Sourwater treatment by fenton process and its effect on phytotoxicity with Lactuca sativa
| Autor: | Célia Regina Granhen Tavares, Mônica Beatriz Kolicheski, Thiago Atsushi Takashina, Luciana Igarashi-Mafra, Marcos R. Mafra |
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| Rok vydání: | 2019 |
| Předmět: |
inorganic chemicals
General Computer Science Central composite design General Mathematics Batch reactor General Physics and Astronomy petroleum effluent chemistry.chemical_compound experimental design Response surface methodology Phenols bioassays lcsh:Science (General) Effluent total phenols 3.06.03.00-5 General Engineering General Chemistry chemistry lcsh:TA1-2040 Germination General Earth and Planetary Sciences Degradation (geology) Phytotoxicity lcsh:Engineering (General). Civil engineering (General) advanced oxidative process lcsh:Q1-390 Nuclear chemistry |
| Zdroj: | Acta Scientiarum: Technology, Vol 41, Iss 1, Pp e41288-e41288 (2019) Acta Scientiarum. Technology; Vol 41 (2019): Publicação Contínua; e41288 Acta Scientiarum. Technology; v. 41 (2019): Publicação Contínua; e41288 Acta scientiarum. Technology Universidade Estadual de Maringá (UEM) instacron:UEM |
| ISSN: | 1807-8664 1806-2563 |
| DOI: | 10.4025/actascitechnol.v41i1.41288 |
| Popis: | In this work, degradation of stripped sourwater by Fenton´s oxidation process was investigated by a central composite design and response surface methodology. The effects of initial concentrations of H 2 O 2 and Fe 2+ on the total phenols degradation was studied in a batch reactor. The optimum total phenols degradation was 92% achieved within an H 2 O 2 concentration of 4.4 g L -1 and iron concentration of 162 mg L -1 . The mathematical kinetic model adequately represented the experimental results. The results indicated that the Fenton oxidation rate (1/m) and removal efficiency (1/b) were more dependent on iron concentration than H 2 O 2 concentration. After the Fenton process, the sourwater presented a seed germination rate ( L. sativa ) above 80%, indicating reduced phytotoxicity of the treated effluent. It was also observed that the H 2 O 2 concentration significantly affected the inhibition concentration (IC 50 ). |
| Databáze: | OpenAIRE |
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