Effect of micellar solubilization on biodegradation rates of hydrocarbons

Bury, Scott J.; Miller, Clarence A.

doi:10.1021/es00038a010

Cited by 134 publications

(78 citation statements)

References 19 publications

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“…SDS has also been use in a pilot scale surfactant washing technology (Clarke et al, 1992). In the perspective of biological treatment, some recent studies have focused on the effects of surfactants on the biodégradation of contaminants like PAHs (Bury & Miller, 1993;Laha & Luthy, 1991. A study conducted by Tiehm (1994) showed that SDS increased the water solubility of a crystalline PAH (phenanthrene) but also inhibited its biodégradation by a mixed culture adapted to the PAH.…”

Section: Introductionmentioning

confidence: 99%

The effect of an anionic surfactant on the mobilization and biodegradation of PAHs in a creosote-contaminated soil

Deschênes

Lafrance

Villeneuve

et al. 1995

Hydrological Sciences Journal

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The mobilization and biodégradation of 13 PAHs sorbed in a creosote-contaminated soil were assessed in the presence of sodium dodecyl sulphate (SDS). In a mobilization experiment, the soil was mixed with SDS solutions (0.005 to 1 % w/v) and the PAH concentrations in the aqueous phase were determined. In a biodégradation experiment, soil residual PAH concentrations were monitored during 45 weeks in the presence of 10, 100 and 500 mg kg" 1 SDS. The SDS was effective in mobilizing three-and four-ring PAHs. Increasing SDS concentration resulted in the mobilization of very low water-soluble five-and six-ring PAHs. The SDS (100 and~ 500 mg kg 4 ) significantly decreased the biodégradation of fluorene, phenanthrene and all of the four-ring PAHs. PAHs with more than four rings were not biodegraded. The surfactant [a 14 C]SDS was readily biodegraded. Even if SDS may be efficient in mobilizing PAHs in soil pore water or groundwater, it will not improve PAH biodégradation. Such a result must be considered when using anionic surfactants in the perspective of biological treatment of PAHs. Effet d'un agent tensio-actif anionique sur la mobilisation et la biodégradation de HAP présents dans un sol contaminé par la créosoteRésumé La mobilisation et la biodégradation de 13 HAP adsorbés sur un sol contaminé par la créosote ont été étudiées en présence de dodecyl sulphate de sodium (DSS). Pour la mobilisation, le sol a été mélangé avec des solutions de DSS (0.005 à 1 % p/v) et la concentration des HAP a été mesurée en phase aqueuse. Pour la biodégradation, les concentrations résiduelles de HAP dans le sol ont été mesurées durant 45 semaines en présence de 10,

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Section: Introductionmentioning

confidence: 99%

The effect of an anionic surfactant on the mobilization and biodegradation of PAHs in a creosote-contaminated soil

Deschênes

Lafrance

Villeneuve

et al. 1995

Hydrological Sciences Journal

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“…While some research groups have found that the presence of surfactants enhances biodegradation of various pollutants including PAHs [66,[72][73][74][75][76][77][78], others have found that the presence of surfactants can actually inhibit biodegradation [75,76,[79][80][81]. For example, Tween-80 was found to inhibit the rate of fl uoranthene mineralization by two strains of Mycobacterium [68].…”

Section: Limiting Factors and Strategiesmentioning

confidence: 99%

Bacterial metabolism of polycyclic aromatic hydrocarbons: strategies for bioremediation

et al. 2008

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Polycyclic aromatic hydrocarbons (PAHs) are compounds of intense public concern due to their persistence in the environment and potentially deleterious effects on human, environmental and ecological health. The clean up of such contaminants using invasive technologies has proven to be expensive and more importantly often damaging to the natural resource properties of the soil, sediment or aquifer. Bioremediation, which exploits the metabolic potential of microbes for the clean-up of recalcitrant xenobiotic compounds, has come up as a promising alternative. Several approaches such as improvement in PAH solubilization and entry into the cell, pathway and enzyme engineering and control of enzyme expression etc. are in development but far from complete. Successful application of the microorganisms for the bioremediation of PAH-contaminated sites therefore requires a deeper understanding of the physiology, biochemistry and molecular genetics of potential catabolic pathways. In this review, we briefl y summarize important strategies adopted for PAH bioremediation and discuss the potential for their improvement.

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“…The uptake of micellar n-decane and n-tetradecane was stimulated by a biodegradable synthetic surfactant resulting in higher growth rates. This was probably caused by direct uptake of the hydrocarbons along with the micelles [5]. The synthetic surfactant at low concentrations may be useful for bioremediation of sites contaminated with hydrophobic pollutants [6].…”

Section: Introductionmentioning

confidence: 99%

Effect of Tween 80 and Moisture Regimes on Endosulfan Degradation by Pseudomonas Aeruginosa

Jayashree¹

2009

Appl Ecol Env Res

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Abstract.The problem of endosulfan bioremediation is poor solubility and restriction of appropriate biocatalyst. One promising approach in increasing the bioavailability of this organic compound is addition of surfactants. The synthetic surfactant Tween 80 was non-toxic to soil microorganisms and inert to the soil matrix and had the additional benefit of causing an enhanced dissolution rate for single compounds. The degradation of alpha and beta endosulfan by Pseudomonas aeruginosa with Tween 80 and different moisture regimes (flooded and non-flooded conditions) was studied. The rate of degradation was maximum (92 %) in non-flooded and Tween 80 added soil; the bacterial count was also maximum. The addition of synthetic surfactant Tween 80 enhanced the solubility and degradation of endosulfan. The degradation of both the isomers were observed and accompanied with formation of endodiol and endosulfan sulfate.

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Effect of micellar solubilization on biodegradation rates of hydrocarbons

Cited by 134 publications

References 19 publications

The effect of an anionic surfactant on the mobilization and biodegradation of PAHs in a creosote-contaminated soil

The effect of an anionic surfactant on the mobilization and biodegradation of PAHs in a creosote-contaminated soil

Bacterial metabolism of polycyclic aromatic hydrocarbons: strategies for bioremediation

Effect of Tween 80 and Moisture Regimes on Endosulfan Degradation by Pseudomonas Aeruginosa

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