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Ozone pollution control strategies examined by Empirical Kinetics Modeling Approach over the Beaumont-Port Arthur region in Texas of USA
Atmospheric Pollution Research ( IF 4.5 ) Pub Date : 2020-10-05 , DOI: 10.1016/j.apr.2020.09.021
Sijie Ge , Sujing Wang , Jian Zhang , Qiang Xu , Thomas Ho

Ground-level ozone is harmful to both human health and ecological environment, which is formed by reactions of nitrogen oxides (NOx) and volatile organic compounds (VOCs) in the presence of sunlight. With the increasingly rigorous ozone standard in the U.S., it is important to examine ozone pollution control strategies to help air-quality management in a concentrated industrial region, such as Beaumont-Port Arthur (BPA) areas in Texas of USA. In this study, the method of Empirical Kinetics Modeling Approach (EKMA) associated with the comprehensive air quality modeling with extensions (CAMx) have been employed to demonstrate feasible air-quality control strategies to examine the effects of VOCs and NOx abatement on ozone concentration in the BPA area. Case studies included base case simulations as well as those with 25%, 50%, and 75% reductions of anthropogenic NOx and/or VOCs emissions in the BPA area, which were based on the TCEQ-provided meteorological and emission inventories for a high ozone episode. Simulation results indicated that NOx abatement is more effective than VOCs abatement in reducing ozone concentrations for BPA area, which suggestively belongs to the NOx-sensitive regime for ozone pollution. The average 8-hr ozone could be reduced 3.3%, 7.0% and 11.1%, respectively, by 25%, 50% and 75% of both NOx and VOCs emission abatement. The effect of pollutant abatement on ozone reduction is observed to be different at eight monitor stations in BPA region. Also, the nonlinear relationship between ozone and its precursors has been observed. This study could be helpful to provide scientific and technological support for the future development of air-quality management and ozone control strategies in a concentrated industrial region.



中文翻译:

通过经验动力学模型方法研究了美国德克萨斯州博蒙特港-亚瑟地区的臭氧污染控制策略

地面臭氧对人体健康和生态环境均有害,这是由氮氧化物(NO x)和挥发性有机化合物(VOC)在阳光下的反应形成的。随着美国日益严格的臭氧标准,重要的是要研究臭氧污染控制策略,以帮助集中工业区的空气质量管理,例如美国德克萨斯州的博蒙特-阿瑟港(BPA)地区。在这项研究中,经验动力学建模方法(EKMA)与具有扩展功能的综合空气质量建模(CAMx)相关的方法已被用来证明可行的空气质量控制策略来检查VOC和NO x的影响减少双酚A地区的臭氧浓度。案例研究包括基础案例模拟以及那些具有25%,50%,和人为NO的75个%减少X和/或挥发性有机化合物排放量的BPA区域,这是基于所述TCEQ提供的气象和排放清单用于高臭氧事件。仿真结果表明,NO X消减在降低臭氧浓度为BPA面积,这暗示地属于NO比挥发性有机化合物消减更有效X敏感的制度为臭氧的污染。平均8小时臭氧可以减小分别为3.3%,7.0%和11.1%,25%,50%和两个NO的75%X和减少VOCs排放。在BPA地区的八个监测站,观察到减少污染物对减少臭氧的影响是不同的。另外,已经观察到臭氧与其前体之间的非线性关系。这项研究可能有助于为集中工业区的空气质量管理和臭氧控制策略的未来发展提供科学和技术支持。

更新日期:2020-10-06
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