Process Development for Permanganate Addition During Oxidative Leaching of Hanford Tanks Sludges

Rapko, Brian M. ; Lumetta, Gregg J. ; Deschane, Jaquetta R. ; Peterson, Reid A. ; Blanchard, David L.

Pacific Northwest National Laboratory (U.S.)

关键词: Leaching;    Sludges;    Radioactive Waste Processing;    Sodium Compounds;    Oxidation;   

DOI  :  10.2172/919716
RP-ID  :  PNNL-16794
RP-ID  :  AC05-76RL01830
RP-ID  :  919716

美国|英语

来源: UNT Digital Library

【 摘 要 】

Previous Bechtel National, Incorporated (BNI)-sponsored studies have targeted optimizing sodium permanganate for the selective oxidation of chromium from washed Hanford tank sludges (Rapko et al. 2004; Rapko et al. 2005). The recommendation from previous work was that contact with sodium permanganate in a minimally caustic solution, i.e., 0.1 to 0.25 M [OH-] initially, provided maximum Cr dissolution while minimizing concomitant Pu dissolution. At the request of BNI, further work on oxidative alkaline leaching was performed.