scholarly journals Kinetics and pathways for the debromination of polybrominated diphenyl ethers by bimetallic and nanoscale zerovalent iron: Effects of particle properties and catalyst

Chemosphere ◽  
2012 ◽  
Vol 89 (4) ◽  
pp. 426-432 ◽  
Author(s):  
Yuan Zhuang ◽  
Luting Jin ◽  
Richard G. Luthy
Keyword(s):  
Polybrominated Diphenyl Ethers ◽  
Zerovalent Iron ◽  
Particle Properties ◽  
Nanoscale Zerovalent Iron ◽  
Diphenyl Ethers

scholarly journals Dehalogenation of Polybrominated Diphenyl Ethers and Polychlorinated Biphenyl by Bimetallic, Impregnated, and Nanoscale Zerovalent Iron

2011 ◽  
Vol 45 (11) ◽  
pp. 4896-4903 ◽  
Author(s):  
Yuan Zhuang ◽  
Sungwoo Ahn ◽  
Angelia L. Seyfferth ◽  
Yoko Masue-Slowey ◽  
Scott Fendorf ◽  
...  
Keyword(s):  
Polybrominated Diphenyl Ethers ◽  
Polychlorinated Biphenyl ◽  
Zerovalent Iron ◽  
Nanoscale Zerovalent Iron ◽  
Diphenyl Ethers

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%.

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