Bioenergy Generation and Wastewater Purification with Li<sub>0.95</sub>Ta<sub>0.76</sub>Nb<sub>0.19</sub>Mg<sub>0.15</sub>O<sub>3</sub> as New Air-Photocathode for MFCs
MFC is a promising technology that can be used for simultaneous electricity generation and wastewater treatment. Power energy generation of a ferroelectric cathodic ceramic, Li<sub>0.95</sub>Ta<sub>0.76</sub>Nb<sub>0.19</sub>Mg<sub>0.15</sub>O<sub&g...
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MDPI AG
2022-11-01
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| author | Noureddine Touach Abdellah Benzaouak Jamil Toyir Adnane El Hamidi Mohammed El Mahi El Mostapha Lotfi Mohamed Kacimi Leonarda Francesca Liotta |
| author_facet | Noureddine Touach Abdellah Benzaouak Jamil Toyir Adnane El Hamidi Mohammed El Mahi El Mostapha Lotfi Mohamed Kacimi Leonarda Francesca Liotta |
| author_sort | Noureddine Touach |
| collection | DOAJ |
| description | MFC is a promising technology that can be used for simultaneous electricity generation and wastewater treatment. Power energy generation of a ferroelectric cathodic ceramic, Li<sub>0.95</sub>Ta<sub>0.76</sub>Nb<sub>0.19</sub>Mg<sub>0.15</sub>O<sub>3</sub> (LTNMg), has been measured in microbial fuel cells, integrating a single chamber fed by industrial wastewater (COD<sub>initial</sub> = 471 mg L<sup>−1</sup>, and pH<sub>initial</sub> = 7.24 at T = 27 °C). In this process, the mixed multicomponent oxide material has been prepared and characterized by XRD, PSD, TEM, and UV-Vis spectroscopy. The catalytic activity has been investigated by COD determination, analysis of heavy metals, and polarization measurement. The results show a high COD reduction efficiency, which reaches 95.70% after a working time of 168 h with a maximal power density of 228 mW m<sup>−2</sup>. In addition, the maximum value of generated voltage in the open-circuit potential (OCP) of this MFC configuration has been increased from 340 mV in the absence of a light source to 470 mV under irradiation, indicating the presence of a promoting photocatalytic effect of LTNMg, which improved the process of the cathodic electron transfer inside the MFC device. |
| first_indexed | 2024-03-09T18:25:34Z |
| format | Article |
| id | doaj.art-997b76a68fc74de9869e9d8778071838 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-09T18:25:34Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-997b76a68fc74de9869e9d87780718382023-11-24T07:55:53ZengMDPI AGCatalysts2073-43442022-11-011211142410.3390/catal12111424Bioenergy Generation and Wastewater Purification with Li<sub>0.95</sub>Ta<sub>0.76</sub>Nb<sub>0.19</sub>Mg<sub>0.15</sub>O<sub>3</sub> as New Air-Photocathode for MFCsNoureddine Touach0Abdellah Benzaouak1Jamil Toyir2Adnane El Hamidi3Mohammed El Mahi4El Mostapha Lotfi5Mohamed Kacimi6Leonarda Francesca Liotta7Laboratory of Spectroscopy, Molecular Modelling, Materials, Nanomaterials, Water and Environment, Environmental Materials Team, École Nationale Supérieure d’Arts et Métiers (ENSAM), Mohammed V University in Rabat, B.P. 6207 Avenue des Forces Armées Royales, Rabat B.P. 1014, MoroccoLaboratory of Spectroscopy, Molecular Modelling, Materials, Nanomaterials, Water and Environment, Environmental Materials Team, École Nationale Supérieure d’Arts et Métiers (ENSAM), Mohammed V University in Rabat, B.P. 6207 Avenue des Forces Armées Royales, Rabat B.P. 1014, MoroccoLaboratoire des Procédés, Matériaux et Environnement (LPME), Faculté Polydisciplinaire (FP-Taza), Université Sidi Mohammed Ben Abdellah, Taza B.P. 1223, MoroccoLaboratory of Physical Chemistry of Materials, Catalysis and Environment, Department of Chemistry, Faculty of Sciences, Mohammed V University in Rabat, Rabat B.P. 1014, MoroccoLaboratory of Spectroscopy, Molecular Modelling, Materials, Nanomaterials, Water and Environment, Environmental