气候变化领域集成服务门户(CCPortal): NOx depolluting performance of photocatalytic materials in an urban area - Part II: Assessment through Computational Fluid Dynamics simulations

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DOI	10.1016/j.atmosenv.2020.118091
	NOx depolluting performance of photocatalytic materials in an urban area - Part II: Assessment through Computational Fluid Dynamics simulations
	Sanchez B.; Santiago J.L.; Martilli A.; Palacios M.; Núñez L.; Pujadas M.; Fernández-Pampillón J.
发表日期	2021
ISSN	1352-2310
卷号	246
英文摘要	Photocatalytic materials are proposed as a mitigation strategy of urban air pollution because of its deposition feature. This study aims at evaluating their effect on NO2 concentrations in an urban environment under real atmospheric conditions through Computational Fluid Dynamics (CFD) simulations. A comprehensive study is performed to determine the potential of photocatalytic materials to remove NO2 at pedestrian level taking into account the variability of wind speed, traffic emissions and the photoactive area in an urban environment. The deposition velocity used to model the sink effect of a photoactive surface is derived from laboratory data and its applicability to outdoor conditions is proved through microscale simulations. The CFD simulation performed to assess the impact of a photocatalytic material on ambient pollutants in a real urban scenario is evaluated against the measurements presented in Part I (Fernández-Pampillón et al., 2020). Results show that the application of photocatalytic materials in an urban environment yield a minimal reduction in NO2 concentrations below 1% under the studied atmospheric conditions. In a hypothetical scenario, in which the photoactive area is extended to an entire neighbourhood, small decrease of NO2 concentrations below 2% is obtained under the daytime prevailing atmospheric conditions of the area of interest. Finally, the reduction of NO2 under several atmospheric conditions results to be mainly dominated by wind flow and NOx emissions in the study street. © 2020 Elsevier Ltd
英文关键词	Air pollution; Deposition; Nitrogen oxides; Urban planning; Wind; Atmospheric conditions; Computational fluid dynamics simulations; Deposition features; Deposition velocities; Microscale simulation; Mitigation strategy; Photocatalytic materials; Urban air pollution; Computational fluid dynamics
语种	英语
来源期刊	Atmospheric Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169038
作者单位	Department of Geography, National University of Singapore, Singapore; Research Center for Energy, Environment and Technology (CIEMAT), Madrid, Spain; The National Distance Education University (UNED), Madrid, Spain
推荐引用方式 GB/T 7714	Sanchez B.,Santiago J.L.,Martilli A.,et al. NOx depolluting performance of photocatalytic materials in an urban area - Part II: Assessment through Computational Fluid Dynamics simulations[J],2021,246.
APA	Sanchez B..,Santiago J.L..,Martilli A..,Palacios M..,Núñez L..,...&Fernández-Pampillón J..(2021).NOx depolluting performance of photocatalytic materials in an urban area - Part II: Assessment through Computational Fluid Dynamics simulations.Atmospheric Environment,246.
MLA	Sanchez B.,et al."NOx depolluting performance of photocatalytic materials in an urban area - Part II: Assessment through Computational Fluid Dynamics simulations".Atmospheric Environment 246(2021).