| Autor: |
da Rocha, Otidene Rossiter Sá, Dantas, Renato F., Bezerra Duarte, Marta M.M., Lima Duarte, Márcia Maria, da Silva, Valdinete Lins |
| Zdroj: |
Desalination & Water Treatment; October 2013, Vol. 51 Issue: 28-30 p5785-5791, 7p |
| Abstrakt: |
The purpose of this study is to investigate the treatment of petroleum-extraction wastewater by means of a photo-Fenton like process using sunlight as irradiation source. According to the experimental results, a reduction of the wastewater UV absorption spectral intensity indicates that polycyclic aromatic hydrocarbons and aromaticity removal of approximately 92.7 and 96.2%, respectively, were obtained after 7 h of sunlight exposure using 485.3 mmol L-1of hydrogen peroxide. For the investigated treatment condition, the H2O2optimum concentration was 485.3 mmol L-1since an increment in H2O2concentration did not promote a significant increment in treatment efficiency. H2O2single oxidation was also important during the photo-Fenton treatment. A moderate level of mineralization was also observed. Finally, photo-Fenton process using sunlight was able to reduce sample acute phytotoxicity by about 50%. |
| Databáze: |
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