- Heavy Metal Effects on the Biodegradation of Fluorene by Sphingobacterium sp. KM-02 in liquid medium
- Nam, In-Hyun;Kim, Jae-Gon;Chon, Chul-Min;
- Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources (KIGAM);Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources (KIGAM);Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources (KIGAM);
- Sphingobacterium sp. KM-02에 의한 Fluorene 분해에 미치는 배지 내 중금속 영향
- 남인현;김재곤;전철민;
- 한국지질자원연구원 지구환경연구본부 지질재해연구실;한국지질자원연구원 지구환경연구본부 지질재해연구실;한국지질자원연구원 지구환경연구본부 지질재해연구실;
Abstract
The heavy metal effects on the degradation of fluorene by Sphingobacterium sp. KM-02 was determined in liquid cultures. The results showed that 10 mg/L cadmium, copper, zinc, and lead not only affected the growth of KM-02 with fluorene but also the ability of growing or resting cells to degrade this compound. Growth and fluorene degradation were strongly inhibited by cadmium and copper at 10 mg/L, while the inhibitory effect of zinc and lead at the same concentration or at 100 mg/L were not significant. In contrast, arsenic did not affect degradation or growth, even at very high concentrations of 100 mg/L. Subsequent analyses additionally revealed that concentrations of arsenic remained unchanged following incubation, while those of cadmium and copper decreased significantly.
Keywords: Fluorene;Biodegradation;Sphingobacterium sp. KM-02;Heavy metal effects;
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