Study on the biodegradation of crude oil by free and immobilized bacterial consortium in marine environment

Five strains of bacteria, namely, Exiguobacterium sp. ASW-1, Pseudomonas aeruginosa strain ASW-2, Alcaligenes sp. ASW-3, Alcaligenes sp. ASS-1, and Bacillus sp. ASS-2, were isolated from the Zhejiang coast in China. The mixed flora of the five strains performed well with degrading 75.1% crude oil (1...

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Vydáno v:PloS one Ročník 12; číslo 3; s. e0174445
Hlavní autoři: Chen, Qingguo, Li, Jingjing, Liu, Mei, Sun, Huiling, Bao, Mutai
Médium: Journal Article
Jazyk:angličtina
Vydáno: United States Public Library of Science 27.03.2017
Public Library of Science (PLoS)
Témata:
Acenaphthene
Activated carbon
Adsorption
Agar
Agglomeration
Alcaligenes
Alginic acid
Alkanes
Annual variations
Anthracene
Bacteria
Bacteria - metabolism
Beef
Benzo(a)pyrene
Biodegradation
Biodegradation, Environmental
Biology and Life Sciences
Bioremediation
Biotransformation
Calcium alginate
Consortia
Crude oil
Deep sea
Drug tolerance
Earth Sciences
Ecology and Environmental Sciences
Efficiency
Engineering and Technology
Environment
Environmental aspects
Environmental factors
Immobilization
Marine environment
Marine microorganisms
Media
Microorganisms
Oceans and Seas
Offshore
Petroleum
Petroleum - microbiology
Physical Sciences
Pollution
Polycyclic aromatic hydrocarbons
Porous materials
Production processes
Properties
Science
Social Sciences
Studies
Temperature effects
Toxicity
Trace elements
Wetlands
China
ISSN:1932-6203, 1932-6203
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Popis
Shrnutí:Five strains of bacteria, namely, Exiguobacterium sp. ASW-1, Pseudomonas aeruginosa strain ASW-2, Alcaligenes sp. ASW-3, Alcaligenes sp. ASS-1, and Bacillus sp. ASS-2, were isolated from the Zhejiang coast in China. The mixed flora of the five strains performed well with degrading 75.1% crude oil (1%, w/v) in 7 days. The calcium alginate-activated carbon embedding carrier was used to immobilize bacterial consortium. Immobilized cells performed better than free ones in variations of environmental factors containing incubated temperature, initial pH, salinity of the medium and crude oil concentration. The degradation process of crude oil by immobilized bacteria was accelerated compared with that of the free ones. Bacterial consortium showed better performance on biodegradation of normal alkanes than that of PAHs. Improvement of immobilization on the biodegradation efficiency of normal alkanes (31.9%) was apparently high than that of PAHs (1.9%).
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SourceType-Scholarly Journals-1
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Competing Interests: The authors have declared that no competing interests exist.
Conceptualization: QC.Data curation: JL ML.Formal analysis: ML.Funding acquisition: QC.Investigation: JL HS.Methodology: QC HS.Project administration: QC.Resources: QC ML.Software: QC.Supervision: QC.Validation: QC.Visualization: QC.Writing – original draft: QC JL.Writing – review & editing: QC MB.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0174445