Fluoranthene Biodegradation by Serratia sp. AC-11 Immobilized into Chitosan Beads

  • A. C. F. S. Garcia
  • B. R. Araújo
  • W. G. Birolli
  • C. G. Marques
  • L. E. C. Diniz
  • A. M. BarbosaJr
  • A. L. M. Porto
  • Luciane Pimenta Cruz RomãoEmail author


The intensive production of polycyclic aromatic hydrocarbons by anthropogenic activities is a serious environmental problem. Therefore, new bioremediation methods are required to avoid widespread contamination. In this work, Serratia sp. AC-11 strain isolated from a tropical peat was selected for immobilization into chitosan beads, which were employed in the biodegradation of fluoranthene. The sizes of the produced beads were relatively uniform with an average diameter of 3 mm. The material was characterized by SEM and FT-IR, confirming the cells immobilization and the protective barrier formed by the chitosan surrounding the biomass. The immobilized bacteria were able to degrade 56% of fluoranthene (the initial concentration was 100 mg L−1) in just 1 day at twice the degradation rate achieved by free-living cells. Furthermore, the immobilized bacteria showed excellent removal during five reuse cycles, from 76% to 59% of biodegradation. These results showed the potential of this approach for remediation of contaminated sites.


Peat Immobilization Entrapment PAH Bacteria Bioremediation 


Funding Information

Financial support for this work was provided by the Brazilian agencies Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq, process no. 307029/2013-1) and Fundação de Apoio a Pesquisa e Inovação Tecnológica do Estado de Sergipe (FAPITEC/SE, process no. 01920300723/201-1).

Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no conflict of interest.


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • A. C. F. S. Garcia
    • 1
  • B. R. Araújo
    • 1
  • W. G. Birolli
    • 2
  • C. G. Marques
    • 3
  • L. E. C. Diniz
    • 4
  • A. M. BarbosaJr
    • 5
  • A. L. M. Porto
    • 2
  • Luciane Pimenta Cruz Romão
    • 1
    Email author
  1. 1.Laboratory of Natural Organic Matter, Department of ChemistryFederal University of SergipeSao CristovaoBrazil
  2. 2.Laboratory of Organic Chemistry and Biocatalysis, Institute of Chemistry of São CarlosSão Paulo UniversitySao CarlosBrazil
  3. 3.Laboratory of Molecular Biodiversity and Conservation, Department of Genetics and EvolutionFederal University of São CarlosSao CarlosBrazil
  4. 4.Laboratory of Molecular BiologyBrazilian Agricultural Research Corporation (Embrapa)AracajuBrazil
  5. 5.Laboratory of Applied Microbiology, Department of MorphologyFederal University of SergipeSao CristovaoBrazil

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