Solar photo-assisted electrochemical processes applied to actual industrial and urban wastewaters: A practical approach based on recent literature
| Autor: | Irene Salmerón, Isabel Oller, Sixto Malato |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Environmental Engineering
Health Toxicology and Mutagenesis Iron 0208 environmental biotechnology chemistry.chemical_element 02 engineering and technology 010501 environmental sciences Wastewater Electrochemistry 01 natural sciences Organic compound Water Purification Chlorine Environmental Chemistry Plataforma Solar de Almería Effluent 0105 earth and related environmental sciences chemistry.chemical_classification Public Health Environmental and Occupational Health General Medicine General Chemistry Mineralization (soil science) Hydrogen Peroxide Pulp and paper industry Pollution 020801 environmental engineering chemistry Degradation (geology) Environmental science Sewage treatment Oxidation-Reduction Water Pollutants Chemical |
| Zdroj: | Chemosphere. 279 |
| ISSN: | 1879-1298 |
| Popis: | The application of electrochemical processes for wastewater treatment has increase significantly in the last two decades. However, most of the works are focused on lab-scale systems testing in saline simulated solutions spiked with a reference organic compound, evidencing the scarcity of studies on actual wastewaters through a more realistic practical approach. The aim of the present work is assessing the performance of electrochemical treatments in actual matrices, considering the formation of different oxidants species, apart from hydroxyl radicals, from dissolved ions contained in target effluents as well as both, the regeneration of Fe2+ and their combination with a light irradiation source. The degradation of a mix of microcontaminants in water matrices with different complexity by solar photoelectron-Fenton at natural pH and at pilot scale has been carried out at Plataforma Solar de Almeria. Higher degradation rates were obtained when focusing on the more complex and saline matrices. In addition, complex industrial wastewaters mineralization was also studied by means of solar assisted electro-oxidation, showing the crucial role of ammonium concentration in the effluent, since it acts as a competitor for active chlorine species and so reducing the mineralization rate. |
| Databáze: | OpenAIRE |
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