Abstract
The effects of electrode spacing and plants on the performance of microbial fuel cell-constructed wetland and purification efficiency of wastewater were investigated. rhapis excels, dracaena sanderiana, scindapsus aureus and iris were chosen as the wetland plants. The results indicated that CW-MFC with plants performed better than that without plant and the electricity production capacity was in the order of iris>, scindapsus aureus> dracaena sanderiana > rhapis excels. The electricity production capacity was also influenced by the electrode spacing. The Maximum power density of CW-MFC was 2.55 W·m-3when the electrode spacing was 10 cm, 30% and 50% higher than those with electrode spacing of 20 cm, and 30 cm. The power density difference of MFC with different spacing is due to internal resistance. The COD removal efficiency of CW-MFC was more than 80% and the efficiency decreased in the order of iris, dracaena sanderiana, rhapis excels and scindapsus aureus. The result indicated that when the electrode spacing was 10 cm, the highest electricity production and wastewater treatment performance were achieved in the CW-MFC with iris wetland plants.
| Original language | English |
|---|---|
| Pages (from-to) | 3656-3663 |
| Number of pages | 8 |
| Journal | Huanjing Kexue Xuebao / Acta Scientiae Circumstantiae |
| Volume | 37 |
| Issue number | 10 |
| DOIs | |
| State | Published - 6 Oct 2017 |
| Externally published | Yes |
Keywords
- Constructed wetland
- Electricity production
- Electrode spacing
- Microbial fuel cell
- Wastewater treatment efficiency
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