한국환경과학회지 (Journal of Environmental Science International)

  • 제9권4호
  • /
  • Pages.331-337
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  • 2000
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  • 1225-4517(pISSN)
  • /
  • 2287-3503(eISSN)
한국환경과학회 (The Korean Environmental Sciences Society)
권호 표지

납 이온의 생물흡착에 따른 미생물들의 변화

A Variation of Microorganisms by the Biosorption of Pb\ulcorner

  • 김동석 (대구효성카톨릭대학교 환경과학과) ;
  • 서정호 (울산과학대학 환경공업화학과) ;
  • 송승구 (부산대학교 화학공학과)
  • 발행 : 2000.08.01
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초록

The variation of microorganisms (activated slude, Saccharomyces cerevisiae, Aureobasidium pullulans) caused by the biosorption of $Pb^{2+}$ was observed by TEM and microscope. By the TEM observation of S. cerevisiae, the plasmolysis and lysis of cell wall or cell membrane were occurred by the penetration of $Pb^{2+}$ into the inner cellular region. However, in the case of A. pullulans, the plasmolysis and lysis of cell wall or cell membrane were not occurred because of the prevention of $Pb^{2+}$ penetration by the extracelluar polymeric substances (EPS). A flocculation of microorganisms, in the case of A. pullulans, was observed by the $Pb^{2+}$ accumulation after 3~4 h and the color was changed from white to black after 1 day. The flocculation of activated sludge was improved by the accumulation $Pb^{2+}$ after 1 h, however, the floc was broken up and the settling efficiency decreased after 1 day.

키워드

참고문헌

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