Adsorption and polymerisation of silicic acid on ferrihydrite, and its effect on arsenic adsorption

The interaction between silicic acid (H 4SiO 4) and ferrihydrite involves both adsorption and polymerisation, and has a significant effect on the adsorption of anionic species such as the oxyanions of arsenic. Using the diffuse layer model (DLM), the adsorption constants for H 4SiO 4, As(V), and As(...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Water research (Oxford) 1999-11, Vol.33 (16), p.3413-3422
Hauptverfasser:	Swedlund, Peter J., Webster, Jenny G.
Format:	Artikel
Sprache:	eng
Schlagworte:	adsorption Applied sciences arsenic Biological and physicochemical phenomena diffuse layer model Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics Exact sciences and technology ferrihydrite Hydrogeology Hydrology. Hydrogeology Natural water pollution Pollution Pollution, environment geology silicic acid Water treatment and pollution
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The interaction between silicic acid (H 4SiO 4) and ferrihydrite involves both adsorption and polymerisation, and has a significant effect on the adsorption of anionic species such as the oxyanions of arsenic. Using the diffuse layer model (DLM), the adsorption constants for H 4SiO 4, As(V), and As(III) adsorption onto ferrihydrite have been determined from experimental adsorption data. Silicic acid could be considered to adsorb as a monomer when the total Si to Fe mole ratio (Si (T)/Fe) was
ISSN:	0043-1354 1879-2448
DOI:	10.1016/S0043-1354(99)00055-X