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- W3025974443 endingPage "139452" @default.
- W3025974443 startingPage "139452" @default.
- W3025974443 abstract "Owing to the less volatile and less biodegradable nature of weathered fuel-contaminated soil, it cannot be easily remediated using conventional bioremediation approaches. Therefore, this study was aimed to enhance the landfarming bioremediation process by introducing post-oxidation for the degradation of the residual total petroleum hydrocarbons (TPH) in fuel-contaminated field soil. A laboratory-scale landfarming bioaugmentation process was performed by using oil-degrading microbes, nutrients, and surfactants, followed by chemical oxidation as a post treatment. The results demonstrated that the addition of microbes and nutrients gradually decreased the TPH concentration of the soil (initial TPH = 5932 ± 267 mg/kg) with a removal efficiency of 70–72% (TPH > 800 mg/kg; Korean limit for non-residential sites). However, the use of post-oxidation treatments with 5% KMnO4 decreased the TPH to approximately 401–453 mg/kg (TPH below 500 mg/kg; residential site limit) with an overall efficiency of 92–93% compared to the corresponding value of 13% for the control (water treatment). Performing landfarming through biodegradation followed by chemical oxidation as a post treatment could successfully remove the weathered TPH in soil below the regulatory limits. Furthermore, the post-oxidation treatment may oxidize the less biodegradable portions only after biodegradation, thereby minimizing the oxidant demand and enhancing the soil properties such as the pH, amount of natural substrates and microbial population." @default.
- W3025974443 created "2020-05-21" @default.
- W3025974443 creator A5011812465 @default.
- W3025974443 creator A5021091685 @default.
- W3025974443 creator A5024429415 @default.
- W3025974443 date "2020-09-01" @default.
- W3025974443 modified "2023-09-23" @default.
- W3025974443 title "Biodegradation and post-oxidation of fuel-weathered field soil" @default.
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- W3025974443 doi "https://doi.org/10.1016/j.scitotenv.2020.139452" @default.
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