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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2505.18211 |
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| _version_ | 1866908378123468800 |
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| author | Trench, Aline B. Oturan, Nihal Demir, Aydeniz Moura, João P. C. Trellu, Clément Santos, Mauro C. Oturan, Mehmet A. |
| author_facet | Trench, Aline B. Oturan, Nihal Demir, Aydeniz Moura, João P. C. Trellu, Clément Santos, Mauro C. Oturan, Mehmet A. |
| contents | In this study, the comparative efficiency of different electrochemical advanced oxidation processes, such as anodic oxidation with electrogenerated H2O2 (AO- H2O2), electro-Fenton (EF), and its combination with UV irradiation (photoelectron-Fenton (PEF)), was investigated for the removal of methylparaben (MP) using a carbon felt cathode and a boron-doped diamond anode. The EF process achieved a higher MP removal efficiency than the AO-H2O2 process for all applied current densities. The total organic carbon (TOC) removal after 6 h of treatment at a current density of 10 mA cm-2 reached 75.0% and 91.9% for the AO- H2O2 and EF processes, respectively. The combination of EF and UV light improved the efficiency of the EF process. The PEF process achieved a TOC removal of 84.6% in only 2 h at 5 mA cm-2 and 96.8% after 6 h of treatment. Furthermore, based on identifying oxidation reaction intermediates and short-chain carboxylic acids generated during the treatment, a reaction pathway for methylparaben mineralization by hydroxyl radicals was proposed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_18211 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Degradation of methylparaben by anodic oxidation, electro-Fenton, and photoelectro-Fenton using carbon felt-BDD cell Trench, Aline B. Oturan, Nihal Demir, Aydeniz Moura, João P. C. Trellu, Clément Santos, Mauro C. Oturan, Mehmet A. Chemical Physics Materials Science In this study, the comparative efficiency of different electrochemical advanced oxidation processes, such as anodic oxidation with electrogenerated H2O2 (AO- H2O2), electro-Fenton (EF), and its combination with UV irradiation (photoelectron-Fenton (PEF)), was investigated for the removal of methylparaben (MP) using a carbon felt cathode and a boron-doped diamond anode. The EF process achieved a higher MP removal efficiency than the AO-H2O2 process for all applied current densities. The total organic carbon (TOC) removal after 6 h of treatment at a current density of 10 mA cm-2 reached 75.0% and 91.9% for the AO- H2O2 and EF processes, respectively. The combination of EF and UV light improved the efficiency of the EF process. The PEF process achieved a TOC removal of 84.6% in only 2 h at 5 mA cm-2 and 96.8% after 6 h of treatment. Furthermore, based on identifying oxidation reaction intermediates and short-chain carboxylic acids generated during the treatment, a reaction pathway for methylparaben mineralization by hydroxyl radicals was proposed. |
| title | Degradation of methylparaben by anodic oxidation, electro-Fenton, and photoelectro-Fenton using carbon felt-BDD cell |
| topic | Chemical Physics Materials Science |
| url | https://arxiv.org/abs/2505.18211 |