Strategy for Treating a Landfill Leachate by Integration of Physico-Chemical and Photo-Fenton Processes
| Autor: | Arlene B. S. Nossol, Valdislaine M. Silva, Jader O. Silva, Oswaldo Gomes Júnior, Antonio E.H. Machado, Alam G. Trovó, Raquel M. F. Sousa |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0211 other engineering and technologies
02 engineering and technology 010501 environmental sciences 01 natural sciences law.invention chemistry.chemical_compound Nitrate law Dissolved organic carbon mineralization Leachate Turbidity Effluent Filtration 0105 earth and related environmental sciences 021110 strategic defence & security studies General Chemistry Mineralization (soil science) Human decontamination decontamination Pulp and paper industry chemistry integration of processes modified photo-Fenton iron-complex GC-FID |
| Zdroj: | Journal of the Brazilian Chemical Society v.28 n.9 2017 Journal of the Brazilian Chemical Society Sociedade Brasileira de Química (SBQ) instacron:SBQ Journal of the Brazilian Chemical Society, Volume: 28, Issue: 9, Pages: 1682-1690, Published: SEP 2017 |
| Popis: | This study reports a protocol for the treatment of a sanitary landfill leachate through integration between a stage of coagulation-flocculation, a step of filtration of the resulting suspension, and application of the photo-Fenton process using a ferrioxalate complex and solar irradiation. The best results for turbidity removal by coagulation-flocculation were reached using Al3+ as nitrate salt mainly using concentrations up close 4.4 mmol L-1, at the natural pH of the effluent (pH 7.9), when the removal of 66% of the turbidity was achieved. By using a ferrioxalate complex after adjusting the pH of the effluent to 5, it was possible to circumvent the classical limitations of the Fenton process (related to the pH of the medium limited to between 2.5 and 3.0), performing a removal of 68% of the remaining dissolved organic carbon. The global dissolved organic carbon removal in this process was of 86% after a membrane filtration step before the photo-Fenton process. |
| Databáze: | OpenAIRE |
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