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NTIS 바로가기Korean journal of microbiology = 미생물학회지, v.46 no.2, 2010년, pp.183 - 191
박우정 (경기대학교 생명공학과) , 이상섭 (경기대학교 생명공학과)
In this study, we isolated 179 bacterial strains using benzene, phenol, ethylbenzene, aniline, cumene, toluene as growth substrate from TCE contaminated soils and wastewaters. All the 179 strains were screened for TCE (30 mg/L) removal (growth substrate 0.2 g/L,
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핵심어 | 질문 | 논문에서 추출한 답변 |
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D. acidovorans EK2의 아닐린의 농도에 따른 TCE의 분해 특성을 확인한 결과 아닐린 농도 0.3, 0.4, 0.5 g/L를 첨가하였을 경우 분해속도가 68.2-127.5 nmol/h으로 점점 증가하였으나 0.6 g/L를 첨가하였을 경우 분해속도가 106.7 nmol/h로 오히려 감소하였는데, 이는 무엇 때문으로 추정되는가? | 7 nmol/h로 오히려 감소하였다. 이는 아닐린 농도 0.6 g/L 이상은 TCE와 경쟁적 저해제로서 작용을 하였거나 혹은 아닐린과 TCE의 높은 농도로 인해 EK2에 대해 독성을 나타냈을 것으로 간주된다. | |
한국에서 trichloroethylene은 어떤 곳에서 생산 및 사용되는가? | 휘발성 염화 탄화수소 물질중의 하나인 trichloroethylene (TCE)은 섬유세척제, 금속 탈지제, organic solvent 등 여러 용도로 국내 세탁업체 및 화학 산업계에서 생산 및 사용되어지고 있다(31). 그러나 산업적으로 광범위하게 사용된 TCE는 부적절한 처리방법으로 인해 생태계를 오염시키며, 특히 오염된 토양을 통해 지하수를 오염시킨다(38). | |
TCE의 물리적, 화학적 처리 방법은 어떤 단점이 있는가? | 이러한 TCE의 물리적 처리방법 및 화학적 처리방법으로는각각 소각, 활성탄 흡착 제거법 등이 널리 쓰여지고 있으며 이러한 방법들은 2차적인 오염물질이 발생될 수 있어 사후 처리가 요구되며 높은 설비투자비와 운영비가 요구된다는 단점이 있다. 이 반면에 생물학적 처리 방법은 TCE에 대한 미생물의 생분해능을 이용하여 CO2 등의 무해한 최종산물로 분해시킬수 있어 환경 친화적이며, 운전비 및 설비비도 낮은 것으로 평가되고 있어 대체 기술로써의 중요성을 인정받고 있다(3). |
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