焦炭/黄铁矿强化微生物燃料电池-人工湿地脱氮产电性能OA

Microbial fuel cell-constructed wetland(MFC-CW)is considered an environment-friendly and sustain-able technology to simultaneously purify water and generate bioelectricity.In this study,two MFC-CWs,including a coke/pyrite-based system(Mix-MFC-CW)and a pyrite-based system(Py-MFC-CW),were constructed to explore the role of coke and pyrite as mixed anode materials in enhancing system performance.Results showed that the in-corporation of coke increased the microporous structure and specific surface area of the anode region,significantly enhancing the removal efficiency of ammonium nitrogen(89.84％±1.63％)and total inorganic nitrogen(87.82％±1.58％),as well as electricity generation.The maximum output voltage and power density reached 666 mV and 1.18 mW·m-3,respectively.High-throughput sequencing results showed that Py-MFC-CW exhibited advantage in phosphorus removal,which may be related to the higher abundance of norank_o__Run-SP154.In contrast,the abundances of denitrifying bacteria such as Thiothrix,Candidatus_Competibacter,and Thauera were higher in Mix-MFC-CW than in Py-MFC-CW.Therefore,Mix-MFC-CW would be a competitive technology facilitating both nitro-gen removal and electricity generation.