Journal
WATER RESEARCH
Volume 88, Issue -, Pages 39-59Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.watres.2015.09.044
Keywords
Polybrominated diphenyl ethers; Photolysis; Zerovalent iron; Photocatalysis; Degradation mechanisms
Funding
- Portuguese Foundation for Science and Technology (FCT) [SFRH/BPD/104039/2014]
- FEDER funds through the Operational Programme for Competitiveness Factors - COMPETE, ON.2 - O Novo Norte - North Portugal Regional Operational Programme
- National Funds through FCT - Foundation for Science and Technology [UID/EQU/00511/2013-LEPABE, NORTE-07-0124-FEDER-000025 - RL2_ EnvironmentHealth]
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Polybrominated diphenyl ethers (PBDEs) are brominated flame retardants which have received a great deal of attention due to their persistence, potential to bioaccumulate and possible toxic effects. PBDEs have been globally detected in humans, wildlife and environment, highlighting the urgency of looking for effective removal technologies to mitigate their spread and accumulation in the environment. Among all environmental compartments, the water has raised particular attention. This paper aims to provide information about the suitability of the main degradation processes investigated to date (photolysis, zerovalent iron and TiO2 photocatalysis) for the degradation of PBDEs in water matrices. The most relevant criteria behind the design of a system for such purpose are discussed in detail for each individual process. The comparative analysis suggests that the oxidative degradation by TiO2 is the most appropriated technology to treat waters contaminated with PBDEs because higher debromination and mineralization degrees are achieved, preventing the formation/accumulation of lower brominated PBDE congeners and promoting the cracking of aromatic cores. (C) 2015 Elsevier Ltd. All rights reserved.
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