生物炭
厌氧氨氧化菌
电子转移
化学
胞外聚合物
生物膜
无氧运动
环境化学
制浆造纸工业
化学工程
热解
细菌
反硝化
氮气
生物
有机化学
生理学
反硝化细菌
工程类
遗传学
作者
Tianyi An,Yaofeng Chang,Junxiang Xie,Kai Tang,Yang Liu,Yuxue Liu,Chongjun Chen
出处
期刊:ACS ES&T engineering
[American Chemical Society]
日期:2023-10-19
卷期号:3 (11): 2097-2108
被引量:24
标识
DOI:10.1021/acsestengg.3c00361
摘要
Accelerating the start-up of anaerobic ammonium oxidation (anammox) is the primary condition for its large-scale application. Anammox with magnetic biochar took the shortest start-up time, reducing 15–24 days compared to the control blank (CK) and 6–26 days with pyrolytic biochar. FCS300 (magnetic biochar prepared at 300 °C) could produce the highest levels of heme c (0.123 μmol/g VSS). The extracellular polymeric substances (EPS) in FCS300 had the lowest R ct (12.6 kΩ) and a substantially higher electron-transfer capability (ETC). Candidatus jettenia was the main anammox bacteria (AnAOB) in reactors after the successful start-up, and its distribution was spatially variable on the suspended sludge and the biofilm of the biochar. The findings implied that magnetic biochar might improve electron transfer by shortening the anammox start-up time via an electron shuttle mechanism or direct interspecies electron transfer.
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