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Application of Ferrate(VI) on the Decomplexation of Cu(II)-EDTA
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  • Journal title : Environmental Engineering Research
  • Volume 13, Issue 3,  2008, pp.131-135
  • Publisher : Korean Society of Environmental Engineering
  • DOI : 10.4491/eer.2008.13.3.131
 Title & Authors
Application of Ferrate(VI) on the Decomplexation of Cu(II)-EDTA
Tiwari, Diwakar; Yang, Jae-Kyu; Chang, Yoon-Young; Lee, Seung-Mok;
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In this study, Fe(VI) was employed as a multi-functional agent to treat the simulated industrial wastewater contaminated with Cu(II)-EDTA through oxidation of EDTA, decomplexation of Cu(II)-EDTA and subsequent removal of free copper through precipitation. The decomplexation of Cu(II)-EDTA species was performed as a function of pH at excess concentration of Fe(VI). It was noted that the acidic conditions favor the decomplexation of Cu(II)-EDTA as the decomplxation was almost 100% up to pH 6.5, while it was only 35% at pH 9.9. The enhanced degradation of Cu(II)-EDTA with decreasing the pH could be explained by the different speciation of Fe(VI). and , which are relatively more reactive than the unprotonated species , are predominant species below neutral pH. It was noted that the decomplexation reaction is extremely fast and within 5 to10 min of contact, 100% of Cu(II)-EDTA was decomplexed at pH 4.0. However, at higher pH (i.e., pH 10.0) the decomplexation process was relatively slow and it was observed that even after 180 min of contact, maximum ca 37% of Cu(II)-EDTA was decomplexed. In order to discuss the kinetics of the decomplexation of Cu(II)-EDTA, the data was slightly fitted better for the second order rate reaction than the first order rate reaction in the excess of Fe(VI) concentration. On the other hand, the removal efficiency of free Cu(II) ions was also obtained at pH 4.0 and 10.0. It was probably removed through adsorption/coagulation with the reduced iron i.e., Fe(III). The removal of total Cu(II) was rapid at pH 4.0 whereas, it was slow at pH 10.0. Although the decomplexation was 100% at lower pH, the removal of free Cu(II) was relatively slow. This result may be explicable due to the reason that at lower pH values the adsorption/coagulation capacity of Fe(III) is greatly retarded. On the other hand, at higher pH values the decomplexation of Cu(II)-EDTA was partial, hence, slower Cu(II) removal was occurred.
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Jiang, J. Q., "Research progress in the use of ferrate(VI) for the environmental remediation," J. Haz. Mat., 146, 617-623 (2007) crossref(new window)

Sharma, V. K., "Potassium ferrate(VI): An environmentally friendly oxidant," Adv. Environ. Res., 6, 143-156 (2002) crossref(new window)

Tiwari, D., Yang, J. K., and Lee, S. M., "Applications of ferrate(VI) in the treatment of wastewaters," Environ. Eng. Res., 10(6), 269-282 (2005) crossref(new window)

Lee, Y., Cho, M., Kim, J. Y., and Yoon, J., "Chemistry of ferrate (Fe(VI)) in aqueous solution and its application as a green chemical," J. Ind. Eng. Chem., 10, 161-171 (2004) crossref(new window)

Rook, J. J., "Formation of haloforms during chlorination of natural waters," Wat. Treat. Exam., 23(2), 234-240 (1974)

Hagg, W. R., and Hoigne, J., "Ozonation of bromide-containing waters: kinetics of formation of hypobromous acid and bromate," Environ. Sci. Technol., 17, 261-267 (1983) crossref(new window)

Yang, J. K., and Lee, S. M., "EDTA effect on the removal of Cu(II) onto $TiO_2$," J. Colloid Interface Sci., 282, 5-10 (2005) crossref(new window)

Nowack, B., Xue, H., and Sigg, L., "Influence of natural and anthropogenic ligands on metal transport during infiltration on river water to groundwater," Environ. Sci. Technol., 31, 866-872 (1997) crossref(new window)

