Glycolic-Formic Acid Flowsheet Final Report for Downselection Decision

Determination of the Impact of Glycolate on ARP and MCU Operations

“…10,000 ppm is the estimated bounding concentration expected in the DWPF recycle stream. 6 Tests were also performed using simulant that had not been spiked with glycolate for comparison. For the 5,000 ppm glycolate simulant, 2.2870 g (0.0233 mol) of sodium glycolate was dissolved in 15 mL of salt solution (SWS-1-2010, see Table 2-1 for composition).…”

Demonstration of the Glycolic-Formic Flowsheet in the SRNL Shielded Cells Using Actual Waste

“…SSC-13 processing was comparable to the respective simulant work. The comparable simulant run (GF6 -100% Koopman acid stoichiometry and 1.45 mol/L of acid added 8 to a SB6 simulant) produced a peak hydrogen of 0.013 lb/hr DWPF-Scale, higher than observed in the SC-13 SRAT cycle.…”

Scix Impact on DWPF CPC

“…Results from the DWPF alternate flowsheet testing using glycolic acid, however, show the potential to change some of these conclusions. 24 Zirconium dissolution levels were anywhere from 9-82% depending on acid stoichiometry. The potential exists for glycolic acid to attack the Zr in the CST binder and release pure, small silico-titanate crystals from the ion exchange solid matrix.…”