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

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 im...

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Published in:Applied biochemistry and biotechnology 2019-08, Vol.188 (4), p.1168-1184
Main Authors: Garcia, A. C. F. S., Araújo, B. R., Birolli, W. G., Marques, C. G., Diniz, L. E. C., Barbosa, A. M., Porto, A. L. M., Romão, Luciane Pimenta Cruz
Format: Article
Language:English
Subjects:
Anthropogenic factors
Bacteria
Beads
Biochemistry
Biodegradation
Biodegradation, Environmental
Bioremediation
Biotechnology
Chemistry
Chemistry and Materials Science
Chitosan
Chitosan - chemistry
Contamination
Fluoranthene
Fluorenes - metabolism
Immobilization
Peat
Polycyclic aromatic hydrocarbons
Serratia
Serratia - metabolism
Spectroscopy, Fourier Transform Infrared
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creator Garcia, A. C. F. S.
Araújo, B. R.
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Porto, A. L. M.
Romão, Luciane Pimenta Cruz
description 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.
doi_str_mv 10.1007/s12010-019-02980-9
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source Springer Nature
subjects Anthropogenic factors
Bacteria
Beads
Biochemistry
Biodegradation
Biodegradation, Environmental
Bioremediation
Biotechnology
Chemistry
Chemistry and Materials Science
Chitosan
Chitosan - chemistry
Contamination
Fluoranthene
Fluorenes - metabolism
Immobilization
Peat
Polycyclic aromatic hydrocarbons
Serratia
Serratia - metabolism
Spectroscopy, Fourier Transform Infrared
title Fluoranthene Biodegradation by Serratia sp. AC-11 Immobilized into Chitosan Beads
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