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Novel application of cyclolipopeptide amphisin: feasibility study as additive to remediate polycyclic aromatic hydrocarbon (PAH) contaminated sediments.

Groboillot A, Portet-Koltalo F, Le Derf F, Feuilloley MJ, Orange N, Poc CD - Int J Mol Sci (2011)

Bottom Line: Pure amphisin from Pseudomonas fluorescens DSS73 displays increased effectiveness in releasing polycyclic aromatic hydrocarbons (PAHs) strongly adsorbed to sediments when compared to a synthetic anionic surfactant.DSS73's growth is weakened by three model PAHs above saturation, but amphisin is still produced.Estuarine water feeding the dredged material disposal site of a Norman harbor (France) allows both P. fluorescens DSS73 growth and amphisin production.

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Cold Microbiology-Signals and Microenvironment, University of Rouen, EA 4312, 55 rue Saint Germain, 27000 Evreux, France; E-Mails: anne.groboillot@univ-rouen.fr (A.G.); marc.feuilloley@univ-rouen.fr (M.J.G.F.); nicole.orange@univ-rouen.fr (N.O.).

ABSTRACT
To decontaminate dredged harbor sediments by bioremediation or electromigration processes, adding biosurfactants could enhance the bioavailability or mobility of contaminants in an aqueous phase. Pure amphisin from Pseudomonas fluorescens DSS73 displays increased effectiveness in releasing polycyclic aromatic hydrocarbons (PAHs) strongly adsorbed to sediments when compared to a synthetic anionic surfactant. Amphisin production by the bacteria in the natural environment was also considered. DSS73's growth is weakened by three model PAHs above saturation, but amphisin is still produced. Estuarine water feeding the dredged material disposal site of a Norman harbor (France) allows both P. fluorescens DSS73 growth and amphisin production.

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Adsorption isotherms of different PAHs at water/kaolin interface in the presence of SDS (8 × 10−2 mol·L−1) or amphisin (7.2 × 10−4 mol·L−1) and in their absence at 25 °C. (A) phenanthrene; (B) indeno[1,2,3,cd]pyrene.
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f3-ijms-12-01787: Adsorption isotherms of different PAHs at water/kaolin interface in the presence of SDS (8 × 10−2 mol·L−1) or amphisin (7.2 × 10−4 mol·L−1) and in their absence at 25 °C. (A) phenanthrene; (B) indeno[1,2,3,cd]pyrene.

Mentions: Based on previous results, kaolin seems to be the most powerful PAHs adsorbent through sediment components, so amphisin efficiency was first evaluated on kaolin. The mixture of 15 PAHs was used to pollute our model sediment. In this part of the study, for more clarity, we report only phenanthrene, representing low weight PAHs (Figure 3A), and indeno[1,2,3,cd]pyrene, representing heavier PAHs (Figure 3B).


Novel application of cyclolipopeptide amphisin: feasibility study as additive to remediate polycyclic aromatic hydrocarbon (PAH) contaminated sediments.

Groboillot A, Portet-Koltalo F, Le Derf F, Feuilloley MJ, Orange N, Poc CD - Int J Mol Sci (2011)

Adsorption isotherms of different PAHs at water/kaolin interface in the presence of SDS (8 × 10−2 mol·L−1) or amphisin (7.2 × 10−4 mol·L−1) and in their absence at 25 °C. (A) phenanthrene; (B) indeno[1,2,3,cd]pyrene.
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC3111634&req=5

f3-ijms-12-01787: Adsorption isotherms of different PAHs at water/kaolin interface in the presence of SDS (8 × 10−2 mol·L−1) or amphisin (7.2 × 10−4 mol·L−1) and in their absence at 25 °C. (A) phenanthrene; (B) indeno[1,2,3,cd]pyrene.
Mentions: Based on previous results, kaolin seems to be the most powerful PAHs adsorbent through sediment components, so amphisin efficiency was first evaluated on kaolin. The mixture of 15 PAHs was used to pollute our model sediment. In this part of the study, for more clarity, we report only phenanthrene, representing low weight PAHs (Figure 3A), and indeno[1,2,3,cd]pyrene, representing heavier PAHs (Figure 3B).

Bottom Line: Pure amphisin from Pseudomonas fluorescens DSS73 displays increased effectiveness in releasing polycyclic aromatic hydrocarbons (PAHs) strongly adsorbed to sediments when compared to a synthetic anionic surfactant.DSS73's growth is weakened by three model PAHs above saturation, but amphisin is still produced.Estuarine water feeding the dredged material disposal site of a Norman harbor (France) allows both P. fluorescens DSS73 growth and amphisin production.

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Cold Microbiology-Signals and Microenvironment, University of Rouen, EA 4312, 55 rue Saint Germain, 27000 Evreux, France; E-Mails: anne.groboillot@univ-rouen.fr (A.G.); marc.feuilloley@univ-rouen.fr (M.J.G.F.); nicole.orange@univ-rouen.fr (N.O.).

ABSTRACT
To decontaminate dredged harbor sediments by bioremediation or electromigration processes, adding biosurfactants could enhance the bioavailability or mobility of contaminants in an aqueous phase. Pure amphisin from Pseudomonas fluorescens DSS73 displays increased effectiveness in releasing polycyclic aromatic hydrocarbons (PAHs) strongly adsorbed to sediments when compared to a synthetic anionic surfactant. Amphisin production by the bacteria in the natural environment was also considered. DSS73's growth is weakened by three model PAHs above saturation, but amphisin is still produced. Estuarine water feeding the dredged material disposal site of a Norman harbor (France) allows both P. fluorescens DSS73 growth and amphisin production.

Show MeSH
Related in: MedlinePlus