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Adsorption of Phosphate on Manganese Dioxide in Seawater
Abstract
The adsorption of phosphate on manganese dioxide (δMnO 2 ) was determined in seawater as a function of pH, temperature, and salinity. The adsorption in a simple electrolyte solution (0.7 M NaCl) was adequately fitted using the triple-layer surface complexation model, assuming that phosphate formed outer-sphere complexes on the surface of δMnO 2 . SO 4 2 - and humic acid were found to suppress the adsorption at low pH, but had no effect in the pH range of seawater. The addition of Ca 2+ and Mg 2+ in 0.7 M NaCl was found to enhance the adsorption of phosphate on δMnO 2 at pH > 4. This increased adsorption might be due to the changes in both the surface charge of δMnO 2 and the solution speciation of phosphate in the presence of Ca 2+ and Mg 2+ . The results suggest that manganese oxides can act as important adsorbents of phosphate in natural waters, as well as in surface sediments, when they are present at higher concentrations than other reactive constituents, such as iron and aluminum oxides.
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Citations
Cited by
Manganese oxide minerals: Crystal structures and economic and environmental significance
Post, J. E. (1999) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.96.7.3447 · Cited by 1,854
Gérard, F. (2016) · Geoderma · doi:10.1016/j.geoderma.2015.08.036 · Cited by 592
Removal of phosphate from water by a Fe–Mn binary oxide adsorbent
Zhang, G., Liu, H., Liu, R., & Qu, J. (2009) · Journal of Colloid and Interface Science · doi:10.1016/j.jcis.2009.03.019 · Cited by 420
Phosphate adsorption on metal oxides and metal hydroxides: A comparative review
Li, M., Liu, J., Xu, Y., & Qian, G. (2016) · Environmental Reviews · doi:10.1139/er-2015-0080 · Cited by 384
A critical review of the reactivity of manganese oxides with organic contaminants
Remucal, C. K., & Ginder-Vogel, M. (2014) · Environmental Science: Processes & Impacts · doi:10.1039/c3em00703k · Cited by 375
A new particulate Mn–Fe–P-shuttle at the redoxcline of anoxic basins
Dellwig, O., Leipe, T., März, C., Glockzin, M., Pollehne, F., Schnetger, B., Yakushev, E. V., Böttcher, M. E., & Brumsack, H.-J. (2010) · Geochimica et Cosmochimica Acta · doi:10.1016/j.gca.2010.09.017 · Cited by 281
Sui, M., Sheng, L., Lu, K., & Tian, F. (2010) · Applied Catalysis B: Environmental · doi:10.1016/j.apcatb.2010.02.005 · Cited by 277
Katsoyiannis, I. A., Zouboulis, A. I., & Jekel, M. (2004) · Industrial & Engineering Chemistry Research · doi:10.1021/ie030525a · Cited by 107
Effect of phosphate complexation on Cd2+ sorption by manganese dioxide (β-MnO2)
Zaman, M. I., Mustafa, S., Khan, S., & Xing, B. (2009) · Journal of Colloid and Interface Science · doi:10.1016/j.jcis.2008.10.053 · Cited by 89
Turnewitsch, R., & Pohl, C. (2010) · Global Biogeochemical Cycles · doi:10.1029/2010gb003820 · Cited by 28
Metadata
- Authors
- Yao, W., & Millero, F. J.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 1996-01-01
- Volume
- 30
- Issue
- 2
- Pages
- 536-541
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W1986327441
- Cited by
- 292
- References
- 0
- FWCI
- 9.00
- Type
- journal article
- Language
- en
- Open access
- closed
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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