Enhanced biodegradation of polycyclic aromatic hydrocarbons using nonionic surfactants in soil slurry

Kim, In Soo; Park, Jong Sup; Kim, Kyoung-Woong

doi:10.1016/s0883-2927(01)00043-9

Cited by 164 publications

(80 citation statements)

References 10 publications

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“…The addition of a surfactant to a contaminated soil can reduce the interfacial tension thus increasing the mass transfer of the contaminants (Mulligan et al, 2001;Gao et al, 2007;. In this context, several researchers have shown that various surfactants can enhance desorption (Aronstein et al, 1991;MataSandoval et al, 2002;Xu et al, 2006), solubilization (Garon et al, 2002;Prak and Pritchard, 2002;Doong and Lei, 2003), biodegradation of organic compounds (Fava and Di Gioia, 2001;Kim et al, 2001), and removal of heavy metals from soil (Dahrazma and Mulligan, 2007;Rufino et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Biosurfactants are useful tools for the bioremediation of contaminated soil: a review

Bustamante

Duran

Díez

2012

J. Soil Sci. Plant Nutr.

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Bioremediation processes are negatively affected by the low aqueous solubility of some contaminants; therefore their bioavailability may be enhanced by the addition of surfactants. These compounds are organic molecules that can be chemically and biologically produced. Surfactants contain both hydrophilic and hydrophobic groups, therefore reducing surface and interfacial tensions of immiscible fluids and increasing the solubility and sorption of hydrophobic organic and inorganic compounds. This article provides an overview of characteristics of natural and synthetic surfactants and the effects of biosurfactants on solubility, sorption and biodegradation of hydrophobic organic contaminants; as well as the effects of biosurfactants on degrader microorganisms as white-rot fungi. Finally, some examples of application of natural surfactants for bioremediation of contaminated soils are shown. In general, this overview indicates the great potential of biosurfactants on the remediation of contaminated sites.

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Section: Introductionmentioning

confidence: 99%

Biosurfactants are useful tools for the bioremediation of contaminated soil: a review

Bustamante

Duran

Díez

2012

J. Soil Sci. Plant Nutr.

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“…Within soil, black carbon materials such as biochar influence the bioavailability and bioaccessibility of these compounds through sorption and entrapment. This influence can be observed through the rates and extents of sorption, desorption and biodegradation of HOCs in biochar-amended soils, whilst the biochar concentration, production conditions, feedstock and chemical properties are also determining factors [28,65,127]. Despite the presence of co-contaminants, biochar still strongly affected the total and bioavailable fractions of PAHs [126,127].…”

Section: Discussionmentioning

confidence: 99%

“…In so doing, removal of the putatively mobile fraction which consists of the easily extractable and/or bioavailable/bioaccessible HOC fractions diminishes with increasing soil contact time [25][26][27]. Persistence and loss are also governed by the characteristics of the HOC, such as polarity, hydrophobicity, aqueous solubility and molecular structure or size [10,17,27,28]. Increases in contaminant-soil contact time (aging), result in the rate of loss decreasing to produce a hockey stick-shaped decay curve [10,24] (Figure 1).…”

Section: Behaviour Of Organic Contaminants In Soilmentioning

confidence: 99%

Impact of Biochar on Organic Contaminants in Soil: A Tool for Mitigating Risk?

Ogbonnaya

Semple

2013

Agronomy

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Abstract:The presence of biochar in soils through natural processes (forest fires, bush burning) or through application to soil (agriculture, carbon storage, remediation, waste management) has received a significant amount of scientific and regulatory attention. Biochar alters soil properties, encourages microbial activity and enhances sorption of inorganic and organic compounds, but this strongly depends on the feedstock and production process of biochar. This review considers biochar sources, the production process and result of pyrolysis, interactions of biochar with soil, and associated biota. Furthermore, the paper focuses on the interactions between biochar and common anthropogenic organic contaminants, such as polycyclic aromatic hydrocarbons (PAHs), pesticides, and dioxins, which are often deposited in the soil environment. It then considers the feasibility of applying biochar in remediation technologies in addition to other perspective areas yet to be explored.

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“…Since inhibition of Phe degradation was not observed in the TC samples, it could be inferred that the volatilisation and/or degradation of naphthalene may have occurred more rapidly compared to the nutrient amended microcosms, thereby preventing any form of inhibitory action on the degradation of other LMW PAHs. It is also possible that losses recorded for Phe in these un-amended samples may have also occurred by volatilization [30]. In the TBN treatments, the mean concentration of naphthalene after 60 days incubation was, however, significantly (p<0.01) higher than the control and Phe inhibition was also observed.…”

Section: Concentrations Of Pahs (µG/g)mentioning

confidence: 91%

Enhanced Degradation of Benzo[α]Pyrene in Coal Tar Contaminated Soils Using Biodiesel

To¹,

Dm²

2018

J Bioremediat Biodegrad

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The biodegradation of the potent carcinogen, benzo [a]pyrene (BaP), and other priority pollutants was investigated in un-weathered coal tar contaminated soil over a period of 150 days. Results from the laboratory microcosm experiments showed that after 60 days, the concentrations of BaP were significantly reduced by 81%, in the biodiesel amended samples compared to the 26% and 34% depletion in the control and nutrient-only amended microcosms, respectively. The 3-ring PAH anthracene was also almost completely biodegraded in the presence of biodiesel. However, phenanthrene degradation was significantly inhibited in these samples as only 3% reduction occurred as opposed to the 80% depletion observed in the control. A stepwise treatment approach conducted on the coal tar spiked soil also revealed a higher reduction in BaP (98%) in the biodiesel amended microcosms compared to the control (29%) and further enhanced the depletion of phenanthrene by 51% after 60 days of adding biodiesel to soil initially treated with nutrients. Toxicity assays showed that biodiesel amended microcosms stimulated phosphatase enzyme activity and exhibited a lower toxic response to Microtox Vibrio fischeri. Overall, the pattern observed in the removal of the PAHs using biodiesel, suggests the co-metabolic action of ligninolytic fungi, probably via lignin peroxidases, as also evidenced from the visible growth of moulds after 14 days of amendment. The enhanced removal of carcinogenic PAH and the reduced toxicity observed in soil after biodiesel amendment, indicates that this bioremediation technique has potential for full scale field trials.

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Enhanced biodegradation of polycyclic aromatic hydrocarbons using nonionic surfactants in soil slurry

Cited by 164 publications

References 10 publications

Biosurfactants are useful tools for the bioremediation of contaminated soil: a review

Biosurfactants are useful tools for the bioremediation of contaminated soil: a review

Impact of Biochar on Organic Contaminants in Soil: A Tool for Mitigating Risk?

Enhanced Degradation of Benzo[α]Pyrene in Coal Tar Contaminated Soils Using Biodiesel

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