Research
| Title： | Effect of simultaneously addition of Fe3+and reed straw biochar on nitrogen removal efficiency and GWP for Anammox |
|---|---|
| First author： | Fu, Jingran; Liao, Huan; Wang, Zelong; Xiao, Yaxuan; Zhang, Yi; Bai, Guoliang; Zhang, Jing; Wang, Hongyu; Lu, Haijun; Dong, Yiqie; He, Xinghua |
| Journal： | CHEMICAL ENGINEERING JOURNAL |
| Years： | 2025 |
| DOI： | 10.1016/j.cej.2025.160090 |
| Abstract： | Anammox is a new type of autotrophic nitrogen removal technology with high efficiency and low consumption. However, the long start-up time and poor running stability of Anammox seriously restrict its large-scale application. In this study, simultaneously addition strategy of Fe3+ and reed straw biochar was developed to improve the nitrogen removal performance of Anammox. The nitrogen removal was highest in Anammox system with simultaneously addition of Fe3+ and reed straw biochar prepared at 600 degrees C for 2 h. And continuous addition of Fe3+ in the Anammox system with reed straw biochar not only exhibit high nitrogen removal efficiency and excellent resistance to nitrogen shock loading, but also had low global warming potential (GWP). Genus Candidatus Brocadia as dominant AnAOB had the highest relative abundance with the simultaneously addition of Fe3+ and reed straw biochar. Besides, enrichment of iron oxidation-reduction microorganisms through enhancing extracellular electron transfer with reed straw biochar achieved the coupling of Anammox, Feammox and NDFO, which was significantly facilitated the nitrogen removal performance of Anammox. |
