Abstract
Methane, as the second most emitted greenhouse gas (GHG), has a warming potential of approximately 86 times that of carbon dioxide within 20 years. Quantifying methane emissions is helpful to the country’s emission reduction efforts. However, currently, there is a lack of measurement data of methane emissions from natural gas fueling stations in China. In this study, a downwind quantification approach was employed to directly measure the methane emissions of nine compressed natural gas (CNG) fueling stations in East China according to the Environmental Protection Agency’s Other Test Method 33A (OTM 33A). Moreover, methane concentrations were also measured near the nozzle of the refueling dispenser and the process equipment in the station. The methane emissions of the nine stations lied within the range of 0.11–0.83 kg/h, and the distribution of the emission rate was skewed. It was found that the emissions from gas fueling stations could be divided into intermittent emissions and continuous emissions, of which the intermittent emissions were the main source of methane.
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Financial support from Environmental Defense Fund is received.
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All authors contributed to the study conception and design. Jianfeng Tang is responsible for the formulation of the overall research objectives, the proposal of the central idea of the article, the connection of the equipment and the site, and the review of the first draft. Material preparation, data collection, and analysis were performed by Yifan Wang and Fengyuan Zuo. The manuscript was written by Yifan Wang and Fei Li. The later review and revision of the article was completed by Jianfeng Tang and Donglai **e. All authors commented on previous versions of the manuscript. All authors read and approved the final manuscript. **ao Yu is mainly responsible for providing theoretical help for the manuscript and assisting in data processing. Jie Chen and Yifei Xu participated in the data measurement process.
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Wang, Y., Tang, J., Li, F. et al. Measurement of methane emissions from CNG fueling stations in East China. Environ Sci Pollut Res 29, 71949–71957 (2022). https://doi.org/10.1007/s11356-022-20929-0
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DOI: https://doi.org/10.1007/s11356-022-20929-0