Fenton coagulation/oxidation using Fe2+ and Fe3+ íons and peracetic acid for the treatment of wastewater
| Autor: | Jeanette Beber de Souza, Sandro Xavier de Campos, Grasiele Soares Cavallini, Carlos Magno de Sousa Vidal |
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| Rok vydání: | 2015 |
| Předmět: |
Chemistry
business.industry Science Materials Science (miscellaneous) General Chemical Engineering Phosphorus Inorganic chemistry Sewage chemistry.chemical_element General Chemistry chemistry.chemical_compound Wastewater Peracetic acid fenton coagulation/oxidation Coagulation (water treatment) removing particulate matter Turbidity peracetic acids business Hydrogen peroxide disinfection QD1-999 Effluent |
| Zdroj: | Orbital: The Electronic Journal of Chemistry, Vol 7, Iss 3, Pp 253-263 (2015) |
| ISSN: | 1984-6428 |
| DOI: | 10.17807/orbital.v7i3.626 |
| Popis: | The Fenton coagulation/oxidation process is divided into two steps: coagulation, in alkaline pH and oxidation, in acid pH. This configuration provides a reduction in oxidant concentration, due to the pretreatment conducted in the coagulation step. This study proposes the substitution of hydrogen peroxide (HP) by peracetic acid (PAA) in a Fenton coagulation process to treat sanitary sewage and provide its disinfection. The new combination is proposed in a single step and presented good results in removing turbidity (98.5%), apparent color (95.4%), phosphorus (100%) and COD (58.2%) even at the effluent natural pH, besides demonstrating higher reduction in E. coli when compared with the process that employs hydrogen peroxide. The formation of Fe3+ ions was shown to be responsible for the removal of the particulate material. DOI: http://dx.doi.org/10.17807/orbital.v7i3.626 |
| Databáze: | OpenAIRE |
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