Bioremediation of polycyclic aromatic hydrocarbons: current knowledge and future directions

Bamforth, Selina M.; Singleton, Ian

doi:10.1002/jctb.1276

Cited by 714 publications

(400 citation statements)

References 79 publications

(97 reference statements)

Supporting

Mentioning

367

Contrasting

Unclassified

Order By: Relevance

“…Taking into account the fact that more than 57 % of the SCS isolates belonged to the genus Pseudomonas, and the fact that the Pseudomonas affiliated 72 bp sized T-RF (Table 3) represented *40 % of the relative abundance in sample SCS, we may assume that the pseudomonads are the most active within highly PAH contaminated environments. This finding is in accordance with reports of other studies which also found the dominance of Pseudomonas species in different PAH impacted environments (Ma et al 2006;Bamforth and Singleton 2005;Johnsen et al 2005;Liu et al 2010). The present study provides further evidence for the overwhelming dominance of proteobacterial and actinobacterial isolates within highly PAH contaminated soils.…”

Section: Discussionsupporting

confidence: 93%

Remarkable impact of PAHs and TPHs on the richness and diversity of bacterial species in surface soils exposed to long-term hydrocarbon pollution

Benedek

Vajna

Táncsics

et al. 2013

World J Microbiol Biotechnol

View full text Add to dashboard Cite

Nowadays, because of substantial use of petroleum-derived fuels the number and extension of hydrocarbon polluted terrestrial ecosystems is in growth worldwide. In remediation of aforementioned sites bioremediation still tends to be an innovative, environmentally attractive technology. Although huge amount of information is available concerning the hydrocarbon degradation potential of cultivable hydrocarbonoclastic bacteria little is known about the in situ long-term effects of petroleum derived compounds on the structure of soil microbiota. Therefore, in this study our aim was to determine the longterm impact of total petroleum hydrocarbons (TPHs), volatile petroleum hydrocarbons (VPHs), total alkyl benzenes (TABs) as well as of polycyclic aromatic hydrocarbons (PAHs) on the structure of bacterial communities of four different contaminated soil samples. Our results indicated that a very high amount of TPH affected positively the diversity of hydrocarbonoclastic bacteria. This finding was supported by the occurrence of representatives of the a-, b-, c-Proteobacteria, Actinobacteria, Flavobacteriia and Bacilli classes. High concentration of VPHs and TABs contributed to the predominance of actinobacterial isolates. In PAH impacted samples the concentration of PAHs negatively correlated with the diversity of bacterial species. Heavily PAH polluted soil samples were mainly inhabited by the representatives of the b-, cProteobacteria (overwhelming dominance of Pseudomonas sp.) and Actinobacteria.

show abstract

Section: Discussionsupporting

confidence: 93%

Remarkable impact of PAHs and TPHs on the richness and diversity of bacterial species in surface soils exposed to long-term hydrocarbon pollution

Benedek

Vajna

Táncsics

et al. 2013

World J Microbiol Biotechnol

View full text Add to dashboard Cite

show abstract

“…Microbial remediation is one of the most potential technologies for PAHs abatement [12,13]. However, biosorption of PAHs by microorganisms has been ignored in bioremediation practices.…”

Section: Biosorption and Biodegradation Of Phen And Pyr By Fungi P Cmentioning

confidence: 99%

Biosorption and biodegradation of polycyclic aromatic hydrocarbons by Phanerochaete chrysosporium in aqueous solution

