Predicting reductive debromination of polybrominated diphenyl ethers by nanoscale zerovalent iron and its implications for environmental risk assessment

Kim, Eunju; Kim, Jaehwan; Kim, Ji-Hun; Bokare, Varima; Chang, Yoon Seok

doi:10.1016/j.scitotenv.2013.07.038

Cited by 16 publications

(5 citation statements)

References 35 publications

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“…Their results indicated that DBDE undergoes photodegradation by reductive debromination and that brominated dibenzofurans (PBDFs) represent the major products from photolysis. Recently, some reports were published on photolysis of DBDE in toluene and adsorbed on silica gel, sand, soil and sediments that showed similar results of photolytic debromination [22][23][24][25][26][27]. These groups found that the photochemical reaction rate decreased with decreasing bromination degree and that it might also be affected by the positions of the substituted Br-atoms.…”

Section: Introductionmentioning

confidence: 91%

Photodegradation of Decabromo Diphenyl Ether Flame Retardant in Poly (Acrylonitrile Butadiene Styrene) (ABS)

Aldoori

Bouberka

Nadim

et al. 2020

Journal of Macromolecular Science, Part B

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Decabromodiphenylether (DBDE) is a brominated flame retardant which belongs to the group of polybromodiphenylethers (PBDEs) often used as a fire resistant additive in various well known polymeric systems like polystyrene, poly(acrylonitrile-butadiene-styrene) (ABS), polypropylene, etc. This compound can be considered as a persistent organic pollutant and presents certain risks for the environment owing to the fact that it is bioaccumulable and not biodegradable. A detailed investigation, described here, was carried out on the effect of ultraviolet/visible radiation on DBDE in ABS with the aim to study the photolytic reactions of this molecule in the solid state, in order to improve the economic and ecological treatment of brominated plastic waste from waste electrical and electronic equipment (WEEE). This study presents new aspects of the photochemical degradation of DBDE/ABS systems in the solid state. The photodegradation of DBDE in ABS was followed by Fourier transform infrared spectroscopy (FTIR) as well as by thermogravimetrical analysis (TGA). Good agreement was obtained for the results of both analytical methods in terms of the overall photolysis of DBDE.

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Section: Introductionmentioning

confidence: 91%

Photodegradation of Decabromo Diphenyl Ether Flame Retardant in Poly (Acrylonitrile Butadiene Styrene) (ABS)

Aldoori

Bouberka

Nadim

et al. 2020

Journal of Macromolecular Science, Part B

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“…The Fe/Pd bimetallic nanoparticles (nZVI/Pd) were synthesized using the sodium borohydride (NaBH 4 ) reduction method [15,16]. FeSO 4 $7H 2 O was dissolved into a 30:70 methanol/deionized water (v/v) solution, and NaOH solution was added to the dissolved iron solution to yield a pH of 6.1.…”

Section: Preparation Of Fe/pd Bimetallic Nanoparticlesmentioning

confidence: 99%

“…Nanoscale zero-valent iron (nZVI) has been used as an effective reductant for treating many halogenated organic compounds including TCE, PCBs, and PBDEs [11][12][13][14][15]. However, nZVI alone was not effective for removing PBDEs [10].…”

Section: Introductionmentioning

confidence: 99%

Removing polybrominated diphenyl ethers in pure water using Fe/Pd bimetallic nanoparticles

Zhang

Lü

et al. 2015

Front. Environ. Sci. Eng.

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Polybrominated diphenyl ethers (PBDEs) have been widely used as fire-retardants. Due to their high production volume, widespread usage, and environmental persistence, PBDEs have become ubiquitous contaminants in various environments.Nanoscale zero-valent iron (ZVI) is an effective reductant for many halogenated organic compounds. To enhance the degradation efficiency, ZVI/ Palladium bimetallic nanoparticles (nZVI/Pd) were synthesized in this study to degrade decabromodiphenyl ether (BDE209) in water. Approximately 90% of BDE209 was rapidly removed by nZVI/Pd within 80 min, whereas about 25% of BDE209 was removed by nZVI. Degradation of BDE209 by nZVI/Pd fits pseudo-first-order kinetics. An increase in pH led to sharply decrease the rate of BDE209 degradation. The degradation rate constant in the treatment with initial pH at 9.0 was more than 6.8 Â higher than that under pH 5.0. The degradation intermediates of BDE209 by nZVI/Pd were identified and the degradation pathways were hypothesized. Results from this study suggest that nZVI/Pd may be an effective tool for treating polybrominated diphenyl ethers (PBDEs) in water.

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Section: Introductionmentioning

confidence: 99%

“…A significant physiological characteristic of PBDEs is that the lower the degree of bromination, the higher the risk of dioxin formation in combustion and more effective bioaccumulation in human and wildlife. 10 Low-brominated diphenyl ethers, whose species average 1–4 bromine atoms per molecule, have been known to affect hormone levels in the thyroid gland, which means that they have higher toxicity to the human nervous system and metabolic system. 11 4-Bromodiphenyl ether (BDE-3) and 4,4′-dibrominated diphenyl ether (BDE-15) are regarded as ideal research objects for low-brominated diphenyl ethers, for they are the final product of many degradation reactions.…”

Section: Introductionmentioning

confidence: 99%

Detecting low-brominated diphenyl ethers by highly sensitive biosensors based on the blocking effect on glucose oxidase

et al. 2023

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Predicting reductive debromination of polybrominated diphenyl ethers by nanoscale zerovalent iron and its implications for environmental risk assessment

Cited by 16 publications

References 35 publications

Photodegradation of Decabromo Diphenyl Ether Flame Retardant in Poly (Acrylonitrile Butadiene Styrene) (ABS)

Photodegradation of Decabromo Diphenyl Ether Flame Retardant in Poly (Acrylonitrile Butadiene Styrene) (ABS)

Removing polybrominated diphenyl ethers in pure water using Fe/Pd bimetallic nanoparticles

Detecting low-brominated diphenyl ethers by highly sensitive biosensors based on the blocking effect on glucose oxidase

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