Enhancement of mixture pollutant biodegradation efficiency using a bacterial consortium under static magnetic field

One of the main challenges of bioremediation is to define efficient protocols with low environmental impact and high removal rates, such as static magnetic field (SMF). The aim of this study was to evaluate the effect of SMF exposure on the biodegradation rate of a mixture of pollutants using three...

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Bibliographic Details
Published in:PloS one 2019-01, Vol.14 (1), p.e0208431-e0208431
Main Authors: Mansouri, Ahlem, Abbes, Chiraz, Ben Mouhoub, Ramla, Ben Hassine, Sihem, Landoulsi, Ahmed
Format: Article
Language:English
Subjects:
Analysis
Bacteria
Bacteria - isolation & purification
Bacteria - metabolism
Benzo(a)pyrene - isolation & purification
Biochemistry
Biodegradation
Biodegradation, Environmental
Biology and Life Sciences
Bioremediation
Carbon
Chemical contaminants
Consortia
DDT - isolation & purification
DNA, Ribosomal - genetics
Earth Sciences
Ecology and Environmental Sciences
Engineering and Technology
Environmental impact
Environmental Pollutants - isolation & purification
Gene expression
Kinetics
Laboratories
Lagoons
Magnetic Fields
Microbial Consortia
Microbial contamination
Molecular biology
Pesticides
Phylogeny
Physical Sciences
Pollutants
Polycyclic aromatic hydrocarbons
Pretreatment
Prevention
Rhodococcus equi
Social Sciences
Strains (organisms)
Studies
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Summary:One of the main challenges of bioremediation is to define efficient protocols with low environmental impact and high removal rates, such as static magnetic field (SMF). The aim of this study was to evaluate the effect of SMF exposure on the biodegradation rate of a mixture of pollutants using three bacterial strains which were isolated and identified from the Bizerte lagoon: Pseudomonas stutzeri LBR (KC157911), Cupriavidus metallidurans LBJ (KU659610) and Rhodococcus equi LBB (KU743870). To recognize the improvement role of SMF, the culture was submitted to a pre-treatment with SMF with an induction equal to 200 mT for 5 hours, after that the degradation experiment was followed with individual strains and with a consortium. Results showed an increase by 20% in the growth of the exposed bacterial population compared to controls, and 98% of biodegradation of DDT and 90% for BaP after 30 days of follow-up. This encouraging data opens new perspectives for a bioremediation bioprocess using SMF.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0208431