한국환경농학회지 (Korean Journal of Environmental Agriculture)
- 제16권2호
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- Pages.124-129
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- 1997
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- 1225-3537(pISSN)
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- 2233-4173(eISSN)
중금속내성균의 중금속 축적에 미치는 외부요인의 영향
Effect of External Factors on Heavy Metal Accumulation in the Cell of Heavy Metal-Tolerant Microorganisms
- Cho, Ju-Sik (Central Laboratory, Gyeongsang National University) ;
- Lee, Hong-Jae (Dept. of Agricultural Chemistry, Gyeongsang National University) ;
- Lee, Won-Kyu (Dept. of Agricultural Chemistry, Gyeongsang National University) ;
- Heo, Jong-Soo (Dept. of Agricultural Chemistry, Gyeongsang National University)
- 발행 : 1997.06.30
초록
중금속오염폐수처리에 미생물 이용 가능성을 검토하기 위하여 중금속에 강한 내성을 지님과 동시에 균체내 중금속 축적능력이 우수한 중금속 내성균을 분리하여 온도, pH, 및 균체 전배양시간 등과 같은 외부 요인에 따른 균체내 중금속 축적변화를 조사한 결과는 다음과 같다. 중금속화하물 종류에 따른 균체내 중금속 축적량은
This study was performed to develop the biological treatment technology of wastewater polluted with heavy metals. Heavy metal-tolerant microorganisms, such as Pseudomonas putida, P. aeruginosa, P. chlororaphis and P. stutzeri possessing the ability to accumulate cadmium, lead, zinc and copper, respectively, were isolated from industrial wastewater and mine wastewater polluted with various heavy metals. The effect of several external factors, such as temperature, pH and heavy metal compounds on heavy metal accumulation in the cells was investigated. The amount of heavy metal accumulation into cells according to the kind of heavy metal compound was slightly increased in the case of the heavy metal compound with -nitrate group, but generally, there is little change according to the kind of compound in the amount of heavy metal accumulation. The amount of heavy metal accumulation according to the precultured time was increased in the case of the cell precultured for 24 hours, but generally the precultured time did not affect to the amount of heavy metal accumulation. Heavy metal accumulation into cells was affected by several external factors, such as temperature and pH. The optimum temperature and optimum pH of the accumulation of heavy metal into cells were
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