title: Current and future emissions of primary pollutants from coal-fired power plants in Shaanxi, China.
abstract: A high-resolution inventory of primary atmospheric pollutants from coal-fired power plants in Shaanxi in 2012 was built based on a detailed database compiled at unit level involving unit capacity, boiler size and type, commission time, corresponding control technologies, and average coal quality of 72 power plants. The pollutants included SO2, NOx, fine particulate matter (PM2.5), inhalable particulate matter (PM10), organic carbon (OC), elemental carbon (EC), carbon monoxide (CO) and non-methane volatile organic compounds (NMVOC). Emission factors for SO2, NOx, PM2.5and PM10were adopted from standardized official promulgation, supplemented by those from local studies. The estimated annual emissions of SO2, NOx, PM2.5, PM10, EC, OC, CO and NMVOC were 152.4, 314.8, 16.6, 26.4, 0.07, 0.27, 64.9 and 2.5kt, respectively. Small units (<100MW), which accounted for ~60% of total unit numbers, had less coal consumption but higher emission rates compared to medium (≥100MW and <300MW) and large units (≥300MW). Main factors affecting SO2, NOx, PM2.5and PM10emissions were decontamination efficiency, sulfur content and ash content of coal. Weinan and Xianyang were the two cities with the highest emissions, and Guanzhong Plain had the largest emission density. Despite the projected growth of coal consumption, emissions would decrease in 2030 due to improvement in emission control technologies and combustion efficiencies. SO2and NOxemissions would experience significant reduction by ~81% and ~84%, respectively. PM2.5, PM10, EC and OC would be decreased by ~43% and CO and NMVOC would be reduced by ~16%.
authors.affiliation: College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Xu
authors.affiliation: Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Engineering Technology Research Center of Environmental Cleaning Materials, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science& Technology, 219 Ningliu Road, Nanjing 210044, China.
authors.forename: Jianlin
authors.initials: J
authors.lastname: Hu
authors.affiliation: Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Engineering Technology Research Center of Environmental Cleaning Materials, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science& Technology, 219 Ningliu Road, Nanjing 210044, China; Department of Civil Engineering, Texas A&M University, College Station, TX 77843, USA.
authors.forename: Qi
authors.initials: Q
authors.lastname: Ying
authors.affiliation: College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, China.
authors.forename: Hongke
authors.initials: H
authors.lastname: Hao
authors.affiliation: College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, China. Electronic address: wangdx66@126.com.
authors.forename: Dexiang
authors.initials: D
authors.lastname: Wang
authors.affiliation: Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Engineering Technology Research Center of Environmental Cleaning Materials, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science& Technology, 219 Ningliu Road, Nanjing 210044, China; Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, LA 70803, USA. Electronic address: hlzhang@lsu.edu.
authors.forename: Hongliang
authors.initials: H
authors.lastname: Zhang
keywords: Coal-fired power plant; Decontamination efficiency; Emission inventory; Reduction; Shaanxi