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Adsorption studies of Mo and V onto ferrihydrite

Adsorption studies of Mo and V onto ferrihydrite
Adsorption studies of Mo and V onto ferrihydrite
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.
0026-461X
385-388
Brinza, L.
98c77294-4c4a-4e61-876d-17c5bd64c764
Benning, L.G.
8b401093-20a1-448c-8af8-bc6ac84c4b49
Statham, P.J.
51458f15-d6e2-4231-8bba-d0567f9e440c
Brinza, L.
98c77294-4c4a-4e61-876d-17c5bd64c764
Benning, L.G.
8b401093-20a1-448c-8af8-bc6ac84c4b49
Statham, P.J.
51458f15-d6e2-4231-8bba-d0567f9e440c

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.

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Published date: February 2008

Identifiers

Local EPrints ID: 64018
URI: https://eprints.soton.ac.uk/id/eprint/64018
ISSN: 0026-461X
PURE UUID: 12c90974-cba8-469b-92a3-4d0f11a9f049

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Date deposited: 25 Nov 2008
Last modified: 13 Mar 2019 20:22

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