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Removal of Cr(VI) by magnetite
Abstract
Magnetite nanoparticles were synthesized by sol-gel method. The highly crystalline nature of the magnetite structure with diameter of around 10 nm was characterized with transmission electron microscopy and X-ray diffractometry. The surface area was determined to be 198 m2/g. Batch experiments were carried out to determine the adsorption kinetics and mechanism of Cr(VI) by these magnetite nanoparticles. The Cr(VI) uptake was mainly governed by physico-chemical adsorption. The adsorption process was found to be pH and temperature dependent. The adsorption data fit well with the Freundlich isotherm equation. The Freundlich constants were calculated at different temperatures. The adsorption capacity increased with rising temperature. Preliminary results indicate that magnetite nanoparticles may be used as an adsorbent for removal of Cr(VI) from wastewater.
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Citations
Cited by
Liu, J.-F., Zhao, Z.-S., & Jiang, G.-B. (2008) · Environmental Science & Technology · doi:10.1021/es800924c · Cited by 1,084
Magnetic nanoparticles for environmental and biomedical applications: a review
Mohammed, L., Gomaa, H. G., Ragab, D., & Zhu, J. (2017) · Particuology · doi:10.1016/j.partic.2016.06.001 · Cited by 682
Cr(VI) Adsorption and Reduction by Humic Acid Coated on Magnetite
Jiang, W., Cai, Q., Xu, W., Yang, M., Cai, Y., Dionysiou, D. D., & O’Shea, K. E. (2014) · Environmental Science & Technology · doi:10.1021/es405804m · Cited by 462
Nanomaterials-enabled water and wastewater treatment
Zhang, Y., Wu, B., Xu, H., Liu, H., Wang, M., He, Y., & Pan, B. (2016) · NanoImpact · doi:10.1016/j.impact.2016.09.004 · Cited by 417
Hu, J., Chen, G., & Lo, I. M. C. (2006) · Journal of Environmental Engineering · doi:10.1061/(asce)0733-9372(2006)132:7(709 · Cited by 369
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Metadata
- Authors
- Hu, J., Lo, I. M. C., & Chen, G.
- Venue
- Water Science and Technology
- Publisher
- IWA Publishing
- Published
- 2004-12-01
- Volume
- 50
- Issue
- 12
- Pages
- 139-146
- ISSN
- 0273-1223 (ISSN-L)
- 1996-9732
- OpenAlex
- W4321429255
- Cited by
- 256
- References
- 0
- FWCI
- 4.59
- Type
- journal article
- Language
- en
- Open access
- closed
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