Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai, 200241, China; Laboratory of Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China.
Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai, 200241, China.
Environ Pollut. 2021 Nov 1;288:117810. doi: 10.1016/j.envpol.2021.117810. Epub 2021 Jul 19.
China has been famous for its porcelains for millennia, and the combustion processes of porcelain production emit substantial amounts of air pollutants, which have not been well understood. This study provided firsthand data of air pollutant emissions from biomass porcelain kilns. The emission factor of PM was 0.95 ± 1.23 g/kg during the entire combustion cycle, lower than that of biomass burning in residential stoves and coal burning in brick kilns, attributed to the removal effects of the long-distance transport in dragon kilns. The temporal trend of particle pollutants, including particulate matters (PMs) and particulate polycyclic aromatic hydrocarbons (PAHs) (low at ignition phase and high at the end) again indicated the removal effects of the special structure, while gaseous pollutants, such as gaseous PAHs, exhibited the opposite result. The GWC was estimated as 1.4 × 10 and 0.5 × 10 kg COe/yr for the scenarios in which 50% and 100% of the wood was renewable, respectively. The GWC of dragon kilns is nearly equal to that of 745 households using wood-fueled stoves. These results indicate the necessity of pollution controls for biomass porcelain kilns to estimate the emission inventory and climate change.
中国的瓷器闻名于世已有数千年，而瓷器生产的燃烧过程会排放大量的空气污染物，这些污染物尚未得到很好的理解。本研究提供了生物质瓷窑空气污染物排放的一手数据。在整个燃烧周期中，PM 的排放因子为 0.95±1.23 g/kg，低于住宅炉灶燃烧生物质和砖窑燃烧煤炭的排放因子，这归因于龙窑长途运输的去除效果。颗粒物污染物（PMs 和多环芳烃（PAHs））的时间趋势（点火阶段较低，结束阶段较高）再次表明了特殊结构的去除效果，而气态污染物（如气态 PAHs）则表现出相反的结果。如果 50%和 100%的木材是可再生的，那么情景下的 GWC 分别估计为 1.4×10 和 0.5×10 kg COe/yr。龙窑的 GWC 几乎等于 745 户使用薪柴炉灶的家庭的 GWC。这些结果表明，需要对生物质瓷窑进行污染控制，以估算排放清单和气候变化。
