JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Treatment Characteristics of Trichloroethylene(TCE) by Oxidation and Reduction with Nanoscale Zero-valent Iron
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Treatment Characteristics of Trichloroethylene(TCE) by Oxidation and Reduction with Nanoscale Zero-valent Iron
Park, Young-Bae; Jung, Yong-Jun; Choi, Jeong-Hak; Moon, Boung-Hyun;
  PDF(new window)
 Abstract
This study examined the treatment characteristics of hard-to-degrade pollutants such as TCE which are found in organic solvent and cleaning wastewater by nZVI that have excellent oxidation and reduction characteristics. In addition, this study tried to find out the degradation characteristics of TCE by Fenton-like process, in which is dosed additionally. In this study, different ratios of nZVI and , such as 1.0 mM : 0.5 mM, 1.0 mM : 1.0 mM, and 1.0 mM : 2.0 mM were used. When 1.0 mM of nZVI was dosed with 1.0 mM of , the removal efficiency of TOC was the highest and the first order rate constant was also the highest. When 1mM of nZVI was dosed with 0.5 mM of , the first order rate constant and removal efficiency were the lowest. The size of first order rate constant and removal efficiency was in the order of nZVI 1.0 mM : 1.0 mM > nZVI 1.0 mM : 2.0 mM > nZVI 1.0 mM : 0.5 mM > 1.0 mM > nZVI 1.0 mM. It is estimated that when 1.0 mM of nZVI is dosed with 1.0 mM of , ion generated by nZVI and react in the stoichiometric molar ratio of 1:1, thus the first order rate constant and removal efficiency are the highest. And when 1.0 mM of nZVI is dosed with 2.0 mM of , excessive work as a scavenger of OH radicals and excessive reduce into . As for the removal efficiency of TOC in TCE by simultaneous dose and sequential dose of nZVI and , sequential dose showed higher first order reaction rate and removal efficiency than simultaneous dose. It is estimated that when nZVI is dosed 30 minutes in advance, pre-treatment occurs and nanoscale is oxidized to and TCE is pre-reduced and becomes easier to degrade. When is dosed at this time, OH radicals are generated and degrade TCE actively.
 Keywords
nZVI(Nano-sized zero-valent iron);TCE;Fenton oxidation;
 Language
Korean
 Cited by
 References
1.
Agrawal, A., Tratnyek, P. G., 1996, "Reduction of nitro aromatic compounds by zero-valent iron metal", Environ. Sci. & Technol., 30, 153-160. crossref(new window)

2.
Arnold, W. A., Roberts, A. L., 2000, "Pathways and kinetics of chlorinated ethene and chlorinated acetylene reaction with Fe(0) particles", Environ. Sci. & Technol., 34, 1794-1805. crossref(new window)

3.
Choi, S. H., Jang, Y. Y., Hwang, G. Y., Kim, J. H., 1999, "Treatment of hazardous chemicals by Nanoscale Iron powder", Journal of KoSSGE, 4(3), 85-93.

4.
Gilliham, R. W., O'Hannesin, S. F., 1994, "Enhanced degradation of halgenated aliphatics by zero valent iron", Ground Water, 32, 958-967. crossref(new window)

5.
Jeffers, P. M., Ward, L. M., Wolfe, N. L., 1989, "Homogenous hydrolysis rate constants for selected chlorinated methanes, ethanes, ethenes and propanes", Environ. Sci. & Technol., 23, 965-969. crossref(new window)

6.
Johnson, T. L., Scherer, M. M., Tratnyek, P. G., 1996, "Kinetics of halogenated organic compound degradation by iron metal" Environ. Sci. Technol., 30, 2634-2640. crossref(new window)

7.
Joo, S. H., 2004, "Oxidative degradation of organic contaminants using nanoscale zero valent iron", Ph. D. Dissertation, New South Wales University, USA.

8.
O, D. G., 1993, "Oxidation treatment of Organics in Wastewater by Fenton reagent ", Ph. D. Dissertation, Inha University.

9.
Orth, W. S., Gilliham, R. W., 1996, "Dechlorination of trichloroethene in aqueous solution using $Fe^0$", Environ. Sci. & Technol., 30, 66-71. crossref(new window)

10.
Park, S. H., 2005 "Characteristics of Fenton Oxidation in $Fe^0$, $Fe^{(2+)}$, $Fe^{(3+)}$ / $H_2O_2$ Systems", Master of Engineering Dissertation, University of Seoul.

11.
Patterson, J. W., 1985, "Industrial wastewater treatment technology", Butterworth, Boston,

12.
Quinn, J., Geiger, C., Clausen, C., Brooks, K., Coon, C., Ohara, S., 2005, "Field demonstration of DNAPL dehalogenation using emulsified zero-valent iron", Environ. Sci. Technol. 39, 1309-1318. crossref(new window)

13.
Robert, A. L., Totten, L. A., Arnold, W. A., Burris, D. R., Cambell, T. J., 1996, "Reductive elimination of chlorinated ethylenes by zero valent metal", Eviron. Sci. & Technol., 30, 2654-2659. crossref(new window)

14.
Roy, S., Bay, B., Chakravorty, E., 1996, "Magnetic properties of iron nanoparticles grown in a glass matrix", J. Appl. Phys., 79, 1642-1650. crossref(new window)

15.
Shin, H. S., Lim, J. R., 1995, "Processes for the Wastewater Treatment Containing Trichloroethylene (II)", Journal of Korean Society of Environmental Engineer, 17(1), 1079-1088.

16.
Tratnyek, P. G., Matheson, L. J., 1994, "Reductive dehalogenation of chlorlnated methanes by iron metal", Environ. Sci. & Technol., 28, 2045-2053. crossref(new window)

17.
Wang, C. B., Zhang, W. X., 1997, "Synthesizing nanoscale iron particles for rapid and complete dechlorination of TCE and PCBs", Environ. Sci.. & Technol. 31, 2154-2156. crossref(new window)

18.
Zhang, W. X., 2003, "Nanoscale iron particles for environmental remediation: An overview", Journal of Nanoparticle Research, 5, 205-209.