Sorption of graphites at high temperatures. Final report, February 1, 1977-June 30, 1978. [800 to 1100/sup 0/C; pseudo-isopiestic method]

Technical Report · Mon Jun 30 04:00:00 EDT 1980

DOI:https://doi.org/10.2172/5383765· OSTI ID:5383765

Kazi, N. I.; Pyecha, T. D.; Zumwalt, L. R.

This report include: (1) corrected data and new data on cesium sorption by bulk graphite (H-451) with a discussion of anomalies and a comparison of the data; (2) a review of the exponential (Freundlich) isotherm theory and a derivation of the modified-exponential isotherm; (3) a report on a study by the pseudo-isopiestic method of cesium by H-451 graphite powder (size range 44 to 74 ..mu..m) of the type used in the Knudsen cell mass spectrometer method; (4) a comparison of the results on particulate graphite (powder) obtained by the Knudsen cell method and also a comparison of cesium sorption results obtained with the bulk graphite; (5) development of a theory for the kinetics of sorption of a system (cesium and graphite) which shows an exponential (Freundlich) type of sorption; (6) comparison of theoretical with observed kinetics for sorption of cesium by graphite (H-451) powder and a comparison of bulk graphite vs. particulate graphite sorption kinetics; (7) report of a study of the effects of barium on cesium sorption by H-451 graphite at 1000/sup 0/C; and (8) a thermodynamic treatment of mixed sorption and its application to mixed barium-cesium and strontium-cesium sorption by graphite.

• Research Organization: North Carolina State Univ., Raleigh (USA)
• DOE Contract Number: AS05-76EV04682
• OSTI ID: 5383765
• Report Number(s): DOE/EV/04682-4; ON: DE82011151
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
ADSORPTION
ADSORPTION ISOTHERMS
ALKALI METAL ISOTOPES
ALKALI METALS
ALKALINE EARTH ISOTOPES
ALKALINE EARTH METALS
BARIUM
BARIUM 133
BARIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
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CESIUM 137
CESIUM ISOTOPES
DATA
DAYS LIVING RADIOISOTOPES
DESORPTION
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTAL MINERALS
ELEMENTS
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
GRAPHITE
HIGH TEMPERATURE
HOURS LIVING RADIOISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTHERM
ISOTOPE APPLICATIONS
ISOTOPES
KINETICS
METALS
MINERALS
NONMETALS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
PHYSICAL PROPERTIES
RADIOISOTOPES
SORPTION
SORPTIVE PROPERTIES
STRONTIUM
STRONTIUM 85
STRONTIUM ISOTOPES
SURFACE PROPERTIES
TEST FACILITIES
THERMODYNAMIC PROPERTIES
TIME DEPENDENCE
TRACER TECHNIQUES
VAPOR PRESSURE
VERY HIGH TEMPERATURE
YEARS LIVING RADIOISOTOPES