Measurement of distribution coefficients of U series radionuclides on soils under shallow land environment(II)

Sakamoto, Yoshiaki; Ishii, Tomoaki; Inagawa, Satoshi; Gunji, Yasuyoshi; Takebe, Shinichi; Ogawa, Hirotaka; Sasaki, Tomozou

doi:10.3327/jnuce.8.65

Cited by 2 publications

(2 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dominant sorption mechanism of Th on the constituent minerals is considered to be surface complexation [4,18,36]. Quartz has silanol sites (ࣕSiOH) on the edge surfaces.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Sorption behavior of thorium onto granite and its constituent minerals

Iida

Yamaguchi

Tanaka

et al. 2016

Journal of Nuclear Science and Technology

View full text Add to dashboard Cite

The sorption behavior of thorium (Th) onto granite and its major constituent minerals, feldspar, quartz and mica were investigated by batch sorption experiments. Experiments were carried out under variable pH and carbonate concentrations. Distribution coefficients (K d) decreased with increased carbonate concentrations and showed the minimal value at around pH 10. This sorption tendency was seen for all the rock and mineral samples, and it was due to the formation of aqueous hydroxo-carbonate complexes of Th in the solutions. The order of sorbability for Th was mica > feldspar > quartz granite. The sorption behaviors of Th were analyzed by the nonelectrostatic surface complexation model with the Visual Minteq computer program. The K d for granite were calculated by component additivity approaches. The model calculations were able to explain the experimental results reasonably well. It was shown that the sorption behavior of Th onto granite can be explained by the complexation with the surface sites of mainly biotite and feldspar.

show abstract

“…The dominant sorption mechanism of Th on the constituent minerals is considered to be surface complexation [4,18,36]. Quartz has silanol sites (ࣕSiOH) on the edge surfaces.…”

Section: Resultsmentioning

confidence: 99%

“…Based on the dominant aqueous Th species (Figure 1), the surface species were assumed as follows [27][28][29][30]36,39]:…”

Section: Analysis Of the Sorption Behavior By The Scmmentioning

confidence: 99%