Sulfur cycle-mediated biological nitrogen removal and greenhouse gas abatement processes: Micro-oxygen regulation tells the story.

Xijun Xu, Nanqi Ren, Duu-Jong Lee, Yu Zhang, Quan Zhang, Chuan Chen, Wei Wang, Defeng Xing

Journal: Bioresource technology 2024;414():131614

PMID: 39395607

Full Text on Elsevier Science View on PubMed

Abstract

Sulfur-mediated autotrophic biological nitrogen removal (BNR) processes favor the reduction of greenhouse gas (GHG) emissions compared to heterotrophic BNR processes. Micro-oxygen environments are widely prevalent in practical BNR systems, and the mechanisms of GHG emissions mediated by multi-elements, including nitrogen (N), sulfur (S), and oxygen (O), remain to be systematically summarized. This review reveals the functional microorganisms involved in sulfur-mediated BNR processes under micro-oxygen regulation, elucidating their metabolic mechanisms and interactions. The GHG abatement potential of sulfur-mediated BNR processes under micro-oxygen regulation is highlighted, along with recent advances in multi-scenario applications. The fate of GHG in wastewater treatment systems is explored and insights into future multi-scale GHG regulatory strategies are provided. Overall, the application of sulfur-mediated BNR processes under micro-oxygen regulation exhibits great potential. This review can act as a guide for the effective implementation of strategies to mitigate the environmental impacts of GHG emissions from wastewater treatment processes.

Address: State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, Heilongjiang Province, 150090, China.; Department of Mechanical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China; Department of Chemical Engineering and Materials Science, Yuan Ze University, Chung-li 32003, Taiwan.; State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, Heilongjiang Province, 150090, China. Electronic address: [email protected].

DOI: 10.1016/j.biortech.2024.131614

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MeSH Terms: Greenhouse Gases, Sulfur, Oxygen, Nitrogen, Wastewater