Response of microbial community structure to pre-acclimation strategies in microbial fuel cells for domestic wastewater treatment
| Autor: | Younghyun Park, Booki Min, Taeho Lee, Hong Suck Kim, Byung Goon Kim, Hyun-Woo Cho, Jaechul Yu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Environmental Engineering Microbial fuel cell Bioelectric Energy Sources Acclimatization Bioengineering 010501 environmental sciences Wastewater 01 natural sciences Actinobacteria Electricity 010608 biotechnology Waste Management and Disposal Electrodes 0105 earth and related environmental sciences biology Bacteria Sewage Renewable Energy Sustainability and the Environment Environmental engineering General Medicine biology.organism_classification Pulp and paper industry Activated sludge Microbial population biology Sewage treatment Proteobacteria |
| Zdroj: | Bioresource technology. 233 |
| ISSN: | 1873-2976 |
| Popis: | Microbial community structures and performance of air-cathode microbial fuel cells (MFCs) inoculated with activated sludge from domestic wastewater were investigated to evaluate the effects of three substrate pre-acclimation strategies: 1, serial pre-acclimation with acetate and glucose before supplying domestic wastewater; 2, one step pre-acclimation with acetate before supplying domestic wastewater; and 3, direct supply of domestic wastewater without any pre-acclimation. Strategy 1 showed much higher current generation (1.4mA) and Coulombic efficiency (33.5%) than strategies 2 (0.7mA and 9.4%) and 3 (0.9mA and 10.3%). Pyrosequencing showed that microbial communities were significantly affected by pre-acclimation strategy. Although Proteobacteria was the dominant phylum with all strategies, Actinobacteria was abundant when MFCs were pre-acclimated with glucose after acetate. Not only anode-respiring bacteria (ARB) in the genus Geobacter but also non-ARB belonging to the family Anaerolinaceae seemed to play important roles in air-cathode MFCs to produce electricity from domestic wastewater. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect