Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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The effect of dissolved oxygen and initial complextation of Cu(II) and EDTA on photooxidation of Cu(II)-EDTA by TiO2

TiO2 광측매를 이용한 Cu(II)-EDTA의 산화에서 용존산소와 Cu(II)와 EDTA 초기 당량의 영향

  • Published : 2002.01.01
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Abstract

The effects of initial concentration of dissolved oxygen content, Cu(II) and EDTA in an aqueous Cu(II)-EDTA solution on $TiO_2$ photo-oxidation of EDTA were investigated using $TiO_2$ (Degussa P-25) and UV irradiation at $20{\circ}C$. In the presence of dissolved oxygen and/or Cu(II) the photo-oxidation rates of EDTA were enhanced. The rates linearly increased in the range of initial Cu(II) concentration below 1.79 mM, while abode this concentration those were kept constant. The trend or the EDTA photo-oxidation rates appeared to be akin to the Langmuir-Hinshelwood equation farm and the k values calculated were 0.05 mM/min for the free-EDTA system, and 0.17 mM/min far the Cu(II)-EDTA system. These meant the aqueous EDTA decomposition was enhanced due to weakening of the intra-molecular bond strength of EDTA by complexation with Cu(II) added. It was concluded the decomposition of aqueous EDTA by $TiO_2$ photo-oxidation was maximum in the presence of dissolved oxygen supplied by air purging and of Cu(II) with its concentration for 1:1 Cu(II)-EDTA complexation ratio.

