KMITL

Permanent URI for this communityhttps://dspace.kmitl.ac.th/handle/123456789/1

Browse

Settings

Subject: search.filters.subject.Air quality

Search Results

Now showing 1 - 4 of 4
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Sustainable Air Purifiers for Thai Smart Cities: Integrating Circular Economy and Public Health in Municipal Innovation
    (2026-06-01)
    Taghipour, Amirhossein
    ;
    Saengnoree, Amnuay
    ;
    Sangmanee, Woranat
    Rapid urbanization and economic growth in Thailand have intensified urban air-quality challenges, especially PM2.5 pollution associated with agricultural burning, industrial emissions, and traffic congestion. Municipal governments are therefore exploring technological interventions that can complement conventional emission-control policies in the transition toward healthier smart cities. One promising approach is the deployment of sustainable outdoor air-purifier towers equipped with high-speed fans, jet scrubbers, and IoT-based monitoring systems. Early pilots, including the MQDC FahSai Mini tower, have demonstrated substantial dust-reduction potential and real-time data integration with public air-quality platforms. This study develops an interdisciplinary framework that connects public health, circular economy principles, technology adoption, and sustainable urban design. We examine how environmental awareness, perceived effectiveness, social influence, perceived cost, health anxiety, and value co-creation shape adoption intention and behavior toward municipal air-purification systems in Bangkok, Chiang Mai, Khon Kaen, and Phuket. Using mixed methods, including interviews and survey data from 320 stakeholders, residents, and officials, and analyzing the data through CFA and SEM, the study finds that environmental awareness and perceived effectiveness positively influence adoption, while perceived cost reduces it. Value co-creation emerges as the strongest driver of adoption intention and mediates the role of social influence. Scenario analysis further indicates that the deployment of 10–15 purifier towers could reduce PM2.5 by approximately 30–40% and generate meaningful health-related economic benefits. The discussion now more explicitly addresses the end-of-life management of saturated filter media, the role of multi-level governance and redistributive financing for urban equity, and the importance of addressing technological anxiety to secure a durable social license for deployment.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Three-dimensional air quality assessment simulations inside sky train platform with airflow obstacles on heavy traffic road
    (2018-07-01)
    Suebyat, Kewalee
    ;
    Pochai, Nopparat
    Air pollutant levels in Bangkok are generally high in street tunnels. They are particularly elