Bioenergy Generation and Wastewater Purification with Li0.95Ta0.76Nb0.19Mg0.15O3 as New Air-Photocathode for MFCs

Noureddine Touach; Abdellah Benzaouak; Jamil Toyir; Adnane El Hamidi; Mohammed El Mahi; El Mostapha Lotfi; Mohamed Kacimi; Leonarda Francesca Liotta

doi:10.3390/catal12111424

Catalysts (Nov 2022)

Bioenergy Generation and Wastewater Purification with Li0.95Ta0.76Nb0.19Mg0.15O3 as New Air-Photocathode for MFCs

Noureddine Touach,
Abdellah Benzaouak,
Jamil Toyir,
Adnane El Hamidi,
Mohammed El Mahi,
El Mostapha Lotfi,
Mohamed Kacimi,
Leonarda Francesca Liotta

Affiliations

Noureddine Touach: Laboratory 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, Morocco
Abdellah Benzaouak: Laboratory 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, Morocco
Jamil Toyir: Laboratoire des Procédés, Matériaux et Environnement (LPME), Faculté Polydisciplinaire (FP-Taza), Université Sidi Mohammed Ben Abdellah, Taza B.P. 1223, Morocco
Adnane El Hamidi: Laboratory of Physical Chemistry of Materials, Catalysis and Environment, Department of Chemistry, Faculty of Sciences, Mohammed V University in Rabat, Rabat B.P. 1014, Morocco
Mohammed El Mahi: Laboratory 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, Morocco
El Mostapha Lotfi: Laboratory 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, Morocco
Mohamed Kacimi: Laboratory of Physical Chemistry of Materials, Catalysis and Environment, Department of Chemistry, Faculty of Sciences, Mohammed V University in Rabat, Rabat B.P. 1014, Morocco
Leonarda Francesca Liotta: Istituto per lo Studio dei Materiali Nanostrutturati (ISMN)-CNR, Via Ugo La Malfa, 153, 90146 Palermo, Italy

DOI: https://doi.org/10.3390/catal12111424
Journal volume & issue: Vol. 12, no. 11
p. 1424

Abstract

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MFC is a promising technology that can be used for simultaneous electricity generation and wastewater treatment. Power energy generation of a ferroelectric cathodic ceramic, Li0.95Ta0.76Nb0.19Mg0.15O3 (LTNMg), has been measured in microbial fuel cells, integrating a single chamber fed by industrial wastewater (CODinitial = 471 mg L−1, and pHinitial = 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−2. 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.

Published in Catalysts

ISSN: 2073-4344 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Chemical technology; Science: Chemistry
Website: https://www.mdpi.com/journal/catalysts

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