The Influent Effects of Flow Rate Profile on the Performance of Microbial Fuel Cells Model
The energy contained in wastewaters has been identified as a promising sustainable energy resource that could be harvested by using microbial fuel cells (MFC). When dealing with real wastewaters, the MFCs should be able to manage high flow rates and flow rates fluctuations. In this work, the short-t...
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| Format: | Article |
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MDPI AG
2020-09-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/18/4735 |
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| author | Szymon Potrykus Sara Mateo Janusz Nieznański Francisco Jesús Fernández-Morales |
| author_facet | Szymon Potrykus Sara Mateo Janusz Nieznański Francisco Jesús Fernández-Morales |
| author_sort | Szymon Potrykus |
| collection | DOAJ |
| description | The energy contained in wastewaters has been identified as a promising sustainable energy resource that could be harvested by using microbial fuel cells (MFC). When dealing with real wastewaters, the MFCs should be able to manage high flow rates and flow rates fluctuations. In this work, the short-term effects of the influent flow rate variations on the performance of a microbial fuel cell has been studied. With this aim, the influent flow rate was stepwise increased from 0.72 to 7.2 L/d and then stepwise decreased. The obtained results indicate that, on the one hand, an increase in the influent flow rate leads to higher chemical oxygen demand removal rates up to 396 g/(L/d) and higher electric power generation almost 18 mW/m<sup>2</sup>, but to lower coulombic efficiencies. On the other hand, the reduction of the flow rate increases the coulombic efficiencies, as well as the percentage of chemical oxygen demand removed, but decreases electric power generation. In the short-term, the exposition to higher influent flow rates causes the growth of the microbial population of the MFC, the growth of the non-electrogenic microorganisms being higher than that of the electrogenic ones. The higher growth of non-electrogenic microorganisms may lead to lower coulombic efficiencies. |
| first_indexed | 2024-03-10T16:25:01Z |
| format | Article |
| id | doaj.art-f21e691858e24a80888770c3ffe00d45 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T16:25:01Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-f21e691858e24a80888770c3ffe00d452023-11-20T13:21:57ZengMDPI AGEnergies1996-10732020-09-011318473510.3390/en13184735The Influent Effects of Flow Rate Profile on the Performance of Microbial Fuel Cells ModelSzymon Potrykus0Sara Mateo1Janusz Nieznański2Francisco Jesús Fernández-Morales3Faculty of Electrical and Control Engineering, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, PolandDepartment of Chemical Engineering, Autonomous University of Madrid, Cantoblanco, 28049 Madrid, SpainFaculty of Electrical and Control Engineering, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, PolandDepartment of Chemical Engineering, ITQUIMA, University of Castilla-La Mancha, Av. Camilo José Cela, 1, 13071 Ciudad Real, SpainThe energy contained in wastewaters has been identified as a promising sustainable energy resource that could be harvested by using microbial fuel cells (MFC). When dealing with real wastewaters, the MFCs should be able to manage high flow rates and flow rates fluctuations. In this work, the short-term effects of the influent flow rate variations on the performance of a microbial fuel cell has been studied. With this aim, the influent flow rate was stepwise increased from 0.72 to 7.2 L/d and then stepwise decreased. The obtained results indicate that, on the one hand, an increase in the influent flow rate leads to higher chemical oxygen demand removal rates up to 396 g/(L/d) and higher electric power generation almost 18 mW/m<sup>2</sup>, but to lower coulombic efficiencies. On the other hand, the reduction of the flow rate increases the coulombic efficiencies, as well as the percentage of chemical oxygen demand removed, but decreases electric power generation. In the short-term, the exposition to higher influent flow rates causes the growth of the microbial population of the MFC, the growth of the non-electrogenic microorganisms being higher than that of the electrogenic ones. The higher growth of non-electrogenic microorganisms may lead to lower coulombic efficiencies.https://www.mdpi.com/1996-1073/13/18/4735electric power generationflow ratemicrobial fuel cellswastewatermodelling |
| spellingShingle | Szymon Potrykus Sara Mateo Janusz Nieznański Francisco Jesús Fernández-Morales The Influent Effects of Flow Rate Profile on the Performance of Microbial Fuel Cells Model Energies electric power generation flow rate microbial fuel cells wastewater modelling |
| title | The Influent Effects of Flow Rate Profile on the Performance of Microbial Fuel Cells Model |
| title_full | The Influent Effects of Flow Rate Profile on the Performance of Microbial Fuel Cells Model |
| title_fullStr | The Influent Effects of Flow Rate Profile on the Performance of Microbial Fuel Cells Model |
| title_full_unstemmed | The Influent Effects of Flow Rate Profile on the Performance of Microbial Fuel Cells Model |
| title_short | The Influent Effects of Flow Rate Profile on the Performance of Microbial Fuel Cells Model |
| title_sort | influent effects of flow rate profile on the performance of microbial fuel cells model |
| topic | electric power generation flow rate microbial fuel cells wastewater modelling |
| url | https://www.mdpi.com/1996-1073/13/18/4735 |
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