Dechlorination of Hexachlorobenzene by Zero-Valent Iron
Publication: Practice Periodical of Hazardous, Toxic, and Radioactive Waste Management
Volume 8, Issue 2
Abstract
Chemical reduction of hexachlorobenzene (HCB) by metallic iron was investigated. Since the percentage of HCB transformation is almost the same as that of chloride ion production, no chlorinated intermediates in the solution was formed during the reduction reaction. The solution pH went to around 8.0 even though the initial pH was 10 or lowered to 3. The reaction is pseudofirst order with respect to HCB concentration. The optimum dosage of iron particles for the dechlorination of HCB varies with the HCB concentration. For example, when the initial concentration of HCB was the highest transformation rate of HCB occurred with using at 350 g/L of iron particles; the optimum dosage shifted to around 500 g/L when the HBC concentration was
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References
Agrawal, A., and Tratnyek, P. G.(1996). “Reduction of nitro aromatic compounds by zero-valent iron metal.” Environ. Sci. Technol., 30(1), 153–160.
Cantrell, K. J., Kaplan, D. I., and Wietsma, T. W.(1995). “Zero-valent iron for the in situ remediation of selected metals in groundwater.” J. Higher Educ., 42, 201–212.
Chang, B.-V., Chen, Y.-M., Yuan, S.-Y., and Wang, Y.-S.(1997). “Reductive dechorination of hexachlorobenzene by an anaerobic mixed culture.” Water, Air, Soil Pollut., 100, 25–32.
Choe, S., Chang, Y.-Y., Hwang, K.-Y., and Khim, J.(2000). “Kinetics of reductive denitrification by nanoscale zero-valent iron.” Chemosphere, 41, 1307–1311.
Gillham, R., and O’Hannesin, F.(1994). “Enhanced degradation of halogenated aliphatics by zero-valent iron.” Ground Water, 32, 958–967.
Gotpagar, J., Grulke, E., Tsang, T., and Bhattacharyya, D.(1997). “Reductive dehalogenation of trichloroethylene using zero-valent iron.” Environ. Prog., 16, 137–143.
Huang, C.-P., Wang, H.-W., and Chiu, P.-H.(1998). “Nitrate reduction by metallic iron.” Water Res., 32(8), 2257–2264.
Kang, S. F., Liao, C. H., and Hung, H. P.(1999). “Peroxidation treatment of dye manufacturing wastewater in the presence of ultraviolet light and ferrous ions.” J. Higher Educ., B65, 317–333.
Kim, Y., and Carraway, E.(2000). “Dechlorination of pentachlorophenol by zero valent iron and modified zero valent irons.” Environ. Sci. Technol., 34(10), 2014–2017.
Matheson, L. J., and Tratnyek, P. G.(1994). “Reductive dehalogenation of chlorinated methanes by iron metal.” Environ. Sci. Technol., 28(12), 2045–2053.
Xu, Y., and Zhang, W.-X.(2000). “Subcolloidal Fe/Ag particles for reductive dehalogenation of chlorinated benzenes.” Ind. Eng. Chem. Res., 39(7), 2238–2244.
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Published In
Practice Periodical of Hazardous, Toxic, and Radioactive Waste Management
Volume 8 • Issue 2 • April 2004
Pages: 136 - 140
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: Mar 15, 2003
Accepted: Mar 15, 2003
Published online: Mar 15, 2004
Published in print: Apr 2004
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