Adsorption of typical gasoline vapor emitted from service stations by commercial activated carbon:static/dynamic adsorption and kinetics simulation  

作　　者：Wei Hu Quanming Liang Dan Lu Beibei Li Biqi Ren Qingye Luan Jia Liu Wenjun Liang Yuhu Huang 

机构地区：[1]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 [2]Key Laboratory of Beijing on Regional Air Pollution Control,Faculty of Environment and Life,Beijing University of Technology,Beijing 100124,China [3]Institute of Urban Safety and Environmental Science,Beijing Academy of Science and Technology,Beijing 100054,China

出　　处：《Frontiers of Environmental Science & Engineering》2025年第3期87-98,共12页环境科学与工程前沿(英文)

基　　金：supported by the Project of Beijing Municipal Research Institute of Eco-Environmental Protection(China)(JZ2022-012);the National Key Research and Development Program of China(2018YFC1903100);the BJAST Young Scholar Programs(China)(24CE-YS-03).

摘　　要：Gasoline vapor emissions from service stations significantly affect urban atmospheric.Despite the research on the mechanisms and effectiveness of gasoline vapor removal is limited,this study innovatively investigates the static and dynamic adsorption of xylene—a typical gasoline vapor and one of the most active secondary organic aerosol(SOA)species—by commercial activated carbon(AC).The results showed that the saturation static adsorption capacity(Q_(e))of 12 ACs varied from 0.9 to 870.7 mg/g,which correlated with the specific surface area(SSA)and pore volume.Among them,11#and 12#ACs were identified as the most effective adsorbents for typical gasoline vapor removal.The maximum dynamic Q_(e) increased from 301.5 to 414.3 mg/g when the initial xylene concentration rose from 918 to 2008 mg/m^(3) for 11#AC,and from 201.4 to 406.2 mg/g when the initial xylene concentration increased from 589 to 2120 mg/m^(3) for 12#AC.These findings implied a direct correlation between higher initial xylene concentrations and greater dynamic Q_(e) values,with static Q_(e) values surpassing dynamic values.The adsorption kinetics simulation were analyzed by the pseudo-first-order(PFO)and pseudo-second-order(PSO)kinetics.The kinetics results demonstrated that the PFO was more effective in characterizing the adsorption of xylene onto ACs(R2>0.989),indicating that the adsorption of typical gasoline vapor by ACs primarily involves physical adsorption.The findings of static/dynamic adsorption and kinetics provide valuable guidance for practical applications of gasoline vapor removal in service stations.

关 键 词：Activated carbon Gasoline vapor XYLENE Dynamic adsorption Breakthrough curve 

分 类 号：X511[环境科学与工程—环境工程]