Adsorption of humic acids onto goethite: Effects of molar mass, pH and ionic strength

• Published in: Journal of colloid and interface science Vol. 314; no. 1; pp. 107 - 118
• Main Authors: Weng, Liping, Van Riemsdijk, Willem H., Hiemstra, Tjisse
• Format: Journal Article
• Language: English
• Published: San Diego, CA Elsevier Inc 01.10.2007; Elsevier
• Subjects: ADAPT; CD-MUSIC; charge-distribution; Chemistry; Colloidal state and disperse state; competitive adsorption; electrostatic interactions; Exact sciences and technology; Fulvic; fulvic-acid; General and physical chemistry; Humic; Humic acid adsorption; Iron (hydr)oxides; iron-oxide; LCD; mineral particles; natural organic-matter; NICA; nica-donnan model; Surface physical chemistry; variable-charge; Variable-charge particles; water interface; ADAPT; Iron (hydr)oxides; Humic acid adsorption; Fulvic; Variable-charge particles; Humic; LCD; CD-MUSIC; NICA; Iron oxide; Molar mass; Transition element compounds; Particle; Adsorption; Ionic strength; pH; Goethite; Humic acid

In this paper, the LCD (ligand charge distribution) model is applied to describe the adsorption of (Tongbersven) humic acid (HA) to goethite. The model considers both electrostatic interactions and chemical binding between HA and goethite. The large size of HA particles limits their close access to...