Effect of Pb2+, Cd2+, Cu2+ and dissolved organic carbon (DOC) on the distribution and partition of decabromodiphenyl ether (BDE-209) in a water–sediment system

RSC Advances ◽  
2015 ◽  
Vol 5 (127) ◽  
pp. 105259-105265
Author(s):  
Donggao Yin ◽  
Hui Peng ◽  
Hua Yin ◽  
Su Zhou ◽  
Shichang Xiong ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Polybrominated Diphenyl Ethers ◽  
Electronic Waste ◽  
Combined Pollution ◽  
Decabromodiphenyl Ether ◽  
System P ◽  
Diphenyl Ethers ◽  
Bde 209

The combined pollution of polybrominated diphenyl ethers (PBDEs) and heavy metals in electronic waste dismantling areas has received increasing concern in recent years.

The Degradation of Decabromodiphenyl Ether in the Supercritical Fluid

2013 ◽  
Vol 798-799 ◽  
pp. 134-137 ◽  
Author(s):  
Sheng Nai Qi ◽  
Wen Sheng Linghu ◽  
Chun Yan Sun
Keyword(s):  
Polybrominated Diphenyl Ethers ◽  
Reaction System ◽  
Zerovalent Iron ◽  
Decabromodiphenyl Ether ◽  
Reaction Conditions ◽  
Important Concern ◽  
Diphenyl Ethers ◽  
Temperature And Pressure ◽  
Supercritical Reaction ◽  
Bde 209

Currently, environmental contamination by polybrominated diphenyl ethers (PBDEs) in the world is of important concern and requires the effective remediation technologies. The degradation of decabromodiphenyl ether (BDE-209) in the supercritical n-hexane by zerovalent iron was studied in this work. The results showed that BDE-209 can be rapidly reduced into nona-, octa-, hepta-and lower brominated polybrominated diphenyl ethers (PBDEs) under the supercritical reaction conditions. Among n-hexane, methanol, tetrahydrofuran and mixed n-hexane+ tetrahydrofuran solvents, the conversion of BDE-209 in tetrahydrofuran was the highest. BDE-209 conversion increased with increased reaction temperature and pressure. Under the reaction condition: temperature: 523K; pressure: 3.2Mpa; reaction time: 10min; reaction system: 200ml 50mg BDE-209/L n-hexane; atmosphere: N2and catalyst load: 2g/L, the conversion of BDE-209 was as high as 88.9%.

scholarly journals Polybrominated diphenyl ethers (PBDEs) in ambient air samples at the electronic waste (e-waste) reclamation site

2019 ◽  
Vol 1 (1) ◽  
pp. 79-89 ◽  
Author(s):  
Ajit Ghimire ◽  
Albert Leo N. dela Cruz ◽  
Roberto Wong ◽  
Panida Navasumrit ◽  
Stephania Cormier ◽  
...  
Keyword(s):  
Polybrominated Diphenyl Ethers ◽  
Electronic Waste ◽  
Ambient Air ◽  
Air Samples ◽  
Diphenyl Ethers ◽  
Waste Reclamation

scholarly journals Uptake and trophic changes in polybrominated diphenyl ethers in the benthic marine food chain in southwestern British Columbia, Canada

FACETS ◽  
2019 ◽  
Vol 4 (1) ◽  
pp. 20-51
Author(s):  
Brenda Burd ◽  
Chris Lowe ◽  
Carmen Morales-„Caselles ◽  
Marie Noel ◽  
Peter Ross ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Polybrominated Diphenyl Ethers ◽  
Dry Weight ◽  
Trophic Levels ◽  
Marine Food Chain ◽  
Deposit Feeders ◽  
Diphenyl Ethers ◽  
Bottom Fish ◽  
Harbour Sediment ◽  
Marine Food

