Modelling Zn(II) sorption onto clayey sediments using a multi-site ion-exchange model

Fertilization and pH effects on processes and mechanisms controlling dissolved inorganic phosphorus in soils

“…Secondly, for the adsorption of Ca ions onto the hydroxyl surface sites localized at the edge of the montmorillonite, several studies showed that Ca adsorption occurred through innersphere surface complexes (Zachara and Smith, 1994;Ikhsan et al, 2005;Majzik and Tombacz, 2007;Tertre et al, 2009). This finding supported the use of the reaction stoichiometry and charge distribution proposed by Ikhsan et al (2005) for Ca adsorption according to the Basic Stern Model (BSM).…”

Partitioning of lithium between smectite and solution: An experimental approach

“…However, exchangeable Li can be estimated based on the numerous existing data on partitioning of major exchangeable cations between smectites and solutions (Bruggenwert and Kamphorst, 1979;Tertre et al, 2009Tertre et al, , 2011. Na + is the main cation in solution at the end of the syntheses, produced by reaction (1).…”

Influence of the ionic strength and solid/solution ratio on Ca(II)-for-Na+ exchange on montmorillonite. Part 1: Chemical measurements, thermodynamic modeling and potential implications for trace elements geochemistry

“…Owing to their high cation exchange capacity ($1 eq/kg) and their colloidal size that leads to a high specific surface area ($800 m 2 /g for a < 1 lm montmorillonite granulometric fraction [13,14]), these minerals play a pivotal role in controlling the trace element's behavior in natural media. As an example, the sorption properties of soils and sediments towards Zn 2+ cations can be successfully predicted by taking into account only the sorption of this cation onto montmorillonite and illite phases, although these minerals accounted only for $3 and $20 wt.% of the entire material, respectively [5].…”

“…. ), few attempts have been made to account for the sorption properties of each constitutive mineral phase [1][2][3][4][5]. As a very common component of these mineral assemblages, smectite and especially montmorillonite has been particularly well studied [6-12; among others].…”