Sorption of some fission products and actinides in concrete systems

Conference · Wed Jan 01 00:00:00 EST 1986 · Mater. Res. Soc. Symp. Proc.; (United States)

OSTI ID:5414611

Hoeglund, S; Eliasson, L; Allard, B; Andersson, K; Torstenfelt, B

The sorption of some actinides (Th, U, Np, Pu and Am) and fission products (I, Cs) was measured on two types of Standard Portland cements as well as on samples from old (70 years) hydro power dam constructions using a batch technique. Pore water compositions were analyzed, and artificial pore water solutions were used as aqueous phases in the experiments. Measurements were also performed on five other concrete types (not reported in detail in this paper) to illustrate the effects of the cement matrix composition on the sorption behavior of the radionuclides. The sorption of actinides in the trivalent (americium), tetravalent (thorium) pentavalent (neptunium) and hexavalent (uranium) states was high in all the studied concrete systems. Generally, the sorption of cesium was low due to the low exchange capacity of the cement and the high concentration of competing cations in the pore waters. The sorption of iodine was much higher than in most silicate minerals of geologic origin. The differences between the various concrete systems were generally minor in terms of their sorbing capacities.

• Research Organization: Chalmers Univ. of Technology, Goeteborg, Sweden
• OSTI ID: 5414611
• Report Number(s): CONF-850995-
• Journal Information: Mater. Res. Soc. Symp. Proc.; (United States), Vol. 50; Conference: Materials Research Society international symposium, Stockholm, Sweden, 9 Sep 1985
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
54 ENVIRONMENTAL SCIENCES
AMERICIUM
SORPTION
NEPTUNIUM
PLUTONIUM
PORTLAND CEMENT
SORPTIVE PROPERTIES
THORIUM
URANIUM
CESIUM
IODINE
RADIOACTIVE WASTE DISPOSAL
UNDERGROUND DISPOSAL
ACTINIDES
ALKALI METALS
BUILDING MATERIALS
CEMENTS
ELEMENTS
HALOGENS
MANAGEMENT
MATERIALS
METALS
NONMETALS
SURFACE PROPERTIES
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
WASTE DISPOSAL
WASTE MANAGEMENT
053000* - Nuclear Fuels- Environmental Aspects
052002 - Nuclear Fuels- Waste Disposal & Storage
520301 - Environment
Aquatic- Radioactive Materials Monitoring & Transport- Water- (1987)