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Adsorption of Bromate in Aqueous Solution by the Modified Activated Carbon
The presence of bromate in drinking water has attracted much attention, because it is a carcinogen and mutagenic to humans. Activated carbon is an effective adsorbent material widely used in water treatment. In order to enhance the adsorption of bromate ion on activated carbon, the modified activated carbon was obtained from granular activated carbon by chemical activation using cationic surfactant as an activator. The adsorption characteristics of bromate ion on the modified activated carbon were investigated through adsorption experiments. The effects of temperature, pH in solution, contact time and initial bromate concentration on bromate adsorption by the modified activated carbon were investigated. The experimental data were analysed by the Langmuir and Freundlich models of adsorption. Kinetic adsorption data were analysed by the pseudo-first-order kinetic model and the pseudo-second-order model respectively. The thermodynamics parameters were also calculated.
Keywords
Adsorption, Bromate, Activated Carbon.
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- Bouland, S., Duguet, J.P. and Montiel, A. 2003. Minimizing bromate concentration by controlling the ozone reaction time in a full scale plant. Ozone: Sci. Eng., 26: 381-388.
- Butler, B., Godley, A., Lytton, L. and Cartmell, E. 2005. Bromate environmental contamination: review of impact and possible treatment. Crit. Rev. Environ. Sci. Technol., 35: 193-217.
- Chen, W.F., Zhang, Z.Y., Li, Q. and Wang, H.Y. 2012. Adsorption of bromate and competition from oxyanions on cationic surfactant-modified granular activated carbon. Chem. Eng. J., 203: 319-325.
- Delker, D., Hatch, G., Allen, J., Crissman, B., George, M., Geter, D., Kilburn, S., Moore, T., Nelson, G., Roop, B., Slade, R., Swank, A., Ward, W. and Deangeol, A. 2006. Molecular biomarkers of oxidative stress associated with bromate carcinogenicity. Toxicology, 221: 158-165.
- Ding, L.A., Li, Q., Cui, H., Tang, R., Xu, H., Xie, X.C. and Zhai, J.P. 2010. Electrocatalytic reduction of bromate ion using a polyaniline-modified electrode: an efficient and green technology for the removal of BrO3 - in aqueous solutions. Electrochim. Acta, 55: 8471-8475.
- Duan, X.H., Srinivasakannan, C., Qu, W.W., Wang, X., Peng, J.H. and Zhang, L.B. 2012. Regeneration of microwave assisted spent activated carbon: process optimization, adsorption isotherms and kinetics. Chem. Eng. Process., 53: 53-62.
- Freundlich, H.M.F. 1918. Over the adsorption in solution. J. Phys. Chem., 57: 385-470.
- Gong, C.H., Zhang, Z.G., Qian, Q.L., Liu, D., Cheng Y.J. and Yuan, G.Q. 2013. Removal of bromide from water by adsorption on silver-loaded porous carbon spheres to prevent bromate formation. Chem. Eng. J., 218: 333-340.
- Ho, Y.S. and Mckay, G. 1998. Kinetic models for the sorption of dye from aqueous solution by wood. Trans. Inst. Chem. Eng. B, 76: 183-191.
- Hsu, S. and Singer, P.C. 2010. Removal of bromide and natural organic matter by anion exchange. Water Res., 44: 2133-2140.
- Huang, W.J. and Cheng, Y.L. 2008. Effect of characteristics of activated carbon on removal of bromate. Sep. Purif. Technol., 59: 101-107.
- Johnson, C.J. and Singer, P.C. 2004. Impact of a magnetic ion exchange resin on ozone demand and bromate formation during drinking water treatment. Water Res., 38: 3738-3750.
- Kim, H., Yamada, H. and Tsuno, H. 2007. The removal of estrogenic activity and control of brominated by-products during ozonation of secondary effluents. Water Res., 41: 1441-1446.
- Langmuir, I. 1918. The adsorption of gases on plane surfaces of glass, mica and platinum. J. Am. Chem. Soc., 40: 1361-1403.
- Li, H., Huang, G., An, C., Hu, J. and Yang, S. 2013. Removal of tannin from aqueous solution by adsorption onto treated coal fly ash: kinetic, equilibrium, and thermodynamic studies. Ind. Eeg. Chem. Res., 52: 15923-15931.
- Listiarini, K., Tor, J.T., Sun, D.D. and Leckie, J.O. 2010. Hybrid coagulationnanofiltration membrane for removal of bromate and humic acid in water. J. Membr. Sci., 365: 154-159.
- Moslemi, M., Davies, S.H. and Masten, S.J. 2012. Empirical modeling of bromate formation during drinking water treatment using hybrid ozonation membrane filtration. Desalination, 292: 113-118.
- Sanchez, M., Rivera-Utrilla, J., Salthi, E. and Gunten, U.V. 2007. Ag-doped carbon aerogels for removing halide ions in water treatment. Water Res., 41: 1031-1037.
- Thinakaran, N., Panneerselvam, P., Baskaralingam, P., Elango, D. and Sivanesan, S. 2008. Equilibrium and kinetic studies on the removal of acid red 114 from aqueous solutions using activated carbons prepared from seed shells. J. Hazard. Mater., 158: 142-150.
- Wang, L., Zhang, J., Liu, J.Z., He, H., Yang, M., Yu, J.W., Ma, Z.C. and Jiang, F. 2010. Removal of bromate ion using powdered activated carbon. J. Environ. Sci., 12: 1846-1853.
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