Materials Team, École Nationale Supérieure d’Arts et Métiers (ENSAM), Mohammed V University in Rabat, B.P. 6207 Avenue des Forces Armées Royales, Rabat B.P. 1014, MoroccoLaboratory of Spectroscopy, Molecular Modelling, Materials, Nanomaterials, Water and Environment, Environmental Materials Team, École Nationale Supérieure d’Arts et Métiers (ENSAM), Mohammed V University in Rabat, B.P. 6207 Avenue des Forces Armées Royales, Rabat B.P. 1014, MoroccoLaboratory of Physical Chemistry of Materials, Catalysis and Environment, Department of Chemistry, Faculty of Sciences, Mohammed V University in Rabat, Rabat B.P. 1014, MoroccoIstituto per lo Studio dei Materiali Nanostrutturati (ISMN)-CNR, Via Ugo La Malfa, 153, 90146 Palermo, ItalyMFC is a promising technology that can be used for simultaneous electricity generation and wastewater treatment. Power energy generation of a ferroelectric cathodic ceramic, Li<sub>0.95</sub>Ta<sub>0.76</sub>Nb<sub>0.19</sub>Mg<sub>0.15</sub>O<sub>3</sub> (LTNMg), has been measured in microbial fuel cells, integrating a single chamber fed by industrial wastewater (COD<sub>initial</sub> = 471 mg L<sup>−1</sup>, and pH<sub>initial</sub> = 7.24 at T = 27 °C). In this process, the mixed multicomponent oxide material has been prepared and characterized by XRD, PSD, TEM, and UV-Vis spectroscopy. The catalytic activity has been investigated by COD determination, analysis of heavy metals, and polarization measurement. The results show a high COD reduction efficiency, which reaches 95.70% after a working time of 168 h with a maximal power density of 228 mW m<sup>−2</sup>. In addition, the maximum value of generated voltage in the open-circuit potential (OCP) of this MFC configuration has been increased from 340 mV in the absence of a light source to 470 mV under irradiation, indicating the presence of a promoting photocatalytic effect of LTNMg, which improved the process of the cathodic electron transfer inside the MFC device.https://www.mdpi.com/2073-4344/12/11/1424ferroelectric ceramicMFCswastewater treatmentphotocatalysisCODheavy metals |
| spellingShingle | Noureddine Touach Abdellah Benzaouak Jamil Toyir Adnane El Hamidi Mohammed El Mahi El Mostapha Lotfi Mohamed Kacimi Leonarda Francesca Liotta Bioenergy Generation and Wastewater Purification with Li<sub>0.95</sub>Ta<sub>0.76</sub>Nb<sub>0.19</sub>Mg<sub>0.15</sub>O<sub>3</sub> as New Air-Photocathode for MFCs Catalysts ferroelectric ceramic MFCs wastewater treatment photocatalysis COD heavy metals |
| title | Bioenergy Generation and Wastewater Purification with Li<sub>0.95</sub>Ta<sub>0.76</sub>Nb<sub>0.19</sub>Mg<sub>0.15</sub>O<sub>3</sub> as New Air-Photocathode for MFCs |
| title_full | Bioenergy Generation and Wastewater Purification with Li<sub>0.95</sub>Ta<sub>0.76</sub>Nb<sub>0.19</sub>Mg<sub>0.15</sub>O<sub>3</sub> as New Air-Photocathode for MFCs |
| title_fullStr | Bioenergy Generation and Wastewater Purification with Li<sub>0.95</sub>Ta<sub>0.76</sub>Nb<sub>0.19</sub>Mg<sub>0.15</sub>O<sub>3</sub> as New Air-Photocathode for MFCs |
| title_full_unstemmed | Bioenergy Generation and Wastewater Purification with Li<sub>0.95</sub>Ta<sub>0.76</sub>Nb<sub>0.19</sub>Mg<sub>0.15</sub>O<sub>3</sub> as New Air-Photocathode for MFCs |
| title_short | Bioenergy Generation and Wastewater Purification with Li<sub>0.95</sub>Ta<sub>0.76</sub>Nb<sub>0.19</sub>Mg<sub>0.15</sub>O<sub>3</sub> as New Air-Photocathode for MFCs |
| title_sort | bioenergy generation and wastewater purification with li sub 0 95 sub ta sub 0 76 sub nb sub 0 19 sub mg sub 0 15 sub o sub 3 sub as new air photocathode for mfcs |
| topic | ferroelectric ceramic MFCs wastewater treatment photocatalysis COD heavy metals |
| url | https://www.mdpi.com/2073-4344/12/11/1424 |
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