Detalhes bibliográficos
| Resumo: | Landfill leachates of the city of Badajoz (in the southwest of Spain) have been treated by wet air oxidation at high temperature (180-270 °C) and pressure (40-70 atm). Typical operating variables such as temperature and oxygen partial pressure have been investigated with no effect of any being found and moderate to low chemical oxygen demand conversions (20-30% depending on initial COD concentration). Initial pH shows a positive influence when acidic conditions are used. Addition of hydrogen peroxide (0.01 M) as a hydroxyl radical promoter is able to provide an additional 15% increase in the final COD removal achieved. If a sulfate radical promoter is used (i.e., Oxone) the process is significantly improved, with COD conversions in the range 60-80%, also depending on the initial COD of the leachates. A first attempt to comprehend the chemistry of this oxidizing system suggests an instantaneous decomposition of Oxone that initiates the radical chain also involving hydroxyl and organic radicals. |
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| Autores principais: | Javier Rivas, F. |
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| Outros Autores: | Beltrán, F.; Alvarez, P.; Carvalho, Fátima |
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| Assunto: | Landfill leachates Badajoz Oxone-promoted Air oxidation Chemical oxygen |
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| Ano: | 2005 |
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| País: | Portugal |
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| Tipo de documento: | artigo |
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| Tipo de acesso: | acesso aberto |
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| Instituição associada: | Instituto Politécnico de Beja |
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| Idioma: | inglês |
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| Origem: | Repositório Institucional do IPBeja |
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