LEPABE - Laboratory for Process, Environmental, Biotechnology and Energy Engineering, Faculty of Engineering, University of Porto, R. Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal.
LEPABE - Laboratory for Process, Environmental, Biotechnology and Energy Engineering, Faculty of Engineering, University of Porto, R. Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal.
Water Res. 2016 Jan 1;88:39-59. doi: 10.1016/j.watres.2015.09.044. Epub 2015 Oct 23.
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.
多溴联苯醚（PBDEs）是溴化阻燃剂，由于其持久性、生物累积潜力和可能的毒性效应，受到了广泛关注。多溴联苯醚已在人类、野生动物和环境中被全球检测到，这凸显了寻找有效去除技术来减轻其在环境中的传播和积累的紧迫性。在所有环境组份中，水引起了特别关注。本文旨在提供有关迄今为止研究的主要降解过程（光解、零价铁和 TiO2 光催化）在水基质中降解 PBDEs 的适用性信息。详细讨论了每种单独过程背后设计系统的最相关标准。比较分析表明，TiO2 的氧化降解是处理受多溴联苯醚污染水的最合适技术，因为可以实现更高的脱溴和矿化程度，防止形成/积累低溴代 PBDE 同系物，并促进芳核的断裂。
