An integrated 45 L pilot microbial fuel cell system at a full-scale wastewater treatment plant
| Autor: | Daniel Herzer, Marc Wichern, Sylvia Gredigk-Hoffmann, Patrick Schulte, Karl-Georg Schmelz, Heinz Hiegemann, Manfred Lübken, Edith Nettmann |
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| Rok vydání: | 2016 |
| Předmět: |
Environmental Engineering
Microbial fuel cell Hydraulic retention time Bioelectric Energy Sources Nitrogen Energy balance Pilot Projects Bioengineering 02 engineering and technology Wastewater 010501 environmental sciences Waste Disposal Fluid 01 natural sciences Clarifier Waste Management and Disposal Effluent 0105 earth and related environmental sciences Biological Oxygen Demand Analysis Energy recovery Sewage Renewable Energy Sustainability and the Environment Environmental engineering General Medicine Hydrogen-Ion Concentration 021001 nanoscience & nanotechnology Environmental science Sewage treatment 0210 nano-technology |
| Zdroj: | Bioresource Technology. 218:115-122 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2016.06.052 |
| Popis: | A 45-L pilot MFC system, consisting of four single-chamber membraneless MFCs, was integrated into a full-scale wastewater treatment plant (WWTP) and operated under practical conditions with the effluent of the primary clarifier for nine months to identify an optimal operational strategy for stable power output and maximum substrate based energy recovery (Normalized Energy Recovery, NER). Best results with the MFC were obtained at a hydraulic retention time of 22h with COD, TSS and nitrogen removal of 24%, 40% and 28%, respectively. Mean NER of 0.36kWhel/kgCOD,deg and coulombic efficiency of 24.8% were reached. Experimental results were used to set up the first described energy balance for a whole WWTP with an integrated MFC system. Energetic calculations of the model WWTP showed that energy savings due to reduced excess sludge production and energy gain of the MFC are significantly higher than the loss of energy due to reduced biogas production. |
| Databáze: | OpenAIRE |
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