Journal
CHEMOSPHERE
Volume 264, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2020.128456
Keywords
CW-MEF; Organic matter; Nitrobenzene; Aniline; Microbial community
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Funding
- Major Foundation of Hebei Educational Committee [ZD2019067]
- Tangshan science and technology innovation team training plan [19130208C]
- Hebei Province science and technology project [17273802D]
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The study found that the CW-MEF system can effectively degrade nitrobenzene and aniline in wastewater, with different power generation capacities in different stages. High-throughput sequencing analysis revealed differences in bacterial composition in different sludge layers.
The degradation of nitrobenzene and its intermediate aniline from wastewater by constructed wetlands coupled with the micro-electric field (CW-MEF) technology was studied. The results showed that the CW-MEF system had good degradation. With the increase of influent concentration of nitrobenzene, the removal rate of the anode was excellent which remained above 86%, but the degradation of CW-MEF for COD decreased. In different stages, the power generation capacity was different. In the second stage, the power generation voltage reached 430 V and the average power density was 85.07 MW m(-3), while the maximum reached 87.47 MW m(-3). Through high-throughput sequencing analysis, the Al sludge layer contained 36% of thick-walled bacteria and 20% of bacteroides, the A2 contained about 20% of campylobacter green, and the A3 contained 10% of green campylobacter, pachyphyte and bacteroides. (C) 2020 Elsevier Ltd. All rights reserved.
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