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Kinetics of BTEX biodegradation by a coculture of Pseudomonas putida and Pseudomonas fluorescens under hypoxic conditions
Hojae Shim1; Byungho Hwang2; Sang-Seob Lee3; Sung-Ho Kong4
2005-08
Source PublicationBIODEGRADATION
ISSN0923-9820
Volume16Issue:4Pages:319-327
Abstract

Pseudomonas putida and Pseudomonas fluorescens present as a coculture were studied for their abilities to degrade benzene, toluene, ethylbenzene, and xylenes (collectively known as BTEX) under various growth conditions. The coculture effectively degraded various concentrations of BTEX as sole carbon sources. However, all BTEX compounds showed substrate inhibition to the bacteria, in terms of specific growth, degradation rate, and cell net yield. Cell growth was completely inhibited at 500 mg l-1 of benzene, 600 mg l-1 of o-xylene, and 1000 mg l-1 of toluene. Without aeration, aerobic biodegradation of BTEX required additional oxygen provided as hydrogen peroxide in the medium. Under hypoxic conditions, however, nitrate could be used as an alternative electron acceptor for BTEX biodegradation when oxygen was limited and denitrification took place in the culture. The carbon mass balance study confirmed that benzene and toluene were completely mineralized to CO2 and H2O without producing any identifiable intermediate metabolites.

KeywordBiodegradation Btex Coculture Denitrification Pseudomonas Fluorescens Pseudomonas Putida
DOI10.1007/s10532-004-1842-6
Indexed BySCI
Language英语
WOS Research AreaBiotechnology & Applied Microbiology
WOS SubjectBiotechnology & Applied Microbiology
WOS IDWOS:000228644100003
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Citation statistics
Cited Times [WOS]:66   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionFaculty of Science and Technology
DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorSung-Ho Kong
Affiliation1.Department of Civil and Environmental Engineering, University of Macau, Macau
2.Department of Biology, Kyonggi University, Korea
3.Department of Chemical Engineering, Hanyang University, Korea
4.Department of Civil and Environmental Engineering, Hanyang University, Korea
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Hojae Shim,Byungho Hwang,Sang-Seob Lee,et al. Kinetics of BTEX biodegradation by a coculture of Pseudomonas putida and Pseudomonas fluorescens under hypoxic conditions[J]. BIODEGRADATION,2005,16(4):319-327.
APA Hojae Shim,Byungho Hwang,Sang-Seob Lee,&Sung-Ho Kong.(2005).Kinetics of BTEX biodegradation by a coculture of Pseudomonas putida and Pseudomonas fluorescens under hypoxic conditions.BIODEGRADATION,16(4),319-327.
MLA Hojae Shim,et al."Kinetics of BTEX biodegradation by a coculture of Pseudomonas putida and Pseudomonas fluorescens under hypoxic conditions".BIODEGRADATION 16.4(2005):319-327.
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