Microwave-Assisted Thermal Remediation of Diesel Contaminated Soil

Authors

  • Kuen-Sen Chang National United University
  • Wen-Hung Lo National United University
  • Wen-Min Lin National United University
  • Jun-Xin Wen National United University
  • Shi-Cheng Yang National United University
  • Chu-Jun Huang National United University
  • Hu-Yuan Hsieh National United University

DOI:

https://doi.org/10.4186/ej.2016.20.4.93

Keywords:

Petroleum, diesel, gas station, remediation, total petroleum hydrocarbons.

Abstract

Leakage of petroleum products, gasoline and diesel, at gas station had become one of major soil contamination sources in Taiwan. Total number of 154 petroleum contaminated gas stations was successively ascertained since the implementation of Soil and Groundwater Remediation Act in 2002. One of the contaminated gas stations, mainly diesel polluted, was studied for the feasibility of microwave-assisted thermal remediation. The average of total petroleum hydrocarbons (TPHt) in hotspot of this site was 2,845 mg/kg exceeding regulatory limit (1,000 mg/kg). According to the groundwater condition in the site, soil samples treated by microwave radiation with and without water as saturation and vadose zones were respectively tested in laboratory. The results show that a 12-min microwave energy can heat soil with water to reach 235°C and degrade its TPHt to 934 mg/kg; additionally, a 5 min microwave energy can heat soil without water to reach 220°C and degrade its TPHt to 520 mg/kg. Both soil samples passed TPHt regulatory limit and microwave remediation with fast and effective advantages for petroleum products contaminated soil was also verified.

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Author Biographies

Kuen-Sen Chang
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Department of Safety, Health and Environmental Engineering, National United University, Miao-Li 36063, Taiwan, P. R. China

Wen-Hung Lo
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Department of Safety, Health and Environmental Engineering, National United University, Miao-Li 36063, Taiwan, P. R. China

Wen-Min Lin
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Department of Safety, Health and Environmental Engineering, National United University, Miao-Li 36063, Taiwan, P. R. China

Jun-Xin Wen
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Department of Safety, Health and Environmental Engineering, National United University, Miao-Li 36063, Taiwan, P. R. China

Shi-Cheng Yang
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Department of Safety, Health and Environmental Engineering, National United University, Miao-Li 36063, Taiwan, P. R. China

Chu-Jun Huang
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Department of Safety, Health and Environmental Engineering, National United University, Miao-Li 36063, Taiwan, P. R. China

Hu-Yuan Hsieh
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Department of Safety, Health and Environmental Engineering, National United University, Miao-Li 36063, Taiwan, P. R. China

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Published In
Vol 20 No 4, Aug 29, 2016
How to Cite
[1]
K.-S. Chang, “Microwave-Assisted Thermal Remediation of Diesel Contaminated Soil”, Eng. J., vol. 20, no. 4, pp. 93-100, Aug. 2016.
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