Kinetics of cesium sorption on illite

Journal Article · Sun Mar 01 04:00:00 EST 1992 · Geochimica et Cosmochimica Acta; (United States)

DOI:https://doi.org/10.1016/0016-7037(92)90053-L· OSTI ID:7066840

Comans, R N.J. ^[1]; Hockley, D E ^[2]

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1. Netherlands Energy Research Foundation, Petten (Netherlands)
2. McMaster Univ., Hamilton, Ontario (Canada)

The behavior of anthropogenic cesium isotopes in the aquatic environment is controlled by sorption on solid particles, especially illitic clays. The authors reviewed data previously published and present new results which show that cesium sorption on potassium- and calcium-saturated illite is kinetically controlled. Two kinetic models incorporating Freundlich isotherms and an irreversible process are used to describe sorption data spanning a range of cesium concentrations. Although empirical in nature and origin, the models are consistent with mechanistic hypotheses proposed by earlier workers. The models predict that effectively instantaneous and reversible kinetic processes control cesium sorption over time scales of a few days and less. Irreversible or apparently irreversible sorption is more significant over longer times. The implications of these findings for radiocesium remobilization in anoxic sediments and transport in the water column are discussed.

• OSTI ID: 7066840
• Journal Information: Geochimica et Cosmochimica Acta; (United States), Journal Name: Geochimica et Cosmochimica Acta; (United States) Vol. 56:3; ISSN GCACA; ISSN 0016-7037
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540330* -- Environment
Aquatic-- Radioactive Materials Monitoring & Transport-- (1990-)
ACCIDENTS
ADSORPTION
ADSORPTION ISOTHERMS
ALKALI METAL ISOTOPES
ALKALI METALS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CESIUM
CESIUM 137
CESIUM ISOTOPES
CHEMICAL REACTION KINETICS
CLAYS
DATA
ELEMENTS
ENVIRONMENTAL TRANSPORT
EQUILIBRIUM
EXPERIMENTAL DATA
ILLITE
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTHERMS
ISOTOPES
KINETICS
MASS TRANSFER
MATHEMATICAL MODELS
METALS
NUCLEAR WEAPONS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
POLLUTION
RADIOISOTOPES
RADIONUCLIDE MIGRATION
REACTION KINETICS
REACTOR ACCIDENTS
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TIME DEPENDENCE
WATER POLLUTION
WEAPONS
YEARS LIVING RADIOISOTOPES