| Autor: |
Franco David Troncoso, Gabriela Marta Tonetto |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Sustainable Environment Research, Vol 31, Iss 1, Pp 1-14 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2468-2039 |
| DOI: |
10.1186/s42834-021-00109-4 |
| Popis: |
Abstract In this work, the degradation of methylene blue (MB) in aqueous solution by a heterogeneous Fenton-like process was studied. Nb2O5 supported on an anodized aluminum monolith was used as catalyst. The Nb2O5 coating generated during the catalyst synthesis was uniform and porous, with a thickness of 7 μm. Response surface methodology was used to study the relationship between process variables and MB degradation and chemical oxygen demand (COD) reduction. The optimal operating conditions were: initial MB concentration of 45 mg L− 1, initial H2O2 concentration in the reaction medium of 40 mM, catalyst loading of 7.85 kg Nb 2 O 5 $$ {\mathrm{kg}}_{{\mathrm{Nb}}_2{\mathrm{O}}_5} $$ m− 3, and pH 4, reaching a MB degradation of 98% and a COD reduction of 79% at 150 min. The high activity of the Nb2O5 monolith catalyst remained constant after 10 catalytic tests. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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