In this study, zero-valent iron (ZVI) was produced using iron oxide that is a by-product of a pickling line at a steel works. The reaction activity of the produced ZVI was evaluated through a series of decomposition experiments of Orange II aqueous solution. The size of ZVI particles increased with reduction temperature due to coalescence. Correspondingly, the specific surface area of ZVI decreased with increasing reduction temperature. The decomposition efficiency of synthesized ZVI particles was higher at a lower pH. In particular, no significant decomposition reaction was observed at pH of 4 and higher. The rate of the ZVI-assisted decomposition of Orange II was increased by addition of H2O2 at pH of 3, whereas it was reduced by addition of H2O2 at a higher pH of 6. Nevertheless, simultaneous use of ZVI, UV and H2O2 led to a considerable increase in the decomposition rate even at a high pH condition (pH = 6).
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Research Article|
August 01 2011
Degradation of organic dye using zero-valent iron prepared from by-product of pickling line
S. C. Jung;
1Department of Environmental Engineering, Sunchon National University, 315 Maegok, Suncheon, Jeonnam 540-742, Korea
E-mail: [email protected]
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H. C. Cho;
H. C. Cho
1Department of Environmental Engineering, Sunchon National University, 315 Maegok, Suncheon, Jeonnam 540-742, Korea
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D. G. Ra;
D. G. Ra
1Department of Environmental Engineering, Sunchon National University, 315 Maegok, Suncheon, Jeonnam 540-742, Korea
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S. H. Park;
S. H. Park
1Department of Environmental Engineering, Sunchon National University, 315 Maegok, Suncheon, Jeonnam 540-742, Korea
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H. S. Yoon;
H. S. Yoon
2Jeonnam Eco-Industrial Park Development Division, Korea Industrial Complex Corp., 138-12 Joonghung, Yeosu Jeonnam 555-805, Korea
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S. C. Kim;
S. C. Kim
3Department of Environmental Education, Mokpo National University, Muan 534-729, Korea
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S. J. Kim
S. J. Kim
4Department of Nano Science and Technology, Sejong University, 98 Gunja-dong, Gwangjin-ku, Seoul 143-747, Korea
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Water Sci Technol (2011) 64 (4): 960–966.
Article history
Received:
March 23 2010
Accepted:
June 11 2010
Citation
S. C. Jung, H. C. Cho, D. G. Ra, S. H. Park, H. S. Yoon, S. C. Kim, S. J. Kim; Degradation of organic dye using zero-valent iron prepared from by-product of pickling line. Water Sci Technol 1 August 2011; 64 (4): 960–966. doi: https://doi.org/10.2166/wst.2011.744
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