Chelant screening and refinement tests - Phase I, Task 2. Topical progress report, December 1993--June 1994 Page: 88 of 236

DOE/UO2 SOLUBILITY AND CORROSION TEST

Page 22

@ TEMPERATURE

R.T. To 150*F To R.T.

Date: 06/14/94

SOLUTION & pH HRS CO3 pH U-ppm Fe-ppm Ni-ppm Cu-ppm CORROSION - mils
1 N.A. 9.0 2544 <3.0 <3.0 <3.0 C-1018 0.001
2.0% (NH)2CO3 2 N.A. 8.87 3670 <3.0 <3.0 <3.0 N-200 0.002
0.50% H202 4 N.A. 8.83 3780 <3.0 <3.0 <3.0 M-400 0.002
pH-9.01 6 N.A. 9.0 3774 <3.0 <3.0 <3.0 UO2 SOLUBILITY
Test 67 8 N.A. 9.02 3944 <3.0 <3.0 <3.0 # 10.000
pH ADJUSTED WITH NH40H N.A. = NOT AVAIlABLE (PROCEDURE)
# ADJUSTED FOR LOSS (MILLIPORES 'H202% 0.748, 1hr=0.593, 2hr@R.T.=0.556.1hrCooled=0.372, 2hrs cooled=0.13
M-52269 @ TEMPERATURE R.T. to 150*F to R.T Date: 06/15/94
'SOLUTION & pH HRS EDTA g/l pH U - ppm Fe - ppm Ni - ppm Cu - ppm CORROSION - MILES
5% EDTA 1 47.8 8.85 2140 <3.0 <3.0 <3.0 C1018 - 0.918
2.0% (NH4)2CO3. . 2 45.7 8.78 3504 <3.0 <3.0 <3.0 N200 - 0.069
0.50% H202 3 35.1 8.53 3534 3.08 13.9 6.70 M400 - 0.122
pH 9.0 4 30.8 8.53 3816 94.0 26.6 7.90 UO2 SOLUBILITY
7 24.4 8.55 3688 177 30.5 9.80 10.000
Test 68 8 22.3 8.62 3723 179 31.2 9.3 -
pH ADJUST W/NH40H H202%= 0.475, 1Hrs=0.356, 2Hrs=0.273, 1hr hot= 0.018, 3hrs hot=0.0077
# ADJUSTED FOR LOSS (MILUPORES)1hr cooled=0.0067 2hrs cooled=0.0062,
M-52270 @ TEMPERATURE R.T.- 200*F - R.T. Date: 06/16/94
SOLUTION AND - pH HRS NH4CO3 pH U -ppm Fe-ppm Ni-ppm Cu-ppm CORROSION - mils
1 N.A. 9.15 2256 <3.0 <3.0 <3.0 C1018 - 0.001
2.0% (NH4)2CO3 2 N.A. 9.14 2698 <3.0 <3.0 <3.0 N200 - 0.001
0.5% H202 3 N.A. 9.36 3476 <3.0 <3.0 <3.0 M400 - 0.001
pH 9.0 4 N.A. 9.47 3498 <3.0 <3.0 <3.0 UO2 SOLUBILITY
Test 69 7 N.A. 9.53 3547 <3.0 <3.0 <3.0 #9.7382
NOTE: ODD HRS 8 N.A. 9.43 3548 <3.0 <3.0 <3.0 YELLOW PRECIP REMAI
# ADJUSTED FOR LOSS (MILUPORES) N.A. = NOT AVAILABLE (PROCEDURE)
H202 % =0.63, 1hr=0.599, 2hrs 0.577, 1hr hot=<0.006, 2hr hot=<0.006,1hr cooled= 0.14, 2hrcooled=0.066
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Chelant screening and refinement tests - Phase I, Task 2. Topical progress report, December 1993--June 1994, report, July 1, 1995; United States. (https://digital.library.unt.edu/ark:/67531/metadc680875/m1/88/ocr/: accessed May 23, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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