Adsorption of organic compounds on carbonate minerals

Principles of demineralization: Modern strategies for the isolation of organic frameworks

“…Numerous laboratory experiments demonstrated that the dissolution of carbonates (calcite and magnesite) is controlled by pH, concentration of HCO 3 À /CO 3 2À ions, and temperature. Despite a number of studies on calcite dissolution in the presence of organic ligands (Perry et al, 2004(Perry et al, , 2005Fredd and Fogler, 1998a,b;Wu and Grant, 2002;Frye and Thomas, 1993;Hoch et al, 2000;Thomas et al, 1993;Compton and Sanders, 1993;Compton and Brown, 1995;Spanos et al, 2006a,b), rarely the effect of variable ligand concentration on the dissolution rate has been rigorously quantified. There are a few data on magnesite dissolution in the presence of ligands at some technologically relevant solution conditions (Hamdona et al, 1995;Demir et al, 2003;Laçin et al, 2005;Bayrak et al, 2006) and Jordan et al (2007) studied ligandcontrolled magnesite dissolution at 100 8C and low pCO 2 in the presence of a single concentration (0.01 M) of organic and inorganic ligands via a combination of macroscopic rate measurements and hydrothermal AFM.…”

Short-term effects of plant litter addition on mineral surface characteristics of young sandy soils

“…The SOM coverage on mineral surfaces occurred probably preferentially at highly reactive sorption sites (Kaiser and Guggenberger, 2003). Since soil organic carbon is mainly binding to the pedogenic fine fraction clay minerals, Wagai et al (2009), Kaiser and Guggenberger (2003) and Thomas et al (1993) assumed that SOC affected both specific and reactive surface areas of soils in a heterogenic, nonlinear form (patchy distribution).…”

Passivation of the calcite surface with phenylmalonate and benzylmalonate ions

“…The dicarboxylic acids inhibit the dissolution and precipitation of calcium carbonate in water [11][12][13], change the dissolution rate [14], influence the rock wettability [15,16], and provide pH buffering in aqueous geological systems [17].…”