Adsorption of humic acid onto a kaolinitic clay studied by high-resolution argon adsorption volumetry

Surface binding site analysis of Ca2+-homoionized clay–humic acid complexes

“…This may increase the amount of humics adsorbed to the clay surface and influence the conformation and orientation of sorbed organic molecules. This process would then dominate the ability of the organic coating and the clay surface to complex trace metal cations in the soil [5,23,26].…”

“…However, very few studies have quantified humic sorption onto the clay surface [4,5,13,[23][24][25][26][27]. Humic substances are mixtures of polydisperse, heterogeneous polyelectrolytes [23,[28][29][30].…”

A nonlinear parametric model for phenanthrene sorption

“…Kaolinite was retained as an inorganic substrate because of its relatively simple structure [10][11][12]. The organic matter used for complex preparation displays various origins.…”

“…Our work is based on a large set of experiments concerning PAH sorption onto various synthetic soils, the raw of which results have been published previously [10][11][12][13][14]. The synthetic soil samples were obtained through organic matter sorption onto a selected clay mineral, kaolinite.…”

Competitive adsorption of metal ions onto goethite–humic acid-modified kaolinite clay

“…The interaction of HS (Saada et al 2003;Wang and Xing 2005;Alekseeva and Zolotareva 2013) and goethite (Grossi and Sparks 1994;Jung et al 1998;Lackovic et al 2003;Gimenez et al 2007) with clays has been well studied. Wang and Xing (2005) pointed out in their study that the aliphatic fraction of humic acid is preferentially adsorbed by clay minerals, while the aromatic fractions are left in solution.…”