Evaluation of isotope migration: land burial. Water chemistry at commercially operated low-level radioactive waste disposal sites. Quarterly progress report, April-June 1981

Technical Report · Sun Nov 01 04:00:00 EST 1981

DOI:https://doi.org/10.2172/5292556· OSTI ID:5292556

Czyscinski, K S; Pietrzak, R F; Weiss, A J

Results are reported for radionuclide sorption experiments performed under anaerobic conditions and as a function of solution/solid ratio for trench shale and waters collected at the Maxey Flats disposal site in Kentucky. The observed degree of sorption (equilibrium K/sub d/) varied unpredictably as a function of solution to solid ratio. Measurements of pH and Eh were performed before and after the determinations to determine if redox conditions were altered significantly during the experiments. The experimental procedure appears capable of maintaining anaerobic conditions during most of the determinations. Changes in solution/solid ratio appear to affect the observed equilibrium sorption more than any variations in redox state during the determinations. However, our final evaluation of the proposed test procedure for measuring sorption of radionuclides from anoxic groundwater is that the test is not completely reliable. Since further improvements in the experimental procedure are not planned, this type of batch sorption test for anoxic waters will be terminated. Organo-radionuclide complex stability experiments in controlled environment chambers were completed. The results indicate that the temporal stability of chelated radionuclides in low redox geochemical environments are not easily predicted from comparisons of appropriate association constants and solubility products. Empirical information is required to reliably predict the behavior of chelated radionuclides under field conditions. Controlled oxidation experiments using disposal site trench waters were initiated. Preliminary results suggest that high contents of dissolved ferrous iron in trench waters can act as redox buffers to preserve low redox conditions during subsurface migration. Data on coprecipitation of radionuclides on ferric oxyhydroxide will be reported when analyses are completed.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5292556
• Report Number(s): NUREG/CR-2192-Vol.1-No.2; BNL-NUREG-51409-Vol.1-No.2; ON: DE82015017
• Country of Publication: United States
• Language: English

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54 ENVIRONMENTAL SCIENCES
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
AMINO ACIDS
BENCH-SCALE EXPERIMENTS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CARBOXYLIC ACIDS
CESIUM 134
CESIUM 137
CESIUM ISOTOPES
CHELATING AGENTS
COBALT 60
COBALT COMPLEXES
COBALT ISOTOPES
COMPLEXES
DATA
DAYS LIVING RADIOISOTOPES
EDTA
ELECTRON CAPTURE RADIOISOTOPES
ENVIRONMENTAL TRANSPORT
EUROPIUM 152
EUROPIUM ISOTOPES
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FEDERAL REGION IV
GROUND WATER
HOURS LIVING RADIOISOTOPES
HYDROGEN COMPOUNDS
INFORMATION
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KENTUCKY
LOW-LEVEL RADIOACTIVE WASTES
MANAGEMENT
MASS TRANSFER
MATERIALS
MINUTES LIVING RADIOISOTOPES
NORTH AMERICA
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PH VALUE
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTES
RADIOISOTOPES
RADIONUCLIDE MIGRATION
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
RESEARCH PROGRAMS
ROCKS
SEDIMENTARY ROCKS
SHALES
SORPTION
SORPTIVE PROPERTIES
STABILITY
STRONTIUM 85
STRONTIUM ISOTOPES
SURFACE PROPERTIES
TRANSITION ELEMENT COMPLEXES
UNDERGROUND DISPOSAL
USA
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
WATER
YEARS LIVING RADIOISOTOPES
ZINC COMPLEXES