Impact of oxygen injection on CH4 and N2O emissions from rising main sewers

Ganigue, Ramon and Yuan, Zhiguo (2014) Impact of oxygen injection on CH4 and N2O emissions from rising main sewers. Journal of Environmental Management, 144 279-285. doi:10.1016/j.jenvman.2014.04.023

Author Ganigue, Ramon
Yuan, Zhiguo
Title Impact of oxygen injection on CH4 and N2O emissions from rising main sewers
Journal name Journal of Environmental Management   Check publisher's open access policy
ISSN 0301-4797
Publication date 2014-11-01
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.jenvman.2014.04.023
Open Access Status
Volume 144
Start page 279
End page 285
Total pages 7
Place of publication London, United Kingdom
Publisher Academic Press
Collection year 2015
Language eng
Subject 2305 Environmental Engineering
2311 Waste Management and Disposal
2308 Management, Monitoring, Policy and Law
Abstract Oxygen injection is a commonly used mitigation strategy for sulfide control in sewers. Methane, a potent greenhouse gas, is also produced in sewers. Oxygen injection may reduce methane generation/emission, but could potentially lead to N2O production due to the development of a nitrifying microbial community. The impact of oxygen dosing for sulfide control in sewers on CH4 and N2O production was assessed in this study in laboratory sewer reactors. Results showed that oxygen injection is able to reduce CH4 formation in sewers, although full control of CH4 was not achieved, likely due to partial oxygen penetration into sewer biofilm. The experimental results also revealed a nitrogen loss of around 5mN/L. However, no significant N2O accumulation was detected.
Keyword Methane
Nitrous oxide
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
Advanced Water Management Centre Publications
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