Mycoremediation of PAH-contaminated soil

Bhatt, Manish; Cajthaml, Tomáš; Šašek, V.

doi:10.1007/bf02817647

Cited by 69 publications

(26 citation statements)

References 20 publications

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“…in solid wheat straw substrate, Wolter et al (1997) showed that by week 15 of incubation, the degradation efficiency of BaA was 25%. Generally, lowmolecular weight PAHs possessing two or three aromatic rings, such as Ace are easily degraded, while those with high-molecular weight, such as BaA are significantly more recalcitrant in soils (Kanaly and Harayama 2000;Bhatt et al 2002). However, in the present study, the tested P. ostreatus strain under our experimental conditions degraded BaA to a greater extent than Ace.…”

Section: Resultscontrasting

confidence: 51%

“…The hazards associated with PAHs can be overcome by the use of conventional physicochemical remediation methods; however, these are expensive, and in many cases, transfer the pollutant from one phase to another. Fungal degradation is often characterised as an environmentally friendly and costeffective approach to remove PAHs from soil (Bhatt et al 2002;Gao et al 2010). A number of species of ligninolytic fungi, such as Pleurotus ostreatus , are known to degrade PAHs and the biodegradation rates correlate with the production of ligninolytic enzymes (Bamforth and Singleton 2005;Johnsen et al 2005).…”

Section: Introductionmentioning

confidence: 99%

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Influence of mixtures of acenaphthylene and benzo[a]anthracene on their degradation by Pleurotus ostreatus in sandy soil

et al. 2013

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Purpose Polycyclic aromatic hydrocarbons (PAHs) are a class of organic compounds commonly found as soil contaminants. Fungal degradation is considered as an environmentally friendly and cost-effective approach to remove PAHs from soil. Acenaphthylene (Ace) and Benzo[a]anthracene (BaA) are two PAHs that can coexist in soils; however, the influence of the presence of each other on their biodegradation has not been studied. The biodegradation of Ace and BaA, alone and in mixtures, by the white rot fungus Pleurotus ostreatus was studied in a sandy soil. Materials and methods Experimental microcosms containing soil spiked with different concentrations of Ace and BaA were inoculated with P. ostreatus. Initial (t 0 ) and final (after 15 days of incubation) soil concentrations of Ace and BaA were determined after extraction of the PAHs.Results and discussion P. ostreatus was able to degrade 57.7% of the Ace in soil spiked at 30 mg kg −1 dry soil and 65.8% of Ace in soil spiked at 60 mg kg −1 dry soil. The degradation efficiency of BaA by P. ostreatus was 86.7 and 77.4% in soil spiked with Ace at 30 and 60 mg kg −1 dry soil, respectively. After 15 days of incubation, there were no significant differences in Ace concentration between soil spiked with Ace and soil spiked with Ace + BaA, irrespective of the initial soil concentration of both PAHs. There were also no differences in BaA concentration between soil spiked with BaA and soil spiked with BaA + Ace. Conclusions The results indicate that the fungal degradation of Ace and BaA was not influenced by the presence of each other's PAH in sandy soil. Bioremediation of soils contaminated with Ace and BaA using P. ostreatus is a promising approach to eliminate these PAHs from the environment.

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Section: Resultscontrasting

confidence: 51%

Section: Introductionmentioning

confidence: 99%

Influence of mixtures of acenaphthylene and benzo[a]anthracene on their degradation by Pleurotus ostreatus in sandy soil

et al. 2013

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“…One of the possible alternatives for the degradation of this type of compounds is the use of white rot fungi YESILADA 2004, YESILADA et al 2003). These fungi can remove a wide variety of structurally diverse pollutants (BHATT et al 2002, KAHRAMAN et al 2005, ASMA and YESILADA 2000, UNYAYAR and MAZMANCI 2005 , SANI et al 1998, AKSU and TEZER 2000, ZILLY et al 2002.…”

mentioning

confidence: 99%

Adsorptive removal of textile dyes from aqueous solutions by dead fungal biomass

Asma

Kahraman

Cing

et al. 2006

J. Basic Microbiol.

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Dead fungal biomass prepared from Phanerochaete chrysosporium and Funalia trogii was tested for their efficiency in removal of textile dyes. The effects of contact time, initial dye concentration, amount of dead biomass and agitation rate on dye removal have been determined. Removal of all dyes required a very short time (60 min). Experimental results show that, P. chrysosporium was more effective than F. trogii . An increase in the amount of dead biomass positively affected of the dye removal. The removal efficiency of different amount of biomass was in order 1 g > 0.5 g > 0.2 g > 0.1 g. The highest removal was obtained at 150-200 rpm. Slightly lower removing activities were found at lower agitation rates. This study showed that it was possible to remove textile dyes by dead biomass of P. chrysosporium .

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“…Generally, several studies in literature have specified clean-up techniques for PAH contaminated sites using bacterial cultures, pure strains, or strains in association (Boochan et al, 2000;Bhatt, 2002;Reardon et al, 2002;Janikowski et al, 2004;Xu and Obbard, 2004;de Lucas et al, 2005). The few available reports on the modeling of PAH degradation (Tabak and Govind, 1997;Rogers and Reardon, 2000) have however, been unable to perform optimally relative to availability, mobility, toxicity, and concentration of PAHs in the soil system ranging from surface soils to deep aquifers.…”

Section: Introductionmentioning

confidence: 96%

Degradation of polycyclic aromatic hydrocarbons: Model simulation for bioavailability and biodegradation

2010

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A mathematical model for a one-dimensional convective-dispersive solute transport in a soil matrix is presented. The interplay of linear equilibrium sorption and first order degradation were incorporated into the formulation of the model. The model took into consideration the overall effects of the solid and liquid phase mass transfer resistances. Data from experiments were analysed using the temporal moments method (MOM) and CXTFIT curve-fitting technique. The functional parameters; dispersion coefficient, first order degradation rate constant and the retardation factor were estimated using both first and second normalised moments. The solution to the model equations was achieved by the use of the backward finite difference scheme. Results obtained showed that naphthalene was more selectively degraded than pyrene and anthracene with a residual concentration of naphthalene 1.12E − 5 mg/L, 1.48 mg/L; pyrene 3.11E − 4 mg/L, 1.58 mg/L; and anthracene 7.67E − 4 mg/L, 1.61 mg/L in the axial and radial directions, respectively. Concisely, the modeling results showed the occlusion of these compounds within the fissures and cavities of the soil particles, which renders them not readily bioavailable and thus inaccessible to microbial degradation.Un modèle mathématique pour le transport soluté convectif-dispersif unidimensionnel dans une matrice de solàété présenté. L'action réciproque de la sorption d'équilibre linéaire et la dégradation de premier ordre aété incorporée dans la formulation du modèle. Le modèle prenait en ligne de compte les effets d'ensemble des résistances de transfert de masse des phases liquide et solide. Les données de ces expériences ontété analyséesà l'aide de la méthode temporelle des moments et de la technique CXTFT Les paramètres fonctionnels, le coefficient de dispersion, la constante du taux de dégradation de premier ordre et le facteur de ralentissement ontété estimés faisant appelà la fois aux premier et second moments normalisés. La solution auxéquations du modèle aété obtenueà l'aide du schème de différence finie rétrograde. Les résultats obtenus montraient que le naphtalèneétait plus sélectivement dégradé que le pyrène et l'anthracène où la concentration résiduelle de naphtalèneétait de 1,12E − 5 mg/l, 1,48 mg/l, du pyrène de 3,11E − 4 mg/l, 1,58 mg/l et de l'anthracène de 7,67E − 4 mg/l, 1,61 mg/l en directions axiale et radiale respectivement. En bref, les résultats de modélisation montraient que l'occlusion de ces composés dans les fissures et cavités de particules du sol les rendait moins biodisponibles et ainsi inaccessiblesà la dégradation microbienne.

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Mycoremediation of PAH-contaminated soil

Cited by 69 publications

References 20 publications

Influence of mixtures of acenaphthylene and benzo[a]anthracene on their degradation by Pleurotus ostreatus in sandy soil

Influence of mixtures of acenaphthylene and benzo[a]anthracene on their degradation by Pleurotus ostreatus in sandy soil

Adsorptive removal of textile dyes from aqueous solutions by dead fungal biomass

Degradation of polycyclic aromatic hydrocarbons: Model simulation for bioavailability and biodegradation

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