Kyoungphile Nam
서울대학교 건설환경공학부 · 환경과학
남경필 교수의 연구실은 환경 오염 물질의 생물학적 분해 및 생태계 복원을 핵심으로 하며, 특히 토양과 수질 오염물질인 페나란트와 같은 다환화합물의 생가용성과 생분해 메커니즘을 연구하고 있습니다. 또한 중금속 혼합 오염의 독성 상호작용을 예측하는 데 초점을 맞춘 생물학적 리간드 모델(BLM) 기반의 환경 위험 평가 기법을 개발하고 있으며, 생물학적 치유 기반의 자가치유 콘크리트 기술도 함께 연구하고 있습니다. 이는 오염 제거와 지속 가능한 환경 기술 개발을 위한 종합적 접근을 추구합니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Phenanthrene was rapidly and extensively mineralized by a bacterium in the presence of glass or polystyrene beads with no pores, silica beads with 2.5−15 nm pores, 3-aminopropyl-bonded silica beads with 6-nm pores, and diatomite beads with 5.4 μm pores. These beads sorbed 10−99% of the compound in 15 h, but 48−100% of the sorbed hydrocarbon was desorbed in 240 h. Although little phenanthrene was desorbed from octadecyl-bonded silica beads with 6-nm pores, the hydrocarbon was rapidly and extensiv
A study was conducted to determine the relationship between organic matter content of soil and the availability of aged phenanthrene. Phenanthrene was aged for 200 days in sterile samples of dissimilar soils, soils treated with H2O2 to reduce the content of organic matter, and sand. Sequestration as measured by the extent of mineralization of phenanthrene by an added bacterium was appreciable in samples with >2.0% organic C, and the bioavailability of the hydrocarbon declined with time of aging.
The combined toxic effects of Cd and Pb in the presence of different concentrations of Ca(2+) were predicted using the biotic ligand model (BLM), with the parameters derived from the Cd-only and Pb-only toxicity data. The BLM-based toxic unit (TU) approach and the proposed BLM-based f(mix) approach were used for prediction. The predicted mixture toxic effects using the BLM-based f(mix) approach were closer to the observed mixture effects (root mean square error [RMSE] = 9.7 at 25 mM Ca(2+) ) tha