2012

View full text Add to dashboard Cite

Biosorption and biodegradation of phenanthrene and pyrene by live and heat-killed Phanerochaete chrysosporium are investigated to elucidate the bio-dissipation mechanisms of polycyclic aromatic hydrocarbons (PAHs) in aqueous solution and its regulating factors. The effects of nutrient conditions (carbon source and nitrogen source concentrations), the co-existing Cu 2+ , and repeated-batch feed of PAHs on the biosorption and biodegradation are systematically studied. The removal of PAHs by dead bodies of P. chrysosporium is attributed to biosorption only, and the respective partition coefficients of phenanthrene and pyrene are 4040 and 17500 L/kg. Both biosorption and biodegradation contribute to the dissipation of PAHs by live P. chrysosporium in water. After a 3-d incubation, the removal percentage via biosorption are 19.71% and 52.21% for phenanthrene and pyrene, respectively. With the increase of the incubation time (340 d), biodegradation gradually increases from 20.40% to 60.62% for phenanthrene, and from 15.55% to 49.21% for pyrene. Correspondingly, the stored-PAHs in the fungal bodies decrease. Under the carbon-rich and nitrogen-limit nutrient conditions, the removal efficiency and biodegradation of phenanthrene and pyrene are significantly promoted, i.e. 99.55% and 92.77% for phenanthrene, and 99.47% and 83.97% for pyrene after a 60-d incubation. This phenomenon is ascribed to enhanced-biosorption due to the increase of fungal biomass under carbon-rich condition, and to stimulated-biodegradation under nitrogen-limit condition. For the repeated-batch feed of phenanthrene, the pollutant is continuously removed by live P. chrysosporium, and the contribution of biodegradation is enhanced with the repeated cycles. After 3 cycles, the biodegradation percentage is up to 90% with each cycle of a 6-d incubation.biosorption, biodegradation, Phanerochaete chrysosporium, polycyclic aromatic hydrocarbons, bioremediation Citation:Ding J, Chen B L, Zhu L Z. Biosorption and biodegradation of polycyclic aromatic hydrocarbons by Phanerochaete chrysosporium in aqueous solution.

show abstract

“…Their main source in the environment is of anthropogenic origin, namely combustion of fossil fuels such as petroleum and coal containing considerable amounts of PAHs (Wilcke, 2000;Bamforth and Singleton, 2005). There are also natural pyrogenic sources like vegetation fires or volcanic eruptions.…”

Section: Introductionmentioning

confidence: 99%

Polycyclic aromatic hydrocarbons and polychlorinated biphenyls in urban soils from Kathmandu, Nepal

Aichner

Glaser

Zech

2007

Organic Geochemistry

123

View full text Add to dashboard Cite

Kathmandu, the capital of Nepal, faces increasing environmental problems such as heavy air pollution and lack of proper waste management. The aim of this study was to examine if the soils are also affected by pollution, with the focus on polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs). The sum of 20 PAHs in surface soils ranged between 184 and 10279 lg kg À1 . The most abundant PAHs were perylene (14.6%), benzo(b+j+k)flouranthene (10.7%), naphthalene (10.7%) and phenanthrene (9.8%), with perylene concentrations varying strongly. The significantly more positive d 13 C values of perylene in samples with elevated concentrations indicate biological production, possibly by anaerobic degradation of perylene quinones. PAH ratios also indicate the influence of petrogenic PAH sources, especially at petrol stations and some street samples. The sum of 12 PCBs ranged from 356 to 44710 ng kg À1 . The most abundant were congeners 52 (19.4%), 101 (14.3%), 118 (13.4%) and 138 (11.7%). The low PCB concentrations and pattern were interpreted as a diffuse background contamination being the main PCB source in the urban soils. Indications for recent contamination were found in river sediments from the inner city, as well as in industrial and street samples. Classified by land use, the samples taken from the gutter contained the highest PAH and PCB concentrations as a result of accumulation. The lowest values were found in surface soils from Swayambunath (a park) and a garden area. A gradual decrease in concentration with depth was present for both compound classes in the profiles sampled at Swayambunath. No trend was visible in the garden profiles as a result of soil disturbance of the soil by agricultural treatment. Enhanced microbial degradation and volatilization in the warm/humid monsoon climate is probably the main cause for low pollutant concentrations. Increased photodegradation and the short accumulation period might be other important factors. Concerning its state of soil pollution, Kathmandu fits rather well into a global distribution pattern of persistent organic pollutants, with high concentrations in temperate (higher latitude) regions and very low ones in the tropics (lower latitude regions) due to global distillation.

show abstract

Bioremediation of polycyclic aromatic hydrocarbons: current knowledge and future directions

Cited by 714 publications

References 79 publications

Remarkable impact of PAHs and TPHs on the richness and diversity of bacterial species in surface soils exposed to long-term hydrocarbon pollution

Remarkable impact of PAHs and TPHs on the richness and diversity of bacterial species in surface soils exposed to long-term hydrocarbon pollution

Biosorption and biodegradation of polycyclic aromatic hydrocarbons by Phanerochaete chrysosporium in aqueous solution

Polycyclic aromatic hydrocarbons and polychlorinated biphenyls in urban soils from Kathmandu, Nepal

Contact Info

Product

Resources

About