Study of cobalt sorption on polyethylene

Journal Article · Thu Dec 01 00:00:00 EST 1994 · Journal of Colloid and Interface Science; (United States)

DOI:https://doi.org/10.1006/jcis.1994.1441· OSTI ID:6868910

Kolics, A; Varga, K ^[1]

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1. Univ. of Veszprem (Hungary). Dept. of Radiochemistry

The accumulation of cobalt on various surfaces, especially on oxides, has been the subject of intensive research for decades. Part of these studies were devoted to the analysis of cobalt uptake on oxides, which are transported in the primary coolant of water-cooled nuclear reactors. Radioactive isotopes of cobalt ([sup 60]Co and [sup 58]Co) make a predominant contribution to the radioactivity of corrosion products. The investigation of cobalt accumulation on inert surfaces in solutions of well-defined composition may contribute to the better understanding of the results of contamination-decontamination experiments carried out on noninert adsorbents in various solutions. The results gained from the study of cobalt accumulation on polyethylene are presented in this paper. To clarify the role of colloid formation, the presence of borate species, and the surface properties of polyethylene in accumulation process, several independent techniques such as the in situ radiotracer method, centrifugation, FTIR, and Raman spectroscopy are used. From the results, it can be stated that the kinetics of cobalt accumulation is dependent on the pH and composition of the solution phase. The accumulation of cobalt proceeds in both colloid and ionic forms; however, the amount of sorbed ionic cobalt species increases with pH due to their accumulation on colloids. The lower cobalt accumulation in borate-containing solution is attributed to the lower amount of colloid formation.

• OSTI ID: 6868910
• Journal Information: Journal of Colloid and Interface Science; (United States), Vol. 168:2; ISSN 0021-9797
• Country of Publication: United States
• Language: English

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37 INORGANIC
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PHYSICAL AND ANALYTICAL CHEMISTRY
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POLYETHYLENES
SORPTIVE PROPERTIES
PRIMARY COOLANT CIRCUITS
WATER CHEMISTRY
PWR TYPE REACTORS
ADSORPTION ISOTHERMS
BORIC ACID
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PH VALUE
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COOLING SYSTEMS
ELEMENTS
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ENRICHED URANIUM REACTORS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTHERMS
ISOTOPE APPLICATIONS
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METALS
MINUTES LIVING RADIOISOTOPES
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
POLYMERS
POLYOLEFINS
POWER REACTORS
RADIOISOTOPES
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTORS
SORPTION
SURFACE PROPERTIES
THERMAL REACTORS
TRANSITION ELEMENTS
WATER COOLED REACTORS
WATER MODERATED REACTORS
YEARS LIVING RADIOISOT
400105* - Separation Procedures
210200 - Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled