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Citation: SUN Yan-Ying, LIU Fei, CHEN Hong-Han, HE Wei. Remediation of Diesel-contaminated Soil by Hydrogen Peroxide Oxidation Technology[J]. Chinese Journal of Applied Chemistry, ;2007, 24(6): 680-683. shu

Remediation of Diesel-contaminated Soil by Hydrogen Peroxide Oxidation Technology

1.
Beijing Key Laboratory of Water Resources and Environmental Engineering, China University of Geoscience, Beijing 100083

Corresponding author: CHEN Hong-Han,
Received Date: 19 July 2006
Available Online: 12 October 2006
Fund Project: 北京市教委产学研项目资助(ZH104910540) (ZH104910540)

Heavily diesel-contaminated soil was oxidized with hydrogen peroxide.The effect of pH value of the soil with super-saturated water on the reaction were investigated.The results show that more than 96% of the diesel was degraded within 24 h when pH was about 5~8 for the soil with 5% initial oil content.The pH of the soil solutions reduced from 7.34,6.74,5.78 to 7.02,6.58,5.49 respectively throughout the reaction,which could be attributed mainly to the generation of acid species such as CO₂,H⁺,carboxylic,and β-keto acids.The H₂O₂ concentration in the soil solution decreased greatly from 0.05 mol/L to close to 0 after 1 h.The diesel content in the surface layer varied but decreased in general,while the diesel content in the underlayer declined greatly,showing that the decomposition,volatilization and movement from bottom to top of diesel components occurred during the oxidation reaction.
- hydrogen peroxide oxidation,
- heavily diesel-contaminated soil,
- oil removal efficiency,
- initial oil content
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