KSBB Journal

The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Biodegradation of Crude Oil and Petroleum Products by Crude Oil-degrading Microorganism

미생물을 이용한 원유 및 원유제품의 분해 특성

  • Published : 2002.06.01
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Abstract

Two kinds of crude oil-degrading microorganisms from soil and one kind from sea were isolated and named strain Al32, strain F722 and strain OM1, respectively. These microorganism were identified Acinetobacter sp., Pseudomonas aeruginosa and Acinetobacter calcoaceticus, respectively. The optimum cultivation temperature of Acinetobacter sp. A132 and P. aeruginosa F722 was $35^{\circ}C$ and optimum growth pH was 8 and 9, respectively. The growth was the highest at 2.0% (w/v) substrate concentration when crude oil was only carbon source. The growth of A. calcoaceticus OM1 isolated from sea was the highest at 3.0% (w/v) of crude oil. In inspection of crude oil degradability, strain Al32 showed 5.49 g/L.day with Eleuthera (OMAN), 2.0% (w/v). P. aeruginosa F722 showed 1.19 g/L g/L.day with L-Zakum (AFRICA). In case of kerosene $nC_9\simnC_{20}$ and diesel $nC_9\simnC_{28}$, A. calcoaceticus OM1 was degraded 95% and 75%, respectively, for 7 days culture, and P. aeruginosa F722 was 80% after 10 days.

토양으로부터 2종류 그리고 해양으로부터 1종류의 원유 분해 미생물을 분리하였고, 이들을 strain A132, strain F722 그리고 strain OM1으로 각각 명명하였다. 이들 미생물은 Acinetobacter sp., Pseudomonas aeruginosa, Acinetobacter calcoaceticus로 각각 동정되었다. Strain Al32, F722의 최적배양 및 분해온도는 $35^{\circ}C$이고, 최적 생장 pH는 각각 8과 9에서 나타났다. 원유를 유일한 탄소 원으로 하여 배양을 하였을 때 원유농도 2.0% (w/v)에서 생장이 높았다. 한편, 해양에서 분리된 strain OM1은 pH 7, 원유농도 3.0% (w/v)에서 생장이 높았다. 원유 분해능 조사에서는 Eleuthera (OMAN) 원유를 2.0% (w/v) 기질로 하였을 때, strain Al32가 5.49g/L.day의 분해능을 나타내었다. 반면, L-Zakum (AFRICA) 원유에서는 strain F722가 1.19 g/L.day의 분해능을 보였다. 등유($nC_9\simnC_{20}$)와 경유 ($nC_{9}\simnC_{28}$)에 대하여 분해특성을 조사한 결과 strain OM1은 배양 7일 후 95, 75%를 각각 분해하였다. Strain F722는 배양10일 후 80%의 분해율을 나타내었다.

Keywords

References

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