Processing of High Level Waste: Spectroscopic Characterization of Redox Reactions in Supercritical Water - Final Report

Arrington, C. A., Jr.

Furman University

关键词: Sludges;    Hydroxides;    Redox Reactions;    Tank Waste Sludge;    Radioactive Waste Processing;   

DOI  :  10.2172/788324
RP-ID  :  DOE/ER/14709
RP-ID  :  FG07-96ER14709
RP-ID  :  788324

美国|英语

来源: UNT Digital Library

【 摘 要 】

Current efforts are focused on the oxidative dissolution of chromium compounds found in Hanford tank waste sludge. Samples of chromium oxides and hydroxides with varying degrees of hydration are being characterized using Raman, FTIR, and XPS spectroscopic techniques. Kinetics of oxidation reactions at subcritical and supercritical temperatures are being followed by Raman spectroscopy using a high temperature stainless steel cell with diamond windows. In these reactions both hydrogen peroxide and nitrate anions are used as the oxidizing species with Cr(III) compounds and organic compounds as reducing agents.