Paint decontamination kinetics

Journal Article · Sun Apr 01 04:00:00 EST 1984 · Nucl. Technol.; (United States)

OSTI ID:5338254

Thornton, E W

Decontamination kinetics of a high-gloss polyurethane paint have been investigated using a novel flow cell experiment where the sample was counted in situ during decontamination. The /sup 134/Cs, /sup 137/Cs, and /sup 90/Y decontaminations follow a rate law that can be predicted theoretically for contaminant ion desorption from weakly heterogeneous random surface adsorption sites. Paint surfaces show the same decontamination kinetics after damage by abrasion or ultraviolet irradiation prior to contamination. The systems investigated exhibit Freundlich adsorption isotherm behavior during contamination; this is also characteristic of weakly heterogeneous random surfaces and is very commonly observed in ion adsorption studies at low concentrations.

• Research Organization: Central Electricity Generatiny Board, Berkeley Nuclear Lab., Berkeley, Gloucestershire
• OSTI ID: 5338254
• Journal Information: Nucl. Technol.; (United States), Journal Name: Nucl. Technol.; (United States) Vol. 65:1; ISSN NUTYB
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220502* -- Nuclear Reactor Technology-- Environmental Aspects-- Radioactive Effluents
ABRASION
ADSORPTION
ADSORPTION ISOTHERMS
ALKALI METAL ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CESIUM 134
CESIUM 137
CESIUM ISOTOPES
CLEANING
COATINGS
CONTAMINATION
COUNTING TECHNIQUES
DAYS LIVING RADIOISOTOPES
DECONTAMINATION
DESORPTION
ELECTROMAGNETIC RADIATION
FLOW COUNTERS
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTHERMS
ISOTOPES
KINETICS
MATERIALS
MEASURING INSTRUMENTS
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PAINTS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYAMIDES
POLYMERS
POLYURETHANES
RADIATION DETECTORS
RADIATIONS
RADIOISOTOPES
SORPTION
SURFACE CONTAMINATION
SYNTHETIC MATERIALS
ULTRAVIOLET RADIATION
YEARS LIVING RADIOISOTOPES
YTTRIUM 90
YTTRIUM ISOTOPES