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- W3186336581 abstract "In this study, the biochar (BC) supported Fe–Cu bimetallic stabilized by PVP (Fe–Cu/PVP/BC) were prepared and utilized to enhance the nitrate (NO3−) removal and the selectivity toward nitrogen (N2). Results showed the optimum Fe:Cu:BC ratio and the dosage of the BC (pyrolysis at 700 °C) supported Fe–Cu bimetallic stabilized by polyvinylpyrrolidone (PVP) (Fe–Cu/PVP/BC700) were respectively 1:2:3 and 1 mg L−1 with the selectivity toward N2 of 31 %. This was mainly due to the synergy among Fe0, Cu0 and BC in the Fe–Cu/PVP/BC. The addition of Fe0 could reduce the NO3− through providing electron. The Cu0 and BC improved the selectivity of NO3− to N2 through forming [Cu–NO2−ads] and adjusting redox potential. The addition of Fe–Cu/PVP/BC could supply electrons for denitrification and enhance the relative abundances of Azospira and Thauera related to denitrification to improve NO3− removal. This result was further confirmed by the variations of denitrifying functional genes (narG, nirK, nirS and nosZ). This research provided an effective method to improve NO3− removal during surface water treatment in constructed wetlands (CWs) by adding Fe–Cu/PVP/BC." @default.
- W3186336581 created "2021-08-02" @default.
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- W3186336581 date "2021-11-01" @default.
- W3186336581 modified "2023-09-23" @default.
- W3186336581 title "Influence of modified biochar supported Fe–Cu/polyvinylpyrrolidone on nitrate removal and high selectivity towards nitrogen in constructed wetlands" @default.
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- W3186336581 doi "https://doi.org/10.1016/j.envpol.2021.117812" @default.
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