Paper Details
Bibliographic Data:
| Code: |
JLMGE09 |
| Paper Type: |
Article |
| Author(s): |
Jordan N, Lomenech C, Marmier N, Giffaut E, Ehrhardt JJ |
| Title: |
Sorption of selenium(IV) onto magnetite in the presence of silicic acid |
| Journal: |
Journal of Colloid and Interface Science
Volume: 329 Year: 2009 Pages: 17-23
ISSN-Print: 0021-9797 |
| Internal Storage: |
V3627 |
| DOI: |
10.1016/j.jcis.2008.09.052 |
| Abstract: |
Sorption of selenium(IV) and silicic acid onto magnetite (Fe3O4) was investigated in binary systems, with concentrations of silicic acid under the solubility limit of amorphous silica. Using the double diffuse
layer model (DDLM), surface complexation constants of selenium(IV) and H4SiO4 onto magnetite were
extracted using Fiteql 4.0. Then, prediction curves of the sorption of selenium(IV) in the presence of silicic acid onto magnetite were obtained, using the calculated surface complexation constants.
Finally, laboratory experiments were performed and showed a competition between selenium(IV) and silicic acid for the surface sites of magnetite. Experimental results matched the model predictions, confirming its ability to model qualitatively and quantitatively the ternary system. |
| Comment: |
SSA, SCM, RAW_GRAPH (sorption of Se(IV) (%) as a function of pH) |
Surface Area
|
Site Density / Protolysis
|
Complex Formation
|
Formatted Citation
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