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Arsenic(V) removal with a Ce(IV)-doped iron oxide adsorbent
Open accessAbstract
The removal of arsenic(V) by a new Ce-Fe adsorbent was evaluated under various conditions. Under an initial As(V) of 1.0 mg l(-1), the adsorption capacity of the Ce-Fe absorbent was constant around a value of 16 mgg(-1) over a wide pH range (3-7), while a maximum adsorption capacity of 8.3 mgg(-1) was obtained over a narrow pH range around 5.5 for activated alumina, a conventional adsorbent. Kinetics of adsorption obeys a pseudo-first-order rate equation with the rate constant K(ad) as 1.84 x 10(-3) min(-1). The pattern of adsorption of As(V) by the adsorbent fitted well both the Langmuir and Freundlich models. A Langmuir Q(0) of 70.4 mgg(-1) was obtained at an initial pH of 5.0 and temperature of 20 degrees C, significantly higher than those of other adsorbents reported. Phosphate seriously inhibited the removal of As(V) while fluoride did not compete with As(V) even at an F/As molar ratio as high as 30, suggesting that the adsorption sites for As(V) and fluoride were different. Salinity, hardness, and other inorganic anions such as Cl(-), NO(3)(-), and SO(4)(2-) had no apparent effect on As(V) adsorption. Fourier transform infrared spectra of Ce-Fe adsorbent before and after As(V) adsorption demonstrated that M-OH groups plays an important role for As(V) ions removal in the adsorption mechanisms of Ce-Fe adsorbent.
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Cites
Arsenic Contamination of Groundwater and Drinking Water in Vietnam: A Human Health Threat
Berg, M., Tran, H. C., Nguyen, T. C., Pham, H. V., Schertenleib, R., & Giger, W. (2001) · Environmental Science & Technology · doi:10.1021/es010027y · Cited by 1,096
Cited by
Arsenic removal from water/wastewater using adsorbents—A critical review
Mohan, D., & Pittman, C. U. (2007) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2007.01.006 · Cited by 3,536
Arsenic toxicity, health hazards and removal techniques from water: an overview
Choong, T. S. Y., Chuah, T. G., Robiah, Y., Gregory Koay, F. L., & Azni, I. (2007) · Desalination · doi:10.1016/j.desal.2007.01.015 · Cited by 912
Metal-organic frameworks: Challenges and opportunities for ion-exchange/sorption applications
Kumar, P., Pournara, A., Kim, K.-H., Bansal, V., Rapti, S., & Manos, M. J. (2017) · Progress in Materials Science · doi:10.1016/j.pmatsci.2017.01.002 · Cited by 423
Arsenic removal from high-arsenic water by enhanced coagulation with ferric ions and coarse calcite
Song, S., Lopez-Valdivieso, A., Hernandez-Campos, D. J., Peng, C., Monroy-Fernandez, M. G., & Razo-Soto, I. (2006) · Water Research · doi:10.1016/j.watres.2005.09.046 · Cited by 278
Saiz, J., Bringas, E., & Ortiz, I. (2014) · Journal of Chemical Technology & Biotechnology · doi:10.1002/jctb.4331 · Cited by 79
Metadata
- Authors
- Zhang, Y., Yang, M., & Huang, X.
- Venue
- Chemosphere
- Publisher
- Elsevier BV
- Published
- 2003-06
- Volume
- 51
- Issue
- 9
- Pages
- 945-952
- ISSN
- 0045-6535 (ISSN-L)
- OpenAlex
- W2002965987
- Cited by
- 266
- References
- 1
- FWCI
- 6.49
- Type
- journal article
- Language
- en
- Open access
- green
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- Zhang, Y., Yang, M., & Huang, X. (2003). Arsenic(V) removal with a Ce(IV)-doped iron oxide adsorbent. Chemosphere. https://doi.org/10.1016/s0045-6535(02)00850-0
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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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