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Adsorption of chromium from aqueous solution by activated alumina and activated charcoal
Open accessAbstract
Cr(VI) is considered to be potentially carcinogenic to humans. Removal of Cr(VI) ions from aqueous solution under different conditions was investigated using activated alumina (AA) and activated charcoal (AC) as adsorbents. Batch mode experiments were conducted to study the effects of adsorbent dose, contact time, pH, temperature and initial concentration of Cr(VI). Results showed that the adsorption of Cr(VI) depended significantly on pH and temperature. Equilibrium studies showed that Cr(VI) had a high affinity for AA at pH 4 and AC at pH 2. For AA, maximum adsorption was found at 25 degrees C, indicating exothermic adsorption, while for AC, maximum adsorption was at 40 degrees C. Freundlich and Langmuir adsorption isotherms were also applied and they showed good fits to the experimental data. The results suggest that both AA and AC could be used as effective adsorbents for the removal of Cr(VI) ions.
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Cited by
Activated carbons and low cost adsorbents for remediation of tri- and hexavalent chromium from water
Mohan, D., & Pittman Jr., C. U. (2006) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2006.06.060 · Cited by 1,855
Biochar as a low-cost adsorbent for aqueous heavy metal removal: A review
Qiu, B., Tao, X., Wang, H., Li, W., Ding, X., & Chu, H. (2021) · Journal of Analytical and Applied Pyrolysis · doi:10.1016/j.jaap.2021.105081 · Cited by 687
Gupta, S., & Babu, B. V. (2009) · Chemical Engineering Journal · doi:10.1016/j.cej.2009.01.013 · Cited by 461
Lalhruaitluanga, H., Jayaram, K., Prasad, M. N. V., & Kumar, K. K. (2010) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2009.10.005 · Cited by 305
Li, Y., Gao, B., Wu, T., Sun, D., Li, X., Wang, B., & Lu, F. (2009) · Water Research · doi:10.1016/j.watres.2009.04.008 · Cited by 302
Metadata
- Authors
- MOR, S., RAVINDRA, K., & BISHNOI, N.
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2007-03
- Volume
- 98
- Issue
- 4
- Pages
- 954-957
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W2066909201
- Cited by
- 293
- References
- 0
- FWCI
- 14.26
- Type
- journal article
- Language
- en
- Open access
- green
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- MOR, S., RAVINDRA, K., & BISHNOI, N. (2007). Adsorption of chromium from aqueous solution by activated alumina and activated charcoal. Bioresource Technology. https://doi.org/10.1016/j.biortech.2006.03.018
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