Adsorption studies of Mo and V onto ferrihydrite

Brinza, L., Benning, L.G. and Statham, P.J. (2008) Adsorption studies of Mo and V onto ferrihydrite. Mineralogical Magazine, 72 (1), 385-388. (doi:10.1180/minmag.2008.072.1.385).

Record type: Article

Abstract

In this paper, the kinetics of Mo and V (100 ?M) uptake on ferrihydrite (FHY) were evaluated in batch, mono-sorbate systems at pH between 4 and 9, and in bi-sorbate systems in the presence of P (100 ?M) at pH 7. In the Mo and V single-sorbate experiments, 100% adsorption was observed at pH values below 6 and 8, respectively. Above the point of zero charge (PZC = 7.97) of FHY, the adsorption efficiency for Mo dropped dramatically (20% at pH 8) while V showed high uptake efficiencies even at pH 9 (60% efficiency). The results from the bi-sorbate experiments (Mo-P and V-P) showed that at pH 7, P out-competed (97%) Mo for binding sites on FHY, while in the V-P binary system only ?44% of the binding sites are occupied by P with the remaining sites being occupied by V.

This record has no associated files available for download.