Assessment of urban air pollution related to potential nanoparticle emission from photocatalytic pavements
| Autor: | Eva Jimenez-Relinque, Roman Nevshupa, Maria Grande, Marta Castellote, Emilio Martinez |
|---|---|
| Přispěvatelé: | European Commission |
| Rok vydání: | 2020 |
| Předmět: |
Environmental Engineering
0208 environmental biotechnology Air pollution Nanoparticle 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law medicine.disease_cause 01 natural sciences Air Pollution medicine Waste Management and Disposal 0105 earth and related environmental sciences Aerosols Air Pollutants Pilot scale test Pilot scale Environmental engineering Dust General Medicine 020801 environmental engineering Aerosol Photocatalytic pavement Nanoparticle aerosol Photocatalysis Environmental science Nanoparticles Particulate Matter Air pollution prevention and treatment Urban environment Aerosol sampling Particulate contamination Environmental Monitoring |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 1095-8630 |
| Popis: | @ 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ The main objective was to evaluate whether wearing and weathering of nanofunctionalized photocatalytic pavement in real urban environment can lead to undesirable emission of potentially toxic nanoparticle aerosols in urban air. The photocatalytic material was thoroughly tested before its application for conformity criteria in terms of photocatalytic effectiveness, intrinsic performance and undesired secondary effects, and then applied on a pilot scale in downtown Madrid. The aerosol monitoring on the pilot street before the coating applications as well as on the neighbouring streets during 10 months was used as a benchmark for evaluation of spatial and temporal variations. Analysis of the experimental data did not reveal any statistically significant variations in the aerosol concentrations on the pilot street in comparison with the benchmark. The concentration of Ti-containing particles was assessed by aerosol sampling and yielded values below 10 cm−3 that is more than three orders of magnitude below the toxicological limits. A theoretical model was developed to assess the upper bound of nanoparticle aerosol concentration in air. These findings indicated that photocatalytic pavement materials, which comply with conformity criteria under laboratory tests, can have low impact on the particulate contamination of urban air. All of the sources of funding for the work described in this publication are acknowledged below: Program LIFE+ of the European Union, project LIFE PHOTOSCALING, LIFE 13/ENV/ES/001221, http://www.life-photoscaling.eu/. |
| Databáze: | OpenAIRE |
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