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디젤오염토양 마이크로파 처리 시 TPH의 제거 특성

The Characteristics of TPH Removals by Microwave Radiation for Diesel Contaminated Soil

  • 정승우 (서울과학기술대학교 환경공학과.폐자원 바이오매스 에너지화센터) ;
  • 이태진 (서울과학기술대학교 환경공학과.폐자원 바이오매스 에너지화센터)
  • Jeong, Seung-Woo (Department of Environmental Engineering, Seoul National University of Science & Technology) ;
  • Lee, Tae-Jin (Department of Environmental Engineering, Seoul National University of Science & Technology)
  • 투고 : 2013.10.07
  • 심사 : 2013.10.29
  • 발행 : 2013.11.30

초록

본 연구에서는 마이크로파 조사를 통하여 디젤오염토양의 TPH (Total Petroleum Hydrocarbon) 제거양상을 살펴보고자 하였다. 건조토양을 마이크로파로 조사하였을 때 토양 내 온도의 상승은 완만하였으나 수분이 공급된 상태에서 온도 상승이 급격하게 나타났다. 함수량이 20% 이내 범위에서는 수분함량이 증가할수록 온도가 상승하였으나 20% 이상에서는 오히려 온도가 저하되었다. 100~700 W의 전력량으로 마이크로파를 조사한 후 각각의 TPH의 제거량을 확인하였을 때 300 W 이상의 범위에서는 전력량이 높아짐에도 TPH 제거량에 차이가 많지 않았다. 초기 수분량 20%에서 마이크로 조사 시 최종 TPH 제거량은 60%로 나타났으나 추가적으로 수분을 공급하여 토양 내 함수량을 일정하게 유지하였을 때 약 25%의 TPH 제거 증대효과가 나타났다. 이는 마이크로파를 이용할 때 반응이 지속됨에 따라 수분손실과 더불어 온도가 감소하므로 토양 내 함수량을 유지하는 것이 효율적인 TPH제거를 위해 중요한 요인이 될 수 있다는 것을 나타낸다.

TPH degrdation patterns in diesel contaminated soil was investigated with microwave radiation. When microwave radiation on the soil was applied, temperature increment of the aridic soil was quite low, but temperature in the moist soil was dramatically increased even if short period of running time. Up to 20% of the moisture content, the higher moisture content has more increment of temperature, whereas over 20% of the moisture content, temperature in the soil was rather decreased. when 100~700 W power of microwave radiation was applied into the contaminated soil, a lot of TPH removals was observed under 300 W, but negligible increment of TPH removal was detected over 300 W. 60% of TPH removal was achieved with initial 20% moisture content and microwave radiation. Additional 25% removal was accomplished when moisture content was kept constant during radiation period. It indicated that maintaining of constant moisture is an important factor for TPH removal with microwave radiation because moisture and temperature in the soil are decreased with reaction time.

키워드

참고문헌

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피인용 문헌

  1. Remediation of Bunker Fuel Oil C Contaminated Soil with Microwave Radiation and Heating Elements vol.37, pp.8, 2015, https://doi.org/10.4491/KSEE.2015.37.8.458