Vanbriesen, J. M., and Rittmann, B. E., "Modeling speciation effects on biodegradation in mixed metal/chelate systems," Biodegradation, 10, 315-330 (1999) crossref(new window)

Ridge, A. C., and Sedlak, D. L., "Effect of ferric chloride addition on the removal of Cu and Zn complexes with EDTA during municipal wastewater treatment," Wat. Res., 38, 921-932 (2004) crossref(new window)

Prairie, M. R., Evans, L. R., Stange, B. M., and Martinez, S. L., "An investigation of titanium dioxide photocatalysis for the treatment of water contaminated with metals and organic chemicals," Environ. Sci. Technol., 27, 1776-1782 (1993) crossref(new window)

Davis. A. P., and Green, D. L., "Photocatalytic oxidation of cadmium-EDTA with titanium dioxide," Environ. Sci. Technol., 33, 609-617 (1999) crossref(new window)

Yang, J. K., and Davis, A. P., "Photocatalytic Oxidation of Cu(II)-EDTA with Illuminated $TiO_2$; Kinetics," Environ. Sci. Technol., 34, 3789-3795 (2000) crossref(new window)

Yang, J. K., and Davis, A. P., "Photocatalytic Oxidation of Cu(II)-EDTA with Illuminated $TiO_2$: Mechanisms," Environ. Sci. Technol., 34, 3796-3801 (2000) crossref(new window)

Lin, S. H., and Juang, R. S., "Removal of free and chelated Cu(II) ions from water by a non-dispersive solvent extraction process," Wat. Res., 36, 3611-3619 (2002) crossref(new window)

Vohra, M. S., and Davis, A. P., "Adsorption of Pb(II), EDTA, and Pb(II)-EDTA onto $TiO_2$," J. Colloid Sci., 198, 18-26 (1998) crossref(new window)

Tiwari, D., Kim, H. U., Choi, B. J., Lee, S. M., Kwon, O. H., Choi, K. M., and Yang, J. K., "Ferrate(VI): a green chemical for the oxidation of cyanide in aqueous/waste solutions," J. Environ. Sci. Health, A42, 803-810 (2007)

Tiwari, D., Lee, S. M., and Yang, J. K., "Ferrate(VI): a green chemical for the oxidation of cyanide and the removal of Cu(II) and Ni(II) in the mixed system of CN-Cu, CN-Ni and CN-Cu-Ni," J. Env. Management, submitted

Yngard, R., Damrongsiri, S., Osathaphan, K., and Sharma, V. K., "Ferrate(VI) oxidation of zinc-cyanide complex," Chemosphere, 69, 729-735 (2007) crossref(new window)

Li, C., Li, X. Z., and Graham, N., "A study of the preparation and reactivity of potassium ferrate," Chemosphere, 56, 949-956 (2004) crossref(new window)

Kamachi, T., Kuono, T., and Yoshizawa, K., "Participation of multioxidants in the pH dependence of the reactivity of ferrate(VI)," J. Org. Chem., 70, 4380-4388 (2005) crossref(new window)

Lockhart, H. B. Jr., and Blakeley, R. V., "Aerobic photodegradation of X(N) chelates of (ethylenedinitrilo)tetraacetic acid (EDTA): implications for natural waters," Environ. Lett., 9, 19-31 (1975) crossref(new window)

Licht, S., Naschitz, V., Halperin, L., Lin, L., Chen, J. J., Ghosh, S., and Liu, B., "Analysis of ferrate(VI) compounds and super-iron Fe(VI) battery cathodes: FTIR, ICP, titrimetric, XRD, UV/VIS, and electrochemical characterization," J. Power Sources, 101, 167-176 (2001) crossref(new window)

Lee, D. G., and Gai, A. H., "Kinetics and mechanism of the oxidation of alcohols by ferrate ion," Can. J. Chem., 71, 1394-1400 (1993) crossref(new window)

Larson, I., and Pugh, R. J., "Coagulation of quartz particles in aqueous solutions of copper(II)," J. Colloids Sci., 208, 399-404 (1998) crossref(new window)