Aerobic biotransformation of decabromodiphenyl ether (PBDE-209) by Pseudomonas aeruginosa

Shi, Guangyu; Yin, Hua; Ye, Jinshao; Peng, Hui; Li, Jun; Luo, Chunling

doi:10.1016/j.chemosphere.2013.07.044

Cited by 69 publications

(21 citation statements)

References 31 publications

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“…For instance, Payne et al 16 have reported 80% degradation of 8.0 mg kg -1 PCB-contaminated sediment after 12 days of treatment using Burkholderia xenovorans LB400. Similarly, 55% removal of initial 0.99 mg l -1 of decabromodiphenyl ether (DBDE) after 7 days of inoculation of Pseudomonas aeruginosa has been reported by Shi et al 17 . Anaerobic transformation of PCBs and PBDEs using native dissimilatory metal reducing microbes (DMRMs) of the soil in the presence of lactate (electron donor) and Fe(II) have been studied by Song et al 18 .…”

Section: Microbial Remediationsupporting

confidence: 54%

Sustainable Options for Mitigation of Major Toxicants Originating from Electronic Waste

Bhattacharya

Khare

2016

Current Science

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Electronic waste (e-waste) is an emerging source of toxic contaminants in the environment. It is considered to be hazardous as it is known to contain toxic metals, viz. Cr, Ni, Zn, Pb and Hg in huge amounts and organic pollutants, viz. polychlorinated biphenyls, polybrominated diphenyl ethers and tetrabromobisphenol-A. Rapid development and changes in lifestyle have resulted in a huge pile-up of e-waste and its continuous production further makes the situation troublesome. E-waste is usually processed informally for recovery of precious metals. During this process, a large amount of toxic metals, organic compounds and secondary organic pollutants such as polyaromatic hydrocarbons and dioxin enters into the environment. Disposal of raw or processed e-waste in landfills also results in contamination of soil and groundwater through leachate. Considering the present environmental condition along with toxic and persistence nature of pollutants originating from e-waste, their remediation using sustainable methods is highly desirable. This article provides an overview of different bioremediation options used and available for remediation of e-waste-related pollutants. Advantages and limitations of these methods along with their applicability in restoration of contaminated system are also highlighted.

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Section: Microbial Remediationsupporting

confidence: 54%

Sustainable Options for Mitigation of Major Toxicants Originating from Electronic Waste

Bhattacharya

Khare

2016

Current Science

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“…Many bacterial species in this study have been reported to have the ability to biodegrade PBDE congeners when these are present in soil/sediment [23][24][25][26][27][28][29]. Pseudomonas spp., which are members of the Gram-negative γ-Proteobacteria; these are present in the dark BDE-209-contaminated microcosms (6.97% in the Yi-Li sample and 3.33% in the Da-An sample).…”

Section: Bacterial Species Involved In Pbde Biodegradation In the Micmentioning

confidence: 80%

“…Pseudomonas aeruginosa is able to utilize BDE-209 as a sole carbon source and is able to reach its highest degradation efficiency when a ratio of 1:5 BDE-209 and glucose as an extra carbon source are present. The lower brominated products of PBDEs, which include two nona-bromodiphenyl ethers (BDE-208, BDE-207), four octa-bromodiphenyl ethers (BDE-203, BDE-202, and one hepta-bromodiphenyl ethers (BDE-183), were formed during this biodegradation process [25]. A crude enzyme extracted from Pseudomonas aeruginosa was found to contain a mixture of intracellular enzymes and various degradation enzymes that are able to degrade BDE-209 into lower brominated PBDEs and OH-PBDEs; this occurred through debromination and hydroxylation of the aromatic rings [26].…”

Section: Bacterial Species Involved In Pbde Biodegradation In the Micmentioning

confidence: 99%

Variation of Microbial Communities in Aquatic Sediments under Long-Term Exposure to Decabromodiphenyl Ether and UVA Irradiation

