Effect of a bacterial consortium on the degradation of polycyclic aromatic hydrocarbons and bacterial community composition in Chinese soils

2017 ◽  
Vol 123 ◽  
pp. 56-62 ◽  
Author(s):  
Guang Guo ◽  
Fang Tian ◽  
Keqiang Ding ◽  
Lihong Wang ◽  
Tingfeng Liu ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Bacterial Community ◽  
Community Composition ◽  
Aromatic Hydrocarbons ◽  
Bacterial Community Composition ◽  
Bacterial Consortium ◽  
Polycyclic Aromatic

scholarly journals Biofilm and Planktonic Bacterial and Fungal Communities Transforming High-Molecular-Weight Polycyclic Aromatic Hydrocarbons

2016 ◽  
Vol 82 (8) ◽  
pp. 2288-2299 ◽  
Author(s):  
Benjamin D. Folwell ◽  
Terry J. McGenity ◽  
Corinne Whitby
Keyword(s):  
Molecular Weight ◽  
Polycyclic Aromatic Hydrocarbons ◽  
High Molecular Weight ◽  
Community Composition ◽  
Aromatic Hydrocarbons ◽  
Fungal Community ◽  
Bacterial Species ◽  
Bacterial Community Composition ◽  
Content Type ◽  
Polycyclic Aromatic

ABSTRACTHigh-molecular-weight polycyclic aromatic hydrocarbons (HMW-PAHs) are natural components of fossil fuels that are carcinogenic and persistent in the environment, particularly in oil sands process-affected water (OSPW). Their hydrophobicity and tendency to adsorb to organic matter result in low bioavailability and high recalcitrance to degradation. Despite the importance of microbes for environmental remediation, little is known about those involved in HMW-PAH transformations. Here, we investigated the transformation of HMW-PAHs using samples of OSPW and compared the bacterial and fungal community compositions attached to hydrophobic filters and in suspension. It was anticipated that the hydrophobic filters with sorbed HMW-PAHs would select for microbes that specialize in adhesion. Over 33 days, more pyrene was removed (75% ± 11.7%) than the five-ring PAHs benzo[a]pyrene (44% ± 13.6%) and benzo[b]fluoranthene (41% ± 12.6%). For both bacteria and fungi, the addition of PAHs led to a shift in community composition, but thereafter the major factor determining the fungal community composition was whether it was in the planktonic phase or attached to filters. In contrast, the major determinant of the bacterial community composition was the nature of the PAH serving as the carbon source. The main bacteria enriched by HMW-PAHs werePseudomonas,Bacillus, andMicrobacteriumspecies. This report demonstrates that OSPW harbors microbial communities with the capacity to transform HMW-PAHs. Furthermore, the provision of suitable surfaces that encourage PAH sorption and microbial adhesion select for different fungal and bacterial species with the potential for HMW-PAH degradation.

Degradation of polycyclic aromatic hydrocarbons (pyrene and fluoranthene) by bacterial consortium isolated from contaminated road side soil and soil termite fungal comb

2015 ◽  
Vol 74 (6) ◽  
pp. 5383-5391 ◽  
Author(s):  
Nur-Aainaa-Syafini Mohd Radzi ◽  
Kheng-Soo Tay ◽  
Nor-Kartini Abu Bakar ◽  
Chijioke Uche Emenike ◽  
Shamini Krishnan ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Bacterial Consortium ◽  
Polycyclic Aromatic

Enhancement of polycyclic aromatic hydrocarbons removal during anaerobic treatment of urban sludge

2003 ◽  
Vol 48 (4) ◽  
pp. 53-60 ◽  
Author(s):  
E. Trably ◽  
D. Patureau ◽  
J.P. Delgenes
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Sewage Sludge ◽  
Aromatic Hydrocarbons ◽  
Agricultural Soils ◽  
Biogas Production ◽  
Bacterial Consortium ◽  
Anaerobic Treatment ◽  
Biological Degradation ◽  
Low Concentrations ◽  
Polycyclic Aromatic

Anaerobically stabilized sewage sludge has potential to partially substitute synthetic fertilizers. The main risk with the recycling of urban sludge on agricultural soils is the accumulation of unwanted products, such as trace metals and organic micropollutants. In this context, the polycyclic aromatic hydrocarbons (PAHs) are particularly monitored because of their toxic properties at low concentrations and their high resistance to biological degradation. The aim of the present study was to optimize PAHs removal during anaerobic digestion of contaminated sewage sludge. Thirteen PAHs were monitored in laboratory-scale anaerobic bioreactors under mesophilic (35°C) and thermophilic (55°C) methanogenic conditions. Abiotic losses were statistically significant for the lightest PAHs, such as fluorene, phenanthrene and anthracene. It was shown that PAH removal was due to a specific biological activity. Biological PAHs removal was significantly enhanced by an increase of the temperature from 35°C to 55°C, especially for the heaviest PAHs. Bioaugmentation experiment was also performed by addition of a PAH-adapted bacterial consortium to a non-acclimated reactor. Significant enhancement of PAHs removal was observed. It was finally shown that PAH removal efficiencies and methanogenic performances were closely linked. The rate of biogas production may be used as an indicator of bacterial activity on PAH removal.

Bacterial community structure in soils contaminated by polycyclic aromatic hydrocarbons

Chemosphere ◽  
2007 ◽  
Vol 68 (8) ◽  
pp. 1535-1541 ◽  
Author(s):  
Lorraine Muckian ◽  
Russell Grant ◽  
Evelyn Doyle ◽  
Nicholas Clipson
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Community Structure ◽  
Bacterial Community ◽  
Aromatic Hydrocarbons ◽  
Bacterial Community Structure ◽  
Polycyclic Aromatic
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