We examined the physical and geochemical effects of sediment on the uptake of polybrominated diphenyl ethers (PBDEs) into marine sediment feeders and their transfer to higher trophic fauna. Sediment PBDEs increased with % total organic carbon (%TOC), organic carbon (OC) flux and grain size (%fines). Tissue PBDE variance was best explained ( R2 = 0.70) by sediment acid volatile sulfides (AVS), PBDEs, and organic lability and input, with the highest values near wastewater outfalls. Dry weight tissue/sediment PBDEs declined with increasing sediment PBDEs, resulting in tissue dilution (ratio <1) at >10 000 pg/g in harbours. Ratios also decreased with increasing %fines, resulting in regional differences. These patterns imply that high levels of fines and high sediment concentrations make PBDEs less bioavailable. Dry weight PBDEs increased >100× between background deposit feeders and predators (polychaetes, crabs, bottom fish, seal), but lipid normalized PBDEs barely increased (<1.3%), suggesting remarkably high uptake in low-lipid sediment feeders, and that PBDEs don’t accumulate at higher trophic levels, but lipid content does. Filter feeders had lower lipid-normalized PBDEs than deposit feeders, highlighting the importance of food resources in higher trophic fauna for bioaccumulation. The most profound congener change occurred with sediment uptake, with nona/deca-BDEs declining and tetra-hexa-BDEs increasing. Harbour sediment feeders had more deca-BDEs than other samples, suggesting PBDEs mostly pass unmodifed through them. Deca-BDEs persist patchily in all tissues, reflecting variable dependence on sediment/pelagic food.

scholarly journals Hydrophobic Organic Pollutants in Soils and Dusts at Electronic Waste Recycling Sites: Occurrence and Possible Impacts of Polybrominated Diphenyl Ethers

2019 ◽  
Vol 16 (3) ◽  
pp. 360 ◽  
Author(s):  
Chimere Ohajinwa ◽  
Peter Van Bodegom ◽  
Qing Xie ◽  
Jingwen Chen ◽  
Martina Vijver ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Polybrominated Diphenyl Ethers ◽  
Flame Retardants ◽  
Electronic Waste ◽  
Waste Recycling ◽  
Hazardous Substances ◽  
Diphenyl Ethers ◽  
Negative Impacts ◽  
Electronic Waste Recycling ◽  
Hydrophobic Organic Pollutants

Concerns about the adverse consequences of informal electronic waste (e-waste) recycling is increasing, because e-waste contains some hazardous substances such as polybrominated diphenyl ethers (PBDEs) which is used as flame retardants in electronics. There is dearth of information on the concentrations of PBDEs and the pattern of distribution at the various e-waste recycling sites in Nigeria. This study therefore measured the concentrations of 13 PBDE congeners, in top soils (0–10 cm) and in various dust samples from different e-waste recycling sites (burning, dismantling, repair). PBDE concentrations at e-waste sites were compared with the concentrations in samples from corresponding control sites in three study locations in Nigeria (Lagos, Ibadan, and Aba). There were significant differences in the level of PBDEs congeners between each of the e-waste recycling sites and the corresponding control sites. The levels of PBDEs at the e-waste recycling sites exceeded the levels at the controls sites by a factor of 100 s to 1000 s. In general, PBDE concentrations at the e-waste sites decreased with the intensity of the e-waste recycling activities: burning sites > dismantling sites > repair sites > control sites. Our results suggest that the informal e-waste recycling has negative impacts on the enviroment and human health.

Determination of polybrominated diphenyl ethers in soil and sediment from an electronic waste recycling facility

Chemosphere ◽  
2005 ◽  
Vol 60 (6) ◽  
pp. 810-816 ◽  
Author(s):  
Dongli Wang ◽  
Zongwei Cai ◽  
Guibin Jiang ◽  
Anna Leung ◽  
Ming H. Wong ◽  
...  
Keyword(s):  
Polybrominated Diphenyl Ethers ◽  
Electronic Waste ◽  
Waste Recycling ◽  
Diphenyl Ethers ◽  
Electronic Waste Recycling ◽  
Soil And Sediment
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