Effect of simultaneously addition of Fe3+ and reed straw biochar on nitrogen removal efficiency and GWP for Anammox

IF 13.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2025-02-01 DOI:10.1016/j.cej.2025.160090

Jingran Fu, Huan Liao, Zelong Wang, Yaxuan Xiao, Yi Zhang, Guoliang Bai, Jing Zhang, Hongyu Wang, Haijun Lu, Yiqie Dong, Xinghua He

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引用次数: 0

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 °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.

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.