PMID- 35605835 OWN - NLM STAT- MEDLINE DCOM- 20220623 LR - 20220623 IS - 1873-6424 (Electronic) IS - 0269-7491 (Linking) VI - 307 DP - 2022 Aug 15 TI - Air pollutant emission and reduction potentials from the sintering process of the iron and steel industry in China in 2017. PG - 119512 LID - S0269-7491(22)00726-6 [pii] LID - 10.1016/j.envpol.2022.119512 [doi] AB - The iron and steel industry (ISI) is one of the most energy-intensive industries in China, which makes a substantial contribution to the emissions of air pollutants. Among the various manufacturing processes, sintering is the major emitting process, which shares over half of the emissions of sulfur dioxide (SO(2)), nitrogen oxide (NO(x)) and particulate matter (PM) for the entire industry. In this study we made a comprehensive evaluation of the air pollutant emissions from the sintering process of China's ISI in 2017 based on the Continuous Emission Monitoring System (CEMS) database and estimated the future reduction potentials. We found that there was a general decreasing trend of emission concentrations in the sintering flue gas in response to the strengthened emission control policies, but the mild increase of the oxygen content in the second half of the year flattened the decreasing trend, indicating the necessity for simultaneous control of the oxygen content in the flue gas. Despite the relative high standard-reaching rates of 90% to the emission concentration limits in GB 28662-2012, the standard-reaching rates to the ultra-low emission standards were only 12%, 40% and 27% for NO(x), SO(2) and PM respectively, with the lowest value mostly occurred in the western provinces. In 2017, the NO(x), SO(2) and PM emissions from the sintering process were 378.6 kt, 169.0 kt and 51.9 kt, respectively. If the ultra-low emission standards were met, the corresponding NO(x), SO(2) and PM emissions would decrease by 69.9%, 52.9%, and 56.4% respectively, illustrating large emission reducing potentials by achieving the ultra-low emission standards. CI - Copyright (c) 2022. Published by Elsevier Ltd. FAU - Liu, Jun AU - Liu J AD - Department of Environmental Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China; Key Laboratory of Ecological Environment and Information Atlas Fujian Provincial University, Putian University, Putian, 351100, China. FAU - Wang, Si AU - Wang S AD - Department of Environmental Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China. FAU - Yi, Honghong AU - Yi H AD - Department of Environmental Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China; Key Laboratory of Beijing Municipal Industry Pollutant Resources Processing, Beijing, 100083, China. Electronic address: yhhtxl@163.com. FAU - Tang, Xiaolong AU - Tang X AD - Department of Environmental Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China; Key Laboratory of Beijing Municipal Industry Pollutant Resources Processing, Beijing, 100083, China. FAU - Li, Zhangliang AU - Li Z AD - Key Laboratory of Ecological Environment and Information Atlas Fujian Provincial University, Putian University, Putian, 351100, China. FAU - Yu, Qingjun AU - Yu Q AD - Department of Environmental Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China; Key Laboratory of Beijing Municipal Industry Pollutant Resources Processing, Beijing, 100083, China. FAU - Zhao, Shunzheng AU - Zhao S AD - Department of Environmental Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China; Key Laboratory of Beijing Municipal Industry Pollutant Resources Processing, Beijing, 100083, China. FAU - Gao, Fengyu AU - Gao F AD - Department of Environmental Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China; Key Laboratory of Beijing Municipal Industry Pollutant Resources Processing, Beijing, 100083, China. FAU - Zhou, Yuansong AU - Zhou Y AD - Department of Environmental Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China; Key Laboratory of Beijing Municipal Industry Pollutant Resources Processing, Beijing, 100083, China. FAU - Wang, Yaxin AU - Wang Y AD - Department of Environmental Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China. LA - eng PT - Journal Article DEP - 20220520 PL - England TA - Environ Pollut JT - Environmental pollution (Barking, Essex : 1987) JID - 8804476 RN - 0 (Air Pollutants) RN - 0 (Particulate Matter) RN - 12597-69-2 (Steel) RN - E1UOL152H7 (Iron) RN - S88TT14065 (Oxygen) SB - IM MH - *Air Pollutants/analysis MH - *Air Pollution/analysis/prevention & control MH - China MH - Environmental Monitoring MH - Iron MH - Oxygen MH - Particulate Matter/analysis MH - Steel OTO - NOTNLM OT - Emission concentration OT - Oxygen content OT - Sintering flue gas OT - Standard-reaching rate OT - Ultra-low emission standard EDAT- 2022/05/24 06:00 MHDA- 2022/06/24 06:00 CRDT- 2022/05/23 19:26 PHST- 2022/02/23 00:00 [received] PHST- 2022/05/10 00:00 [revised] PHST- 2022/05/17 00:00 [accepted] PHST- 2022/05/24 06:00 [pubmed] PHST- 2022/06/24 06:00 [medline] PHST- 2022/05/23 19:26 [entrez] AID - S0269-7491(22)00726-6 [pii] AID - 10.1016/j.envpol.2022.119512 [doi] PST - ppublish SO - Environ Pollut. 2022 Aug 15;307:119512. doi: 10.1016/j.envpol.2022.119512. Epub 2022 May 20.