The Adsorption of Europium to Colloidal Iron Oxyhydroxides and Quartz - The Impact of pH and an Aquatic Fulvic Acid

Ledin, Anna; Karlsson, Simon; Düker, Anders; Allard, Bert

doi:10.1524/ract.1994.6667.s1.213

Cited by 25 publications

(27 citation statements)

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“…It was noted that K d diminishes with increasing concentration of organic matter in subsurface water. These data are consistent with the results obtained by Norden et al (1994) and Ledin et al (1994).…”

Section: Sorption Of Radionuclides To Colloidal Particlessupporting

confidence: 93%

Effect of colloids on transfer of radionuclides by subsurface water

Malkovsky

Pék

2009

Geol. Ore Deposits

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The fluid transfer of radionuclides in the geologic medium is considered under conditions when radionuclides are contained in fluids not only as solutes but also as colloids. The effect of colloidal transport of radionuclides on the rate of spreading of radioactive contamination in an underground medium is estimated, with assessment of this effect in mathematical models describing the transport of radionuclides by subsurface water. For this purpose, the exchange of radionuclides between subsurface water, colloid, and an immobile solid phase is considered, taking into account the precipitation of colloidal particles on both the immobile solid phase and other colloidal particles and their recurrent mobilization into the liquid phase. It is noted that, in real colloidal transfer, the heterogeneity of the geologic medium and colloidal particles in subsurface water is of great importance. The known models of colloidal transfer of radionuclides are evaluated on the basis of the analysis performed.

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Section: Sorption Of Radionuclides To Colloidal Particlessupporting

confidence: 93%

Effect of colloids on transfer of radionuclides by subsurface water

Malkovsky

Pék

2009

Geol. Ore Deposits

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“…7B was obtained for a wet paste of the iron oxyhyroxide goethite (α-FeOOH) following quantitative sorption of Eu 3+ from a pH 5 solution to a sorption density of ∼7.5 µmol g −1 of sorbate [73]. The surface complexation mechanism for Eu 3+ on the iron-oxide hematite at low pH and low sorption densities has been reported to be innersphere in nature with the Eu 3+ ions directly bound to surface Fe-O groups [41,74]. The spectrum shown in Fig.…”

Section: Exchange Site Populations Revisited: Eu 3+ Emission Datamentioning

confidence: 99%

Uranyl sorption by smectites: spectroscopic assessment of thermodynamic modeling

Chisholm-Brause

Berg

Little

et al. 2004

Journal of Colloid and Interface Science

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“…Owing to the high alpha activity of Am(III) and Cm(III) the number of such studies on their sorption by mineral oxides is limited [10,11]. Instead, extensive studies have been carried out using lanthanides as analogue of trivalent actinides [12][13][14][15][16]. The mechanism of the sorption process of metal ions by the mineral oxides is explained in terms of the surface complexation models [17,18].…”

Section: Introductionmentioning

confidence: 99%