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APPARENT COPPER RATE CONSTANTS DETERMINED IN IN-PILE LOOP EXPERIMENT L-2-22

Technical Report ·
OSTI ID:4194311
;
The results of radiolytic gas pressure measurements in the pressurizer of an in-pile loop experiment were used to calculate the copper rate constants in several different test solutions. The radiolytic gas pressures employed were those observed during normal operation of the experiment (i.e., main-stream and pressurizer solution temperatures of 280 and 295 deg C, respectively, and a solution circulating pump frequency of 60 cps). Values for the copper concentration, obtained from solution analyses, were combined with the solution rate constants to determine the apparent molar rate constant for each solution at 280 deg C. The values for the apparent molar rate constants thus determined were found to be about 6,400 hr/sup -1/ x M/sup -1/ x 1 in a solution that was 0.038 M UO/sub 2/SO/sub 4/, 0.015 M H/sub 2/SO/sub 4/, and 0.0051 M CuSO/sub 4/ in D/sub 2/O, and to range from 20,400 to 24,200 hr/sup -1/ x M/sup -1/ x 1 in two solutions that were 0.038 M UO/sub 2/SO/sub 4/, 0.09 to 0.095 M H/sub 2/SO/sub 4 0.00091 to 0.0025 M CuSO/sub 4/, and 0.18 M Li/sub 2/SO/sub 4/ in D/sub 2/O. The difference in the apparent rate constants was not necessarily due to an increased copper activity in the additivecontaining solutions. It may be indicative of an enhanced deuterium solubility or a decreased G-value in these solutions. Neither of these values was known for these additive solutions, and values estimated from those applying to additive-free uranyl sulfate solutions were employed. (auth)
Research Organization:
Oak Ridge National Lab., Tenn.
NSA Number:
NSA-14-012523
OSTI ID:
4194311
Report Number(s):
CF-60-3-88
Country of Publication:
United States
Language:
English

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Related Subjects

CHEMISTRY
COPPER
COPPER SULFATES
DECOMPOSITION
DEUTERIUM
GASES
HEAVY WATER
IN PILE LOOPS
LITHIUM SULFATES
PRESSURE
PUMPS
QUALITATIVE ANALYSIS
QUANTITY RATIO
RADIATION CHEMISTRY
RADIOLYSIS
SOLUBILITY
SOLUTIONS
SULFURIC ACID
TEMPERATURE
URANIUM SULFATES
URANYL COMPOUNDS