Characteristics in oxidative degradation by ozone for saturated hydrocarbons in soil contaminated with diesel fuel
- Title
- Characteristics in oxidative degradation by ozone for saturated hydrocarbons in soil contaminated with diesel fuel
- Author
- 배우근
- Keywords
- ozone; chemical oxidation; diesel fuel; alkanes; remediation; soil vapor extraction
- Issue Date
- 2007-01
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Citation
- CHEMOSPHERE, v. 66, No. 3, Page. 799-807
- Abstract
- Although alkanes are relatively less reactive to chemical oxidation compared to alkenes, the chemical oxidation of alkanes has not been adequately explored in the context of environmental remediation efforts. Laboratory-scale column experiments were therefore conducted with soil artificially contaminated by diesel fuel as a surrogate for alkanes of environmental relevance. Particular attention was paid to saturated hydrocarbons refractory to volatilization. Reaction conditions involve 1485 mg kg(-1) of the initial concentration of diesel range organics (DRO) and a constant ozone concentration of 119 +/- 6 mg l(-1) at the flow rate of 50 ml min(-1). The observed removal of DRO reached 94% over 14 h of continuous ozone injection. Ozone oxidation demonstrated effective removal of non-volatile DRO in the range of C-12-C-24. Each alkane compound displayed comparable degradation kinetics, suggesting virtually no selectivity of ozone reactions with alkanes in soil. A pseudo-first order kinetic model closely simulated the removal kinetics, yielding a reaction rate constant of 0.213 (+/- 0.021) h(-1) and a half-life of 3.3 (+/- 0.3) h under the experimental conditions used in this study. An estimate of ozone demand was 32 mg of O-3 (mg DRO)(-1). (c) 2006 Elsevier Ltd. All rights reserved.
- URI
- https://www.sciencedirect.com/science/article/pii/S0045653506008125https://repository.hanyang.ac.kr/handle/20.500.11754/106203
- ISSN
- 0045-6535; 1879-1298
- DOI
- 10.1016/j.chemosphere.2006.06.053
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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