Assessment of polychlorinated dibenzo-p-dioxins and dibenzofurans, PCDD/Fs, in the application of advanced oxidation processes
ABSTRACT: Advanced oxidation Processes (AOPs), based on the formation of very active hydroxyl radicals, have been successfully applied for the treatment of wastewaters containing recalcitrant organic compounds such as chlorophenols. However, sometimes the partial mineralization of organic contaminan...
| Autor: | |
|---|---|
| Formato: | tesis doctoral |
| Fecha de publicación: | 2014 |
| País: | España |
| Recursos: | Universidad de Cantabria (UC) |
| Repositorio: | UCrea Repositorio Abierto de la Universidad de Cantabria |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.unican.es:10902/5367 |
| Acesso em linha: | http://hdl.handle.net/10902/5367 |
| Access Level: | acceso abierto |
| Palavra-chave: | Chlorophenols Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) Advanced oxidation processes (AOPs) Electrochemical oxidation Fenton oxidation Clorofenoles Dibenzo-p-dioxinas y dibenzofuranos policlorados (PCDD/Fs) Procesos de oxidación avanzada Oxidación electroquímica Oxidación Fenton |
| Resumo: | ABSTRACT: Advanced oxidation Processes (AOPs), based on the formation of very active hydroxyl radicals, have been successfully applied for the treatment of wastewaters containing recalcitrant organic compounds such as chlorophenols. However, sometimes the partial mineralization of organic contaminants may lead to the potential formation of reaction by-products more harmful than their parent compounds. In this regard, chlorophenols are amongst the most important and direct precursors of the formation of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), which are a family of unintentionally persistent organic pollutants characterized by their persistence, bioaccumulative behaviour and various degrees of inherent toxicity. In this sense, this thesis aims to assess the distribution of intermediate products, focusing on the potential formation of PCDD/Fs, in the advanced oxidation treatment of aqueous solutions containing chlorinated organic compounds, studying the relevant role of the operating conditions. Concretely two broadly applied AOPs, namely electrochemical oxidation and Fenton oxidation, have been studied. |
|---|