Efficiency of surfactant-enhanced bioremediation of aged polycyclic aromatic hydrocarbon-contaminated soil: Link with bioavailability and the dynamics of the bacterial community

2018 ◽  
Vol 634 ◽  
pp. 224-234 ◽  
Author(s):  
Martina Cecotti ◽  
Bibiana M. Coppotelli ◽  
Verónica C. Mora ◽  
Marisa Viera ◽  
Irma S. Morelli
Keyword(s):  
Bacterial Community ◽  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Contaminated Soil ◽  
Polycyclic Aromatic ◽  
Enhanced Bioremediation

scholarly journals Bacterial Community Dynamics and Polycyclic Aromatic Hydrocarbon Degradation during Bioremediation of Heavily Creosote-Contaminated Soil

2005 ◽  
Vol 71 (11) ◽  
pp. 7008-7018 ◽  
Author(s):  
Marc Viñas ◽  
Jordi Sabaté ◽  
María José Espuny ◽  
Anna M. Solanas
Keyword(s):  
Bacterial Community ◽  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Contaminated Soil ◽  
Community Dynamics ◽  
Denaturing Gradient Gel Electrophoresis ◽  
Bacterial Species ◽  
Nutrient Treatment ◽  
Bacterial Community Dynamics ◽  
Polycyclic Aromatic

ABSTRACT Bacterial community dynamics and biodegradation processes were examined in a highly creosote-contaminated soil undergoing a range of laboratory-based bioremediation treatments. The dynamics of the eubacterial community, the number of heterotrophs and polycyclic aromatic hydrocarbon (PAH) degraders, and the total petroleum hydrocarbon (TPH) and PAH concentrations were monitored during the bioremediation process. TPH and PAHs were significantly degraded in all treatments (72 to 79% and 83 to 87%, respectively), and the biodegradation values were higher when nutrients were not added, especially for benzo(a)anthracene and chrysene. The moisture content and aeration were determined to be the key factors associated with PAH bioremediation. Neither biosurfactant addition, bioaugmentation, nor ferric octate addition led to differences in PAH or TPH biodegradation compared to biodegradation with nutrient treatment. All treatments resulted in a high first-order degradation rate during the first 45 days, which was markedly reduced after 90 days. A sharp increase in the size of the heterotrophic and PAH-degrading microbial populations was observed, which coincided with the highest rates of TPH and PAH biodegradation. At the end of the incubation period, PAH degraders were more prevalent in samples to which nutrients had not been added. Denaturing gradient gel electrophoresis analysis and principal-component analysis confirmed that there was a remarkable shift in the composition of the bacterial community due to both the biodegradation process and the addition of nutrients. At early stages of biodegradation, the α-Proteobacteria group (genera Sphingomonas and Azospirillum) was the dominant group in all treatments. At later stages, the γ-Proteobacteria group (genus Xanthomonas), the α-Proteobacteria group (genus Sphingomonas), and the Cytophaga-Flexibacter-Bacteroides group (Bacteroidetes) were the dominant groups in the nonnutrient treatment, while the γ-Proteobacteria group (genus Xathomonas), the β-Proteobacteria group (genera Alcaligenes and Achromobacter), and the α-Proteobacteria group (genus Sphingomonas) were the dominant groups in the nutrient treatment. This study shows that specific bacterial phylotypes are associated both with different phases of PAH degradation and with nutrient addition in a preadapted PAH-contaminated soil. Our findings also suggest that there are complex interactions between bacterial species and medium conditions that influence the biodegradation capacity of the microbial communities involved in bioremediation processes.

scholarly journals Pyrosequence analyses of bacterial communities during simulated in situ bioremediation of polycyclic aromatic hydrocarbon-contaminated soil

2012 ◽  
Vol 97 (18) ◽  
pp. 8381-8391 ◽  
Author(s):  
David R. Singleton ◽  
Maiysha D. Jones ◽  
Stephen D. Richardson ◽  
Michael D. Aitken
Keyword(s):  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Contaminated Soil ◽  
Bacterial Communities ◽  
In Situ Bioremediation ◽  
Polycyclic Aromatic

scholarly journals Polycyclic aromatic hydrocarbon sorption and bacterial community composition of biodegradable and conventional plastics incubated in coastal sediments

2021 ◽  
Vol 755 ◽  
pp. 143088
Author(s):  
Pinja Näkki ◽  
Eeva Eronen-Rasimus ◽  
Hermanni Kaartokallio ◽  
Harri Kankaanpää ◽  
Outi Setälä ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Community Composition ◽  
Bacterial Community Composition ◽  
Coastal Sediments ◽  
Polycyclic Aromatic

Bioremediation of a polycyclic aromatic hydrocarbon‐contaminated soil by using different aerobic batch bioreactor systems

1997 ◽  
Vol 6 (3) ◽  
pp. 243-256 ◽  
Author(s):  
D. Pinelli ◽  
F. Fava ◽  
M. Nocentini ◽  
G. Pasquali
Keyword(s):  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Contaminated Soil ◽  
Batch Bioreactor ◽  
Polycyclic Aromatic

Erratum: Monitoring by laser-flow-cytometry of the polycyclic aromatic hydrocarbon-degrading Sphingomonas sp. strain 107 during biotreatment of a contaminated soil

2000 ◽  
Vol 46 (9) ◽  
pp. 866-866
Author(s):  
Jean-Christophe Thomas ◽  
Yves St-Pierre ◽  
Réjean Beaudet ◽  
Richard Villemur
Keyword(s):  
Flow Cytometry ◽  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Contaminated Soil ◽  
Polycyclic Aromatic

scholarly journals Burkholderia sartisoli sp. nov., isolated from a polycyclic aromatic hydrocarbon-contaminated soil

2008 ◽  
Vol 58 (2) ◽  
pp. 420-423 ◽  
Author(s):  
E. Vanlaere ◽  
J. R. van der Meer ◽  
E. Falsen ◽  
J. F. Salles ◽  
E. de Brandt ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Contaminated Soil ◽  
Polycyclic Aromatic
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