Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Remediation of Bunker Fuel Oil C Contaminated Soil with Microwave Radiation and Heating Elements

마이크로파 조사와 발열체를 이용한 벙커C유 오염토양의 복원

  • Oh, Da-kyung (Department of Environmental Engineering, Seoul National University of Science & Technology) ;
  • Lee, Tae-jin (Department of Environmental Engineering, Seoul National University of Science & Technology)
  • 오다경 (서울과학기술대학교 환경공학과) ;
  • 이태진 (서울과학기술대학교 환경공학과)
  • Received : 2015.07.15
  • Accepted : 2015.08.29
  • Published : 2015.08.31
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Abstract

Total petroleum hydrocarbon (TPH) removal and temperature variations in bunker fuel oil C contaminated soil were investigated by using microwave radiation in the presence of triiron oxide or activated carbon as a heating element. Temperature increments of $1.4{\sim}1.6^{\circ}C/Watt$ were observed, when 100~500 watt of microwave radiation was applied for the contaminated soil in the presence of triiron oxide or activated carbon. Temperature variation of the soil was more rapid in the presence of triiron oxide than activated carbon. 10% or 25% of heating element content was required to reach the temperature of thermal desorption for triiron oxide and activated carbon respectively. After radiation, 44.1% and 89.4% of initial TPH in soil was removed in the presence of triiron oxide and activated carbon respectively. It was observed that activated carbon was more reactive than triiron oxide for the removal of high molecular carbon of bunker fuel oil C.

본 연구에서는 사산화삼철과 활성탄을 발열체로 하여 벙커C유 오염토양에 마이크로파를 조사한 후 온도변화 양상 및 TPH 제거효율을 살펴보았다. 사산화삼철 및 활성탄 함유 오염토양에 100~500 Watt로 마이크로파를 조사하였을 때 승온율은 $1.4{\sim}1.6^{\circ}C/Watt$로 나타났다. 조사시간에 따른 온도의 변화는 활성탄보다 사산화삼철 함유토양에서 민감하게 나타났으며, 사산화삼철과 활성탄의 경우 발열체 함량이 각각 10% 이상과 25%에서 열탈착을 위한 충분한 온도가 확보될 수 있음을 관찰하였다. 사산화삼철은 평균 44.1%, 활성탄은 평균 89.4%의 TPH 제거 효율을 나타났으며, 벙커C유의 제거 양상은 활성탄이 함유되었을 때 사산화삼철 보다 고분자탄화수소의 휘발이 더욱 원활하게 진행되고 있음을 확인하였다.

Keywords

References

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