Experimental data and assessment of predictive modeling for radium ion-exchange on beidellite, a swelling clay mineral with a tetrahedral charge

2017 ◽  
Vol 85 ◽  
pp. 1-9 ◽  
Author(s):  
Valentin Robin ◽  
Emmanuel Tertre ◽  
Catherine Beaucaire ◽  
Olivier Regnault ◽  
Michael Descostes
Keyword(s):  
Experimental Data ◽  
Ion Exchange ◽  
Clay Mineral ◽  
Predictive Modeling ◽  
Swelling Clay

Equilibrium Sorptions in Heterogeneous Ion Exchange Membranes

1992 ◽  
Vol 57 (9) ◽  
pp. 1905-1914
Author(s):  
Miroslav Bleha ◽  
Věra Šumberová
Keyword(s):  
Experimental Data ◽  
Ion Exchange ◽  
Total Content ◽  
Distribution Coefficients ◽  
Exchange Capacity ◽  
Ion Exchange Membranes ◽  
Ion Exchange Capacity ◽  
Equilibrium Sorption ◽  
Inhomogeneity Factor

The equilibrium sorption of uni-univalent electrolytes (NaCl, KCl) in heterogeneous cation exchange membranes with various contents of the ion exchange component and in ion exchange membranes Ralex was investigated. Using experimental data which express the concentration dependence of equilibrium sorption, validity of the Donnan relation for the systems under investigation was tested and values of the Glueckauf inhomogeneity factor for Ralex membranes were determined. Determination of the equilibrium sorption allows the effect of the total content of internal water and of the ion-exchange capacity on the distribution coefficients of the electrolyte to be determined.

Compaction of Weathered Clays near Sarnia, Ontario

1974 ◽  
Vol 11 (4) ◽  
pp. 642-647
Author(s):  
T. A. Ogunbadejo ◽  
R. M. Quigley
Keyword(s):  
Clay Mineral ◽  
Surface Soils ◽  
Air Drying ◽  
Swelling Clay ◽  
Compaction Behavior

Oxidation weathering has produced up to 15% swelling clay from originally inactive soil chlorites in the upper 2 m of crustal soils at Sarnia, Ontario. Carbonates have been leached from the upper 1.5 m and deposited at depth.Surface soils containing the montmorillonite compact less efficiently than deeper soils, yielding modified A.A.S.H.O. densities up to 6 p.c.f. less than for deeper soils, provided the samples are not dried prior to compaction. Air drying produces clay mineral collapse and more efficient laboratory compaction, thus hiding the true compaction behavior of the surface soils.

Sorption of Cs, Ni, Pb, Eu(III), Am(III), Cm, Ac(III), Tc(IV), Th, Zr, and U(IV) on MX 80 bentonite: An experimental approach to assess model uncertainty

2006 ◽  
Vol 94 (9-11) ◽  
Author(s):  
Bernd Grambow ◽  
Massoud Fattahi ◽  
Gilles Montavon ◽  
C. Moisan ◽  
E. Giffaut
Keyword(s):  
Experimental Data ◽  
Ion Exchange ◽  
Model Uncertainty ◽  
Mineral Assemblage ◽  
Experimental Approach ◽  
Surface Complexation ◽  
Fission Products ◽  
Exchange Model ◽  
Dissolution Properties

A multi-site surface complexation/ion exchange model for dispersed MX 80 bentonite has been calibrated, considering the dissolution properties of the constituting mineral assemblage, for sorption of a large number of radionuclides, using experimental data from the present study together with well constrained literature data. Emphasis was on tri- and tetravalents actinides and fission products and reducing groundwater compositions.

Ion exchange by a natural clay mineral: A demonstration experiment

1964 ◽  
Vol 41 (11) ◽  
pp. 602
Author(s):  
Joseph F. Mucci ◽  
Charlotte Hollister ◽  
Louise R. Marshall
Keyword(s):  
Ion Exchange ◽  
Clay Mineral ◽  
Natural Clay ◽  
Demonstration Experiment
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