Insights into the applicability of microbial fuel cells in wastewater treatment plants for a sustainable generation of electricity

Microbial fuel cells (MFCs) are often discussed as a part of a sustainable generation of electricity for the coming 'energy revolution'. In particular, the application of MFCs in wastewater treatment plants (WWTPs) are often regarded as an attractive alternative to reduce costs while gener...

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Publié dans:Environmental technology. - 1993. - 40(2019), 9 vom: 16. Apr., Seite 1101-1109
Auteur principal: Krieg, Thomas (Auteur)
Autres auteurs: Mayer, Florian, Sell, Dieter, Holtmann, Dirk
Format: Article en ligne
Langue:English
Publié: 2019
Accès à la collection:Environmental technology
Sujets:Journal Article Wastewater treatment bio-electrochemistry microbial fuel cells renewable energy sludge loading Sewage Waste Water
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520 |a Microbial fuel cells (MFCs) are often discussed as a part of a sustainable generation of electricity for the coming 'energy revolution'. In particular, the application of MFCs in wastewater treatment plants (WWTPs) are often regarded as an attractive alternative to reduce costs while generating electricity. Field surveys are necessary to show the applicability of MFCs in WWTPs considering daily fluctuations and environmental effects such as rain events affecting the MFC performance remarkably. In this study, a MFC system was tested in four municipal WWTPs using different modes of operation. A correlation between current densities and sludge loading (SL) was identified. At low SLs, the activated sludge needs a large amount of the energy derived from the substrate for the maintenance metabolism resulting in quite low current densities of the MFC. At high SLs much more of the energy can be transferred from the activated sludge to the electrode, resulting in higher currents. Furthermore, the effect of environmental conditions on the current densities was evaluated. WWTPs have daily fluctuations depending on the wastewater composition, weather phenomena and population equivalents. Our data show that these daily fluctuations can only be observed in the MFC performance at WWTPs below 50,000 population equivalents 
650 4 |a Journal Article 
650 4 |a Wastewater treatment 
650 4 |a bio-electrochemistry 
650 4 |a microbial fuel cells 
650 4 |a renewable energy 
650 4 |a sludge loading 
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650 7 |a Waste Water  |2 NLM 
700 1 |a Mayer, Florian  |e verfasserin  |4 aut 
700 1 |a Sell, Dieter  |e verfasserin  |4 aut 
700 1 |a Holtmann, Dirk  |e verfasserin  |4 aut 
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