Chang

Chou

et al. 2019

Sustainability

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Abiotic components create different types of environmental stress on bacterial communities in aquatic ecosystems. In this study, the long-term exposure to various abiotic factors, namely a high-dose of the toxic chemical decabromodiphenyl ether (BDE-209), continuous UVA irradiation, and different types of sediment, were evaluated in order to assess their influence on the bacterial community. The dominant bacterial community in a single stress situation, i.e., exposure to BDE-209 include members of Comamonadaceae, members of Xanthomonadaceae, a Pseudomonas sp. and a Hydrogenophaga sp. Such bacteria are capable of biodegrading polybrominated diphenyl ethers (PBDEs). When multiple environmental stresses were present, Acidobacteria bacterium and a Terrimonas sp. were predominant, which equipped the population with multiple physiological characteristics that made it capable of both PBDE biodegradation and resistance to UVA irradiation. Methloversatilis sp. and Flavisolibacter sp. were identified as representative genera in this population that were radioresistant. In addition to the above, sediment heterogeneity is also able to alter bacterial community diversity. In total, seventeen species of bacteria were identified in the microcosms containing more clay particles and higher levels of soil organic matter (SOM). This means that these communities are more diverse than in microcosms that contained more sand particles and a lower SOM, which were found to have only twelve identifiable bacterial species. This is the first report to evaluate how changes in bacterial communities in aquatic sediment are affected by the presence of multiple variable environmental factors at the same time.

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“…DecaBDE debrominates photolytically when dissolved in solvent and exposed to ultraviolet light [9,10] or when partitioned to natural matrices and exposed to sunlight [11,12]. DecaBDE can also be broken down by microorganisms under aerobic [13][14][15] and anaerobic [16][17][18] conditions and can be biotransformed into lower-brominated BDE congeners by fish [19,20]. Debromination of decaBDE might be occurring in the aquatic environment (as suggested previously [21][22][23]), but the significance of this phenomenon in nature remains poorly understood.…”

Section: Introductionmentioning

confidence: 98%

Probing the debromination of the flame retardant decabromodiphenyl ether in sediments of a boreal lake

Orihel

Bisbicos

Darling

et al. 2016

Enviro Toxic and Chemistry

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After decades of use of polybrominated diphenyl ethers (PBDEs) as flame retardants, a large reservoir of these toxins has accumulated in ecosystems worldwide. The present study used an innovative approach to examine whether the fully brominated PBDE decabromodiphenyl ether (decaBDE) degrades to more toxic congeners in aquatic environments. The authors incubated intact sediment microcosms with high-purity [(13)C]decaBDE in a remote boreal lake to assess its debromination under ambient conditions. Although the addition of [(13)C]decaBDE increased total PBDE concentrations in sediment more than 10-fold, the relative amount of [(13)C]decaBDE in sediment did not change significantly over a 1-mo incubation. However, observation of small quantities of lower-brominated [(13)C]BDEs lent support to the hypothesis that decaBDE is slowly debrominated. The authors observed a significant increase in octaBDEs and nonaBDEs in profundal, but not littoral, sediment over 30 d. A second experiment in which sediment was incubated under different light and oxygen regimes yielded a surprising result-oxygen significantly stimulated the formation of octaBDEs and nonaBDEs. The authors also conducted a large-scale in situ enclosure experiment in which they followed the fate of experimentally added decaBDE in sediment over 26 mo, but that study yielded little evidence of decaBDE debromination. Overall, the authors suggest that the debromination of decaBDE occurs very slowly, if at all, in natural sediment of boreal lakes, in contrast to the rapid degradation kinetics reported by most laboratory-based studies, which are usually conducted by dissolving decaBDE in organic solvents. The findings reinforce the need for field studies on contaminant fate to inform environmental policy decisions.

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Aerobic biotransformation of decabromodiphenyl ether (PBDE-209) by Pseudomonas aeruginosa

Cited by 69 publications

References 31 publications

Sustainable Options for Mitigation of Major Toxicants Originating from Electronic Waste

Sustainable Options for Mitigation of Major Toxicants Originating from Electronic Waste

Variation of Microbial Communities in Aquatic Sediments under Long-Term Exposure to Decabromodiphenyl Ether and UVA Irradiation

Probing the debromination of the flame retardant decabromodiphenyl ether in sediments of a boreal lake

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