Simultaneous degradation of p-nitrophenol and phenol by free and immobilized cells of nocardioides sp. = Nocardioides sp.의 현탁 및 고정화 배양을 통한 파라 니트로 페놀과 페놀의 동시 분해

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A ρ-nitrophenol (PNP) mineralizing bacterium was isolated from industrial wastewater and identified as Nocardioides sp. strain PNP101. This strain could degrade PNP and phenol simultaneously by utilizing PNP as a sole nitrogen source. The addition of phenol enhanced the specific growth rate and specific PNP degradation rate by almost 100%. This seems to be due to the increased cell mass by utilizing different enzyme systems in the degradation of PNP and phenol. This also explains that in the case of low phenol concentration, 4-nitrocatechol was detected transiently after exhaustion of phenol and then disappeared concomitantly with nitrite release and PNP degradation. Calcium alginate immobilized cells enhanced the volumetric degradation rate of PNP and phenol compared to free cells. In semi-continuous cultures, the immobilized cells could mineralize up to 2.5 mM of PNP and phenol, and could be reused 16 times without losing the simultaneous degradation activity.
Advisors
Lee, Sung-Taikresearcher이성택researcher
Description
한국과학기술원 : 생물과학과,
Publisher
한국과학기술원
Issue Date
1996
Identifier
105880/325007 / 000943529
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 생물과학과, 1996.2, [ vi, 52 p. ]

Keywords

4-Nitrocatechol; p-Nitrophenol; Immobilization; Simultaneous degradation; Nocardioides sp.; 노카르디오이데스 종; 4-니트로카테콜; 파라니트로페놀; 고정화; 동시분해

URI
http://hdl.handle.net/10203/28504
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=105880&flag=dissertation
Appears in Collection
BS-Theses_Master(석사논문)
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