Surface Complexation Model Parameters for Goethite (α-FeOOH)

• Published in: Journal of colloid and interface science Vol. 164; no. 1; pp. 119 - 125
• Main Authors: Lumsdon, David O., Evans, Leslie J.
• Format: Journal Article
• Language: English
• Published: San Diego, CA Elsevier Inc 01.04.1994; Elsevier
• Subjects: Chemistry; Colloidal state and disperse state; Exact sciences and technology; General and physical chemistry; Physical and chemical studies. Granulometry. Electrokinetic phenomena; Complexation; Micellar critical concentration; Transition metal Compounds; Particle suspension; Experimental study; Goethite; Physicochemical properties; Iron Hydroxides oxides

Potentiometric titration studies on a pristine goethite suspension (α-FeOOH) have suggested alternative surface complexation model (SCM) parameters to those currently in use. It is proposed that the intrinsic surface acidity constants pKinta1 and pKinta2 should generally be higher than usually repor...