Towards an Efficient Generalization of the Online Dosage of Hydrogen Peroxide in Photo-Fenton Process to Treat Industrial Wastewater
| Autor: | Xiangwei Yu, Alejandro Cabrera-Reina, Moisès Graells, Sara Miralles-Cuevas, Montserrat Pérez-Moya |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Química, Universitat Politècnica de Catalunya. CEPIMA - Center for Process and Environment Engineering |
| Rok vydání: | 2021 |
| Předmět: |
Sewage
paracetamol Health Toxicology and Mutagenesis Iron Public Health Environmental and Occupational Health hydrogen peroxide dosage Hydrogen Peroxide Wastewater Waste Disposal Fluid Article sulfamethazine Enginyeria química [Àrees temàtiques de la UPC] Aigües residuals dissolved oxygen Medicine photo-Fenton process Oxidation-Reduction control wastewater Water Pollutants Chemical |
| Zdroj: | riUAL. Repositorio Institucional de la Universidad de Almería Universidad de Almería International Journal of Environmental Research and Public Health UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) International Journal of Environmental Research and Public Health; Volume 18; Issue 24; Pages: 13313 International Journal of Environmental Research and Public Health, Vol 18, Iss 13313, p 13313 (2021) |
| Popis: | This work addresses the dosage of H2O2 in photo-Fenton processes and the monitoring of Dissolved oxygen (DO) that can be used to drive the dosage of H2O2. The objective of this work is to show that a smarter monitoring of a process variable such as DO (for which on-line measurement can be inexpensively obtained) enables the proposal and implementation of efficient dosage strategies. The work explores the application of a recent proposed strategy consisting of: (i) initial H2O2 addition, (ii) continuous H2O2 addition until a DO set up is reached, and (iii) automatic H2O2 addition by an on-off control system based on DO slope monitoring, and applies it to the treatment of different individual contaminants and their mixtures (paracetamol and sulfamethazine). The assays performed following this dosage strategy showed improved values of TOC removed per H2O2 consumed. For the case of sulfamethazine, this improvement increased up to 25–35% with respect to the efficiency obtained without dosage. Furthermore, a deeper analysis of the results allowed detecting and assessing the opportunity to redesign the dosage scheme and reduce its complexity and the number of control parameters. The promising results obtained are discussed in regard of future research into further increasing the simplicity and robustness of this generalized control strategy that improves the applicability of the photo-Fenton process by reducing its operating costs and increasing automation. |
| Databáze: | OpenAIRE |
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