Preprint Review Version 1 Preserved in Portico This version is not peer-reviewed

Mitigating Built Environment Air Pollution by Green Systems: An In-Depth Review

Version 1 : Received: 26 June 2024 / Approved: 26 June 2024 / Online: 26 June 2024 (14:20:49 CEST)

How to cite: Vitaliano, S.; Cascone, S.; D'Urso, P. R. Mitigating Built Environment Air Pollution by Green Systems: An In-Depth Review. Preprints 2024, 2024061855. https://doi.org/10.20944/preprints202406.1855.v1 Vitaliano, S.; Cascone, S.; D'Urso, P. R. Mitigating Built Environment Air Pollution by Green Systems: An In-Depth Review. Preprints 2024, 2024061855. https://doi.org/10.20944/preprints202406.1855.v1

Abstract

Air pollution is a critical issue impacting urban environments, leading to severe health problems and environmental degradation. This comprehensive review examines the potential of green systems—specifically green walls, active green walls, and urban greenery systems—to mitigate atmospheric pollutants such as particulate matter (PM), volatile organic compounds (VOCs), and carbon dioxide (CO2). By systematically analyzing 44 recent studies, the review highlights the pollutant capture efficiency of various green technologies and plant species in both indoor and outdoor settings. Active green walls, particularly those utilizing plant species such as Chlorophytum comosum and Sansevieria trifasciata, were found to be highly effective, with VOC reduction efficiencies up to 96.34%, PM reductions by 65.42%, and CO2 reduction rates reaching 4.8% under optimal conditions. The review identifies key strengths in current research, including diverse experimental setups and the use of sophisticated measurement techniques, but also notes significant limitations such as variability in experimental conditions and a lack of long-term performance data. The study underscores the importance of proper maintenance to sustain green systems' efficacy and highlights the potential issue of pollutant resuspension, which remains under-researched. Practical implications for urban planning are discussed, advocating for the integration of effective green systems into urban infrastructure to enhance air quality and public health. Recommendations for future research include the need for standardized metrics, long-term studies, economic feasibility analyses, and real-world validation of simulation models to better understand and optimize green systems for urban air pollution mitigation.

Keywords

Green Walls; Active Green Walls; Urban Greenery Systems; Particulate Matter (PM); Volatile Organic Compounds (VOCs); Carbon Dioxide (CO2); Urban Air Quality; Environmental Mitigation

Subject

Engineering, Architecture, Building and Construction

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