디젤오염토양 마이크로파 처리 시 TPH의 제거 특성

Abstract

TPH degrdation patterns in diesel contaminated soil was investigated with microwave radiation. When microwave ra- diation on the soil was applied, temperature increment of the aridic soil was quite low, but temperature in the moist soil was dra- matically 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 ne- gligible 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.