The use of nanovermiculite catalyst in the study of removal of the organic load and degradation of atrazine via ozone process in RPB reactor
| Autor: | Daiana de Morais, Arthur M. S. da Cruz, Fabiano Luiz Naves, Diego Henriques Aguiar de Melo, Eduardo Prado Baston, Gabriel N. de O. Teixeira, Gisella Rossana Lamas Samanamud, Luzia Lima Rezende Naves, Alexandre Boscaro França |
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| Rok vydání: | 2019 |
| Předmět: |
Ozone
Iron 0211 other engineering and technologies 02 engineering and technology 010501 environmental sciences Vermiculite Heterogeneous catalysis 01 natural sciences Catalysis chemistry.chemical_compound Atrazine Pesticides 0105 earth and related environmental sciences Biological Oxygen Demand Analysis Packed bed 021110 strategic defence & security studies Equipment Design General Medicine Hydrogen-Ion Concentration Pollution Nanostructures chemistry Chemical engineering Degradation (geology) Aluminum Silicates Environmental Pollutants Hydroxyl radical Food Science |
| Zdroj: | Journal of Environmental Science and Health, Part B. 55:19-29 |
| ISSN: | 1532-4109 0360-1234 |
| DOI: | 10.1080/03601234.2019.1661199 |
| Popis: | The main objective of this study is the degradation of a synthetic solution of atrazine by a modified vermiculite catalyzed ozonation, in a rotating packed bed (RPB) reactor. A 0.5 L RPB reactor was used to perform the experiments, using a Central Composite Design (CCD) response surface to construct the quadratic model based on the factors: pH, catalyst concentration and reactor rotation frequency. The response variable was the removal of the organic load measured in terms of Chemical Oxygen Demand (COD). After the complete quadratic model was constructed through the response surface, the COD degradation process had an optimal removal of 41% under the following conditions: pH 8.0, rotation of 1150 rpm and catalyst concentration 0.66 g L |
| Databáze: | OpenAIRE |
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