , alkali metal , toxicity characteristic leaching procedure , environmental chemistry , nuclear chemistry , environmental science , heavy metals , soil water , engineering , organic chemistry , soil science

Removal of waste-limiting components of sludge (Al, Cr, S, P) in underground tanks at Hanford by treatment with concentrated alkali has proven less efficacious for Al and Cr removal than had been hoped. More aggressive treatments of sludges, for example, contact with oxidants targeting Cr(III), have been tested in a limited number of samples and found to improve leaching efficiency for Cr. Oxidative alkaline leaching can be expected to have at best a secondary influence on the mobilization of Al. Our earlier explorations of Al leaching from sludge simulants indicated acidic and complexometric leaching can improve Al dissolution

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