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Net-zero greenhouse gas emission from wastewater treatment: Mechanisms, opportunities and perspectives by Yanying He; Yiming Li; Xuecheng Li; Yingrui Liu; Yufen Wang; Haixiao Guo; Jiaqi Hou; Tingting Zhu; Yiwen Liu is a Engineering article available to read on EtoBox.

What is Net-zero greenhouse gas emission from wastewater treatment: Mechanisms, opportunities and perspectives about?

Net-zero emission and self-sustaining carbon-neutral have been widely encouraged and intensively explored in wastewater treatment, as the wastewater industry accounts for approximately 1.6% of global greenhouse gas (GHG) emissions. However, how to achieve net-zero GHG emission in wastewater treatment from a biological standpoint is still lacking. In this paper, the status of GHG (i.e. nitrous oxide (N2O), methane (CH4) and carbon dioxide (CO2)) production and emission in wastewater treatment was comprehensively reviewed. Generally, N2O emission contributes the majority of the total GHG emissions from wastewater treatment, and the dissolved N2O and CH4 in the effluent should be paid more attention for the further GHG mitigation. Based on the newly identified microbial communities capable of nitrogen removal with less GHG emissions, several alternative integration systems for GHG mitigation were discussed. Coupling denitrifying anaerobic methane oxidation with anammox process shows high nitrogen removal performance and low GHG emissions, which is regarded as a more promising integration system for GHG mitigation. Moreover, the novel strategies to manage N2O and CH4 as energy sources

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Author

Yanying He; Yiming Li; Xuecheng Li; Yingrui Liu; Yufen Wang; Haixiao Guo; Jiaqi Hou; Tingting Zhu; Yiwen Liu

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)