지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제23권 제4호
- 발행연도
- 2013.1
- 수록면
- 473 - 482 (10page)
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초록· 키워드
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The desulfurization ability of Sphingomonas subarctica T7b was evaluated using resting and immobilized cells with dibenzothiophene (DBT), alkyl DBTs, and commercial light gas oil (LGO) as the substrates. The resting cells of S. subarctica T7b degraded 239.2 mg of the initial 250 mg of DBT/l (1.36 mM) within 24 h at 27oC, while 127.5 mg of 2-hydroxybiphenyl (2-HBP)/l (0.75 mM) was formed,representing a 55% conversion of the DBT. The DBT desulfurization activity was significantly affected by the aqueous-to-oil phase ratio. In addition, the resting cells of S. subarctica T7b were able to desulfurize alkyl DBTs with long alkyl chains, although the desulfurization rate decreased with an increase in the total carbon number of the alkylated DBTs. LGO with a total sulfur content of 280 mg/l was desulfurized to 152 mg/l after 24 h of reaction.
Cells immobilized by entrapment with polyvinyl alcohol (PVA) exhibited a high DBT desulfurization activity,including repeated use for more than 8 batch cycles without loss of biodesulfurization activity. The stability of the immobilized cells was better than that of the resting cells at different initial pHs, higher temperatures, and for DBT biodesulfurization in successive degradation cycles.
The immobilized cells were also easily separated from the oil and water phases, giving this method great potential for oil biodesulfurization.
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참고문헌 (23)
참고문헌 신청
Bahuguna, A. / 2011 / Desulfurization of dibenzothiophene (DBT) by a novel strain Lysinibacillus sphaericus DMT-7 isolated from diesel contaminated soil / J. Environ. Sci 23
Chang, J. H. / 2000 / Desulfurization of model oils by resting cells of Gordonia sp / Biotechnol. Lett 22 : 193 ~ 196
Dursun, A. Y. / 2005 / Internal mass transfer effect on biodegradation of phenol by Ca-alginate immobilized Ralstonia eutropha / J. Hazard. Mater 126 : 105 ~ 111
Fernandes, P. / 2002 / Use of free and immobilized Pseudomonas putida cells for the reduction of a thiophene derivative in organic media / J. Mol. Catal. B Enzym 19 : 353 ~ 3
Gallagher, J. R. / 1993 / Microbial desulfurization of benzothiophene: A sulfur specific pathway / FEMS Microbiol. Lett 107 : 31 ~ 36
Chang, J. H. / 2000 / Desulfurization of model oils by resting cells of Gordonia sp / Biotechnol. Lett 22 : 193 ~ 196
Dursun, A. Y. / 2005 / Internal mass transfer effect on biodegradation of phenol by Ca-alginate immobilized Ralstonia eutropha / J. Hazard. Mater 126 : 105 ~ 111
Fernandes, P. / 2002 / Use of free and immobilized Pseudomonas putida cells for the reduction of a thiophene derivative in organic media / J. Mol. Catal. B Enzym 19 : 353 ~ 3
Gallagher, J. R. / 1993 / Microbial desulfurization of benzothiophene: A sulfur specific pathway / FEMS Microbiol. Lett 107 : 31 ~ 36
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