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References

  1. Pleskov, Y. V. and Yu. Ya. Gurevich, 1983, Semiconductor Photoelectrochmistry, P. N. Bartlett Ed., Consultants Bureau, New York, 63-114.
  2. Pelizzetti, E. and M. Schiavello, Ed.. 1991, Photochemical Conversion and Storage of Solar Energy, KIuwer, Dordrecht., 1-26.
  3. Roundhill, D. M, 1994, Photochemistry and Photophyscis of Metal Complexes, J. P. Fackler, Ed., Plenum Press, New York, 1-24.
  4. Schiavello, M, 1988, Fhotocatalysis and Environment-Trends and Applications, KIuwer, Dordrecht., 351-360.
  5. M, Anpo, Ed., 1996, Surface Photochemistry, Wiley, Chichester, 1-17.
  6. M. Schiavello, Ed., 1984, Photoelectrochemistry, Photocatalysis and Photoreactors Fundamentals and Developments, Reidel, Dordrecht., 39-106.
  7. Hoffmann, M. R., S. C. Martin, W. Choi, and D. W. Balmemann, 1995, Environmental Applications of Semiconductor Photocatalysis, Chem. Rev., 95, 69-96. https://doi.org/10.1021/cr00033a004
  8. Cherry, K. F., 1982, Plating wastewater Treatment., Ann Arbor Science Publishers, Ann Arbor, 1-72
  9. Ayres, J. A., 1970, Decontamination of Nuclear Reactors and Equipment., Ronald Press, New York, 6-33.
  10. Madden, T. H., A. K. Datye, and M. Fulton, 1997, Oxidation of Metal-EDTA Complexes by $TiO_2$ Photocatalysis, Environ. Sci. Technol., 31, 3,475-3,481. https://doi.org/10.1021/es970226a
  11. Xue, H. L. Sigg, and F. G. Kari, 1995, Speciation of EDTA in Natural Waters:Exchange Kinetics of Fe-EDTA in River Water, Environ. Sci. Technol., 29, 59-68. https://doi.org/10.1021/es00001a007
  12. Bhattacharyya, D., Y. Ku, 1984, Sulfide Precipitation of Heavy Metals: U. S. Government Printing Office: Washington DC, EPA-600/S2-84-023.
  13. Kari, F. G., Ph. D. Thesis No. 10698, 1994, Swiss Federal Institue of Technologt., ETH, Zurich.
  14. Kari, F. G., and W. Giger, 1995, Modeling the Photochemical Degradation of Ethylenediaminetetraacetate in the River Glatt., Environ. Sci. Technol., 29(11), 2814-2827. https://doi.org/10.1021/es00011a018
  15. Kari, F. G., S. Hilger, and S. Canonica, 1995, Determination of the Reaction Quantum Yield for the Photochemical Degradation of Fe (III)-EDTA: Implications for the Environmental Fate of EDTA in Surface Waters, Environ. Sci. Technol., 29, 1008-1017. https://doi.org/10.1021/es00004a022
  16. Kim, J. P., S. K. Che, et. al., 1991, A Study on the Chemical Cleaning for the Secondary Side of Nuclear Power Plant Steam Generators, KRC-88C-J02, KEPRI.
  17. Ollis, D. F., and H. AI-Ekabi Ed., 1993, Trace Metals in the Environment 3 : Photocatalytic Purification and Treatment of Water and Air, Elsevier, The Netherlands.
  18. Chung, H. H., E. H. Park, J. S. Rho, K. W. Sung, and Y. H. Cho, 1999, Oxidation of Cu(II) -EDTA by $TiO_2$ Photo-Catalysis(I), J. of Korean Ind. & Eng. Chemistry, 10, 154-159.
  19. Chung, H. H. and J. S. Rho, 1999, Photo-oxidation of Fe(III)-EDTA by $TiO_2$( I ), -The effect of $TiO_2$ loading and initial pH of solution, J. Ind. Eng. Chem., 5, 81-87. https://doi.org/10.1021/ie50049a054
  20. Chung, H. H. and J. S. Rho, 1999, Photo-oxidation of EDTA on $TiO_2$, J. Ind. Eng. Chem., 5, 261-267.
  21. Fox, M. A. and M. T. Dulay, 1993, Heterogeneous Photocatalysis, Chem Rev., 93, 341-357. https://doi.org/10.1021/cr00017a016
  22. Prairie, M. R., B. M. Stange, L. R. Evans, and S. L. Martinez, 1991, An Investigation of $TiO_2$ Photocatalysis for the Treatment of water Contaminated with Metals and Organic Chemicals, Environ. Sci. Technol., 27, 1776-1782. https://doi.org/10.1021/es00046a003
  23. Iseda, K., 1991, Oxygen Effect on Photocatalytic Reaction of Ethanol over some Titanium Dioxide Photocatalysts, Bull. Chem. Soc. Jpn., 64, 1160. https://doi.org/10.1246/bcsj.64.1160
  24. Uchihara, T., M. Matsumura, J. Ono, and H. Tsubomura, 1990, Effect of Ethylenediaminetetraacetic Acid on the Photocatalytic Activitied and Flat-Band Potentials of Cadmium Sulfide and Cadmium Selenide, J. Phys. Chem., 94, 415-418. https://doi.org/10.1021/j100364a069
  25. Loy, L. and E. E. Wolf, 1985, Photo Induced Hydrogen Evolution from Water in the Presence of EDTA and a Pt/$TiO_2$ Supported Catalyst., Solar Energy, 34(6), 455-461. https://doi.org/10.1016/0038-092X(85)90019-2
  26. Mattews, R. W. and S. R. McEvoy, 1992, A Comparison of 254 nm and 350 nm Excitaton of $TiO_2$ in Simple Photocatalytic Reactors, J. Photochem. Photobiol. A.: Chem., 66, 355. https://doi.org/10.1016/1010-6030(92)80008-J
  27. Limsebigler, A. L., G. Lu, and J. T. Yates, Jr., 1995, Photocatalytic on $TiO_2$ Surfaces: Principles, Mechanisms, and Selected Result, Chem. Rev., 95, 735-758. https://doi.org/10.1021/cr00035a013
  28. Turchi, C. S. and D. F. Ollis, 1990, Photocatalytic Degradation of Organic Water Contaminants: Mechanisms Involving Hydroxyl Redical Attack, J. Catal., 122, 178-192. https://doi.org/10.1016/0021-9517(90)90269-P