Article
Construction & Building Technology
Hsiang-Lin Yu, Tsang-Jung Chang
Summary: This study proposes a new 3D approach for modeling indoor airborne particulate matter (PM) concentration using cellular automata (CA) framework. By considering four major PM transport mechanisms, the CA approach achieves high accuracy and efficiency in numerical simulations, making it a useful tool for 3D simulations of indoor PM transport and distribution.
BUILDING AND ENVIRONMENT
(2022)
Article
Green & Sustainable Science & Technology
Doo Sung Choi, Jong-Sang Youn, Im Hack Lee, Byung Jin Choi, Ki-Joon Jeon
Summary: This study examines the environmental impact assessment by considering both FPM and CPM emissions to improve the accuracy of the air quality model. The results showed that including CPM in the analysis can lead to exceeding air quality standards in certain seasons, suggesting that PM2.5 models should include CPM for better evaluation accuracy.
Article
Environmental Sciences
T. Faria, V Martins, N. Canha, E. Diapouli, M. Manousakas, P. Fetfatzis, M. Gini, S. M. Almeida
Summary: Particulate matter (PM) pollution is a significant environmental concern due to its negative impact on human health. This study evaluates the daily exposure and inhaled dose of PM chemical compounds by integrating the concentrations measured in the micro-environments (MEs) where children spend most of their time. Results indicate that homes and schools contribute the most to children's daily exposure and inhaled dose. The study also highlights the high contribution of indoor sources to the organic fraction of particles, particularly in schools where mineral elements from dust resuspension and chalk usage stand out. Additionally, outdoor activities result in higher inhalation rates, leading to a higher contribution of outdoor particles to the inhaled dose. Overall, this study emphasizes the importance of indoor air quality in relation to children's exposure and health.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Paola Fermo, Begona Artinano, Gianluigi De Gennaro, Antonio Marco Pantaleo, Alessandro Parente, Fiorella Battaglia, Elena Colicino, Gianluca Di Tanna, Andouglas Goncalves da Silva Junior, Igor Gadelha Pereira, Gabriel Santos Garcia, Luiz Marcos Garcia Goncalves, Valeria Comite, Alessandro Miani
Summary: The study tested a commercial system as an air purifier and found that it significantly reduced PM and VOCs concentrations in the air by about 90% and over 50%, respectively.
ENVIRONMENTAL RESEARCH
(2021)
Article
Construction & Building Technology
Hsiang-Lin Yu, Tsang-Jung Chang
Summary: A novel cellular automata (CA) approach is developed for modeling indoor particulate matter (PM) concentration, which achieves similar accuracy as the Eulerian approach but with improved efficiency. Two parallelization procedures, mechanism parallelization and GPU-based cell parallelization, are proposed to further enhance the efficiency. The parallelized CA approach with both parallelization procedures can improve efficiency by up to 24-77 times, proving its potential as a useful tool for real-time 3D indoor PM distribution modeling.
BUILDING AND ENVIRONMENT
(2023)
Article
Environmental Sciences
Salem Algarni, Roohul Abad Khan, Nadeem Ahmad Khan, Nabisab Mujawar Mubarak
Summary: This study assessed indoor air quality in a residential building in Abha, Saudi Arabia during the COVID-19 lockdown, finding the need for improved ventilation in the bedroom, excessive PM concentrations with potential health risks, and the importance of developing indoor air quality guidelines for residential buildings in Saudi Arabia.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Construction & Building Technology
Min Young Kim, Yong Gi Jung, Jin Chul Park, Young Kwon Yang
Summary: The study found that forced resuspension is an effective method for reducing deposited particulate matter in indoor environments, with four-way airflow being more effective than one-way airflow. The orientation and velocity of the airflow have an impact on the resuspension and removal efficiency of particulates, with a flow velocity of 5 m/s or higher being necessary to resuspend deposited particulate matter.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Environmental Sciences
Swarnali Sanyal, Donald J. Wuebbles
Summary: The emissions from fossil fuel use not only affect climate but also have direct and indirect effects on air pollution. A more definite energy transformation is needed to reduce the adverse health effects caused by poor air quality. This study examines the possibility of a future where fossil fuel use has been extensively reduced and replaced by nonpolluting forms of energy. The results show that air quality improves significantly with respect to ozone and particulate pollution in the clean energy future scenario, emphasizing the importance of transforming energy production for air quality and human health.
Article
Geosciences, Multidisciplinary
Ana L. Duarte, Ismael L. Schneider, Paulo Artaxo, Marcos L. S. Oliveira
Summary: This study analyzes the spatiotemporal variation of atmospheric particulate matter and ozone in Barranquilla, Colombia and finds spatial and temporal variations between different monitoring stations and pollutants. The study also verifies differences in pollutant concentrations between dry and rainy seasons and the contribution of local and long-range transport pollution sources.
GEOSCIENCE FRONTIERS
(2022)
Article
Construction & Building Technology
Jean C. Rivera-Rios, Taekyu Joo, Masayuki Takeuchi, Thomas M. Orlando, Tracy Bevington, John W. Mathis, Cliffton D. Pert, Brandon A. Tyson, Tyler M. Anderson-Lennert, Joshua A. Smith, Nga Lee Ng
Summary: This study measured particle number and mass concentrations in aircraft cabins during July 2020 in Atlanta, with restaurants having the highest concentrations and in-flight aircraft cabins having the lowest.
Article
Green & Sustainable Science & Technology
Gregorio Sgrigna, Helder Relvas, Ana Isabel Miranda, Carlo Calfapietra
Summary: This study compares modeled and measured data to investigate the dynamics of PM10 in an urban-industrial area. The results show good agreement between the two datasets and suggest the use of a new factor, SF, to describe PM10 dispersion. The study also highlights the potential of tree leaves as a low-cost tool for evaluating urban environmental quality.
Article
Engineering, Environmental
Stephanie R. Schneider, Kristyn Lee, Guadalupe Santos, Jonathan P. D. Abbatt
Summary: As the climate warms, wildfires are increasing in size and frequency, impacting air quality by elevating concentrations of PM2.5, NO2, and CO. This study established an automated method to identify wildfire-influenced periods in urban areas and found that wildfires have a relatively greater impact on pollutants like CO and NO2 due to decreasing urban baseline concentrations over time.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Review
Materials Science, Multidisciplinary
Nana A. Amoah, Guang Xu, Yang Wang, Jiayu Li, Yongming Zou, Baisheng Nie
Summary: Researchers conducted a critical review of the current status of particle matter sensors and discussed the potential application of low-cost sensors in underground mines. They identified sources of sensor errors and proposed comprehensive calibration processes and evaluation protocols to improve sensor performance.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2022)
Article
Environmental Sciences
Yawei Qu, Ming Zhao, Tijian Wang, Shu Li, Mengmeng Li, Min Xie, Bingliang Zhuang
Summary: The rapid urbanization in China has led to increasingly serious air pollution. In this study, observations using Lidar and UAV were conducted in Nanjing during spring to study the vertical distribution and correlation of ozone and particulate matter. The results showed that ozone concentration is highest in the upper boundary layer, while aerosol extinction coefficient decreases with height. Below 650 m, ozone and aerosol are negatively correlated, while above the boundary layer, they are usually positively correlated, regardless of the presence of particulate pollution.
Article
Environmental Sciences
Iara da C. Souza, Mariana Morozesk, Adrislaine S. Mansano, Vitor A. S. Mendes, Vinicius C. Azevedo, Silvia T. Matsumoto, Michael Elliott, Magdalena Monferran, Daniel A. Wunderlin, Marisa N. Fernandes
Summary: This study examines the composition, size, and dispersion of settleable particulate matter (SePM) in water, revealing high levels of metal elements, especially in areas influenced by the steel and iron industry. Agglomeration of nanoparticles and dissociation in water contribute to water pollution effects from SePM.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)