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Phosphate Adsorption on Aluminum-Impregnated Mesoporous Silicates: Surface Structure and Behavior of Adsorbents
Abstract
Phosphorus from excess fertilizers and detergents ends up washing into lakes, creeks, and rivers. This overabundance of phosphorus causes excessive aquatic plant and algae growth and depletes the dissolved oxygen supply in the water. In this study, aluminum-impregnated mesoporous adsorbents were tested for their ability to remove phosphate from water. The surface structure of the materials was investigated with X-ray diffraction (XRD), a N2 adsorption-desorption technique, Fourier transform-infrared (FT-IR), and X-ray photoelectron spectroscopy (XPS) to understand the effect of surface properties on the adsorption behavior of phosphate. The mesoporous materials were loaded with Al components by reaction with surface silanol groups. In the adsorption test, the Al-impregnated mesoporous materials showed fast adsorption kinetics as well as high adsorption capacities, compared with activated alumina. The uniform mesopores of the Al-impregnated mesoporous materials caused the diffusion rate in the adsorption process to increase, which in turn caused the fast adsorption kinetics. High phosphate adsorption capacities of the Al-impregnated mesoporous materials were attributed to not only the increase of surface hydroxyl density on Al oxide due to well-dispersed impregnation of Al components but also the decrease in stoichiometry of surface hydroxyl ions to phosphate by the formation of monodentate surface complexes.
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Sing, K. S. W. (1985) · Pure and Applied Chemistry · doi:10.1351/pac198557040603 · Cited by 24,485
Arsenate and Chromate Retention Mechanisms on Goethite. 1. Surface Structure
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Critical review in adsorption kinetic models
Qiu, H., Lv, L., Pan, B.-C., Zhang, Q.-J., Zhang, W.-M., & Zhang, Q.-X. (2009) · Journal of Zhejiang University-SCIENCE A · doi:10.1631/jzus.a0820524 · Cited by 1,776
Performance and prospects of different adsorbents for phosphorus uptake and recovery from water
Bacelo, H., Pintor, A. M. A., Santos, S. C. R., Boaventura, R. A. R., & Botelho, C. M. S. (2020) · Chemical Engineering Journal · doi:10.1016/j.cej.2019.122566 · Cited by 620
Yao, Y., Gao, B., Inyang, M., Zimmerman, A. R., Cao, X., Pullammanappallil, P., & Yang, L. (2011) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2011.03.083 · Cited by 614
Removal of phosphate species from solution by adsorption onto calcite used as natural adsorbent
Karageorgiou, K., Paschalis, M., & Anastassakis, G. N. (2007) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2006.02.038 · Cited by 428
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
Metadata
- Authors
- Shin, E. W., Han, J. S., Jang, M., Min, S.-H., Park, J. K., & Rowell, R. M.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2003-12-20
- Volume
- 38
- Issue
- 3
- Pages
- 912-917
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W2100262710
- Cited by
- 280
- References
- 2
- FWCI
- 22.64
- Type
- journal article
- Language
- en
- Open access
- closed
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- Shin, E. W., Han, J. S., Jang, M., Min, S.-H., Park, J. K., & Rowell, R. M. (2004). Phosphate Adsorption on Aluminum-Impregnated Mesoporous Silicates: Surface Structure and Behavior of Adsorbents. Environmental Science & Technology. https://doi.org/10.1021/es030488e
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