Journal
BIORESOURCE TECHNOLOGY
Volume 247, Issue -, Pages 434-442Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.09.124
Keywords
Anammox; Landfill leachate; High-throughput sequencing; Microbial Fuel Cell (MFC); Nitrogen removal; Denitrification
Funding
- Natural Science Foundation of China [31370510, 21577038, 31411130123]
- Shanghai Project of International Cooperation of Science and Technology [1352072600]
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MFC was studied using young and old landfill leachate substrate to remove pollutants and produce renewable energy coupled with study of anodic microbiomes. The power output of 96.8 mWm(-2) with COD removal of 90.0 +/- 1.2% was achieved at 60% young leachate in batch mode, which decreased to 75 mWm(-2) having 55.5% COD abatement in continuous mode employing 100% young leachate. Power production using simulated wastewater without organic source proved that ammonium could also serve as fuel in MFC. The high ammonium dosage increased the overall system performance but beyond a certain limit, the inhibitory effect intensified. Nitrogen removal (66.0 +/- 3.3% NH4+-N and 86.0 +/- 0.1% NO2--N) occurred obeying different removal pathways. Sequencing analyses revealed that anammox bacteria (2%), denitrifying bacteria (5%) and electrogenic bacteria (15%) were in abundance of the microbial community in the anode. This technology can be promising for leachate treatment and power production however certain constraints still exist in pilot scale experiments.
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