Affiliation:
1. Universiti Teknologi MARA
2. Universiti Teknologi MARA, Malaysia
Abstract
The removal of polycyclic aromatic hydrocarbons (PAHs) from contaminated soil through oxidative degradation by zero valent iron (ZVI) has been investigated in this study. The results showed a fast decrease of PAHs within the first 30 minutes of treatment followed by a slow degradation. The degradation rates coefficient (k) of PAHs analysed using pseudo first-order rate model showed the rate of reaction increased with the increase of ZVI concentrations from 0.003 min-1 at 1% ZVI concentration to 0.011 min-1 at 3% ZVI. However, the normalized surface area constant (kSA) decreased when the ZVI dosage above 3% was applied.
Publisher
Trans Tech Publications, Ltd.
Reference9 articles.
1. Y. Shih, C. Hsu, Y. Su. Reduction of hexachlorobenzene by nanoscale zero-valent iron: Kinetics, pH effect, and degradation mechanism. Separation and Purification Technology. 2011, 76: 268–274.
2. T.L. Johnson, M.M. Scherer, P.G. Tratnyek. Kinetics of halogenated organic compound degradation by iron metal. Environ. Sci. and Technol. 1996, 30: 2634–2640.
3. Y. Kim, W.S. Shin, S. Ko, M. Kim. Reduction of aromatic hydrocarbons by zero valent iron and palladium catalyst. 227th American Chemical Society Meeting, Anaheim, (2004).
4. E. Nelkenbaum, I. Dror, B. Berkowitz. Reductive hydrogenation of polycyclic aromatic hydrocarbons catalyzed by metalloporphyrins. Chemosphere. 2007, 68: 210–217.
5. M. Chang, H. Shu, W. Hsieh, M. Wang. Remediation of soil contaminated with pyrene using ground nanoscale zero-valent iron. J. of the Air & Waste Manage. Assoc. 2007, 57: 221-227.
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