Srat Chemistry and Acid Consumption During Simulated DWPF Melter Feed Preparation

Noble Metal Chemistry and Hydrogen Generation During Simulated DWPF Melter Feed Preparation

“…The raw ORP data are given in the SRAT chemistry report. 6 One test with delayed boiling indicated that the supernate became more oxidizing as hydrogen was generated.…”

“…ICP-AES analyses of the SRAT products showed that Ni averaged 0.93%, Mg averaged 1.69%, and Zr averaged 0.46%. 6 The sludge Zr value is the only result that appears to be inconsistent with both SRAT receipt and SRAT product sample results. Table 4 gives the density and solids data.…”

“…Pd was not entirely inactive catalytically in general, however, as the parallel report on SRAT chemistry found a doubling of N 2 O production in the presence of Pd compared to the baseline test with no noble metals. 6 Neither Rh nor Ru produced as large an enhancement in the set of comparable runs at 0.2 wt% noble metal.…”

“…Also, general SRAT and SME product composition data are not included in this report, but are instead covered in the report on SRAT chemistry and acid consumption, so these tables provide the only internal documentation of the approximate simulant composition. 6 The ABC blend simulant sample and eight SRAT receipt samples supporting the XAS work were analyzed in duplicate, and the results were averaged. The eight SRAT receipt sample averages were averaged to give the values in the SRAT receipt sample column.…”

“…6 Additional reports are planned as XAS data become available for samples with Rh (with Ru and/or Hg and/or other noble metals). Each of these reports addresses one or more of…”