Exploiting a dosage model to enhance Photo-Fenton process performance
The performance of Photo-Fenton treatments is reported to heavily rely on how hydrogen peroxide is supplied. Rigorously optimizing the dosage profile of hydrogen profile is a challenge that has been hardly addressed. Although some model-based approaches have been explored, solutions of practical sig...
| Autores: | , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2024 |
| País: | España |
| Recursos: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/406872 |
| Acesso em linha: | https://hdl.handle.net/2117/406872 https://dx.doi.org/10.1016/j.cattod.2024.114537 |
| Access Level: | acceso abierto |
| Palavra-chave: | Hydrogen peroxide Catalysis Paracetamol Photo-Fenton Dosage of hydrogen peroxide Mathematical modelling Model exploitation Validation Aigua oxigenada Catàlisi Àrees temàtiques de la UPC::Enginyeria química |
| Resumo: | The performance of Photo-Fenton treatments is reported to heavily rely on how hydrogen peroxide is supplied. Rigorously optimizing the dosage profile of hydrogen profile is a challenge that has been hardly addressed. Although some model-based approaches have been explored, solutions of practical significance have not been produced. However, model-based approaches can be used to explore new dosage schemes and identify practical sub-optimal improvements. This work addressed the photo-Fenton degradation of Paracetamol (PCT) in an annular photoreactor, and used a kinetic model including variable H 2 O 2 dosage previously fit and reported for simulating new dosage schemes for unexplored operational conditions. Preliminary results allowed understanding trends and proposing new simulations, which in turn allowed identifying promising operation alternatives. Finally, experimental validation confirmed that significant reduction of TOC levels (20 percent points, beyond 80%) are possible. Furthermore, alternatives that could reach total mineralization were also identified for larger processing times (beyond 20 h). Thus, the work has once again demonstrated that model exploitation allows producing significant practical outcomes with a much-reduced experimental effort, and has produced unexplored hydrogen peroxide dosage schemes that increase the process performance reported previously and indicates the way to total mineralization. |
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