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Liu Qiyou, Li Lin, Zhang Yunbo, Zhao Dongfeng, Zhao Chaocheng. Heavy oil-contaminated soils remediation by Fenton oxidation[J]. Chinese Journal of Environmental Engineering, 2013, 7(4): 1563-1567.
Citation: Liu Qiyou, Li Lin, Zhang Yunbo, Zhao Dongfeng, Zhao Chaocheng. Heavy oil-contaminated soils remediation by Fenton oxidation[J]. Chinese Journal of Environmental Engineering, 2013, 7(4): 1563-1567.
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Heavy oil-contaminated soils remediation by Fenton oxidation

  • 1.

    College of Chemical Engineering, China University of Petroleum, Qingdao 266555, China

  • Received Date: 29/03/2012
    Accepted Date: 24/02/2012
    Available Online: 09/04/2013
    Fund Project:
  • Heavy oil-contaminated soil was treated by Fenton oxidation to improve subsequent microbial remediation effect. 5 mL Fe2+solution of 18 mmol/L and 10 mL H2O2 of 30% were added to 1 000 g heavy oil-contaminated soil of 8%, reacting for 2 h. The total removal rate of petroleum hydrocarbon could reach 31.38%, and the removal rate of colloid and asphaltene could reach 45.22% and 51.26%, respectively by Fenton oxidation. The colloid molecular weight dropped from 1 841 to 1 472, and the asphaltene molecular weight dropped from 5 831 to 5 073 through Fenton oxidation process. Fenton oxidation could reduce tenzyme activity, tmicrobial quantity and respiration intensity of the soil in different levels. The microbial quantities exceeded the original level after Fenton oxidation in 30 days, and the quantity of bacteria was up to 9.84×105 CFU/g. From above results, it can be concluded that Fenton oxidation can effectively remove soil colloid and asphaltene, and accelerate growth rate of microorganisms in soil. Therefore, Fenton oxidation can promote the subsequent microbial remediation.
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Heavy oil-contaminated soils remediation by Fenton oxidation

  • Received Date: 29/03/2012
  • Accepted Date: 24/02/2012
  • Available Online: 09/04/2013
Fund Project:

Abstract: Heavy oil-contaminated soil was treated by Fenton oxidation to improve subsequent microbial remediation effect. 5 mL Fe2+solution of 18 mmol/L and 10 mL H2O2 of 30% were added to 1 000 g heavy oil-contaminated soil of 8%, reacting for 2 h. The total removal rate of petroleum hydrocarbon could reach 31.38%, and the removal rate of colloid and asphaltene could reach 45.22% and 51.26%, respectively by Fenton oxidation. The colloid molecular weight dropped from 1 841 to 1 472, and the asphaltene molecular weight dropped from 5 831 to 5 073 through Fenton oxidation process. Fenton oxidation could reduce tenzyme activity, tmicrobial quantity and respiration intensity of the soil in different levels. The microbial quantities exceeded the original level after Fenton oxidation in 30 days, and the quantity of bacteria was up to 9.84×105 CFU/g. From above results, it can be concluded that Fenton oxidation can effectively remove soil colloid and asphaltene, and accelerate growth rate of microorganisms in soil. Therefore, Fenton oxidation can promote the subsequent microbial remediation.

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