Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7477685 | Journal of Environmental Management | 2018 | 10 Pages |
Abstract
In this study, a continuous flow stack consisting of 40 individual air-cathode MFC units was used to determine the performance of stacked MFC during domestic wastewater treatment operated with unconnected individual MFC and in series and parallel configuration. The voltages obtained from individual MFC units were of 0.08-1.1â¯Vâ¯at open circuit voltage, while in series connection, the maximum power and current density were 2500â¯mW/m2 and 500â¯mA/m2 (4.9â¯V), respectively. In parallel connection, the maximum power and current density was 5.8â¯mW/m2 and 24â¯mA/m2, respectively. When the cells were not connected to each other MFC unit, the main bacterial species found in the anode biofilms were Bacillus and Lysinibacillus. After switching from unconnected to series and parallel connections, the most abundant species in the stacked MFC were Pseudomonas aeruginosa, followed by different Bacilli classes. This study demonstrated that when the stacked MFC was switched from unconnected to series and parallel connections, the pollutants removal, performance electricity and microbial community changed significantly. Voltages drops were observed in the stacked MFC, which was mainly limited by the cathodes. These voltages loss indicated high resistances within the stacked MFC, generating a parasitic cross current.
Keywords
Related Topics
Physical Sciences and Engineering
Energy
Renewable Energy, Sustainability and the Environment
Authors
Edson Baltazar Estrada-Arriaga, Jesús Hernández-Romano, Liliana GarcÃa-Sánchez, Rosa Angélica Guillén Garcés, Erick Obed Bahena-Bahena, Oscar Guadarrama-Pérez, Gabriela Eleonora Moeller Chavez,