| Title: | Emission of VOCs from service stations in Beijing: Species characteristics and pollutants co-control based on SOA and O(3) |
| Author(s): | Hu W; Liang W; Huang Y; Liu M; Yang H; Ren B; Yang T; |
| Address: | "Key Laboratory of Beijing on Regional Air Pollution Control, Faculty of Environment and Life, Beijing University of Technology, Beijing, 100124, China; National Engineering Research Center of Urban Environmental Pollution Control, Beijing Key Laboratory of Urban Atmospheric Volatile Organic Compounds Control Technology and Applications, Beijing Municipal Research Institute of Eco-Environmental Protection, Beijing, 100037, China. Key Laboratory of Beijing on Regional Air Pollution Control, Faculty of Environment and Life, Beijing University of Technology, Beijing, 100124, China. Electronic address: liangwenj@bjut.edu.cn. National Engineering Research Center of Urban Environmental Pollution Control, Beijing Key Laboratory of Urban Atmospheric Volatile Organic Compounds Control Technology and Applications, Beijing Municipal Research Institute of Eco-Environmental Protection, Beijing, 100037, China. Electronic address: huangyuhu@sina.com. Beijing Vehicle Emissions Management Center, Beijing, 100176, China. National Engineering Research Center of Urban Environmental Pollution Control, Beijing Key Laboratory of Urban Atmospheric Volatile Organic Compounds Control Technology and Applications, Beijing Municipal Research Institute of Eco-Environmental Protection, Beijing, 100037, China" |
| DOI: | 10.1016/j.jenvman.2023.117614 |
| ISSN/ISBN: | 1095-8630 (Electronic) 0301-4797 (Linking) |
| Abstract: | "Currently, air pollution is primarily characterized by PM(2.5) and O(3). Therefore, the co-control of PM(2.5) and O(3) has become an important task of atmosphere pollution prevention and control in China. However, few studies have been conducted on the emissions from vapor recovery and processes, which is an important source of VOCs. This paper analyzed the VOC emissions of three vapor process technologies in service stations and first proposed key pollutants for priority control based on the coordinated reactivity of O(3) and SOA. The concentration of VOCs emitted from the vapor processor was 3.14-9.95 g m(-3), compared to 631.2-717.8 g m(-3) for uncontrolled vapor. Alkanes, alkenes, and halocarbons accounted for a high proportion of the vapor both before and after control. Among the emissions, i-pentane, n-butane, and i-butane were the most abundant species. Then, the species of OFP and SOAP were calculated through the maximum incremental reactivity (MIR) and fractional aerosol coefficient (FAC). The average source reactivity (SR) value of the VOC emissions from three service stations was 1.9 g g(-1), while the OFP ranged from 8.2 to 13.9 g m(-3) and SOAP ranged from 0.18 to 0.36 g m(-3). By considering the coordinated chemical reactivity of O(3) and SOA, a comprehensive control index (CCI) was proposed for the control of key pollutant species that have multiplier effects on environment. For adsorption, trans-2-butene and p-xylene were the key co-control pollutants, while toluene and trans-2-butene were the most important for membrane and condensation + membrane control. A 50% emission reduction of the top two key species that emission account for 4.3% averagely will reduce O(3) by 18.4% and SOA by 17.9%" |
| Keywords: | *Air Pollutants/analysis Beijing *Environmental Pollutants *Volatile Organic Compounds/analysis China Particulate Matter/analysis Environmental Monitoring *Ozone Comprehensive control O(3) generation potential SOA generation Potential Service stations Vol; |
| Notes: | "MedlineHu, Wei Liang, Wenjun Huang, Yuhu Liu, Mingyu Yang, Hongling Ren, Biqi Yang, Tianyi eng England 2023/03/19 J Environ Manage. 2023 Jun 15; 336:117614. doi: 10.1016/j.jenvman.2023.117614. Epub 2023 Mar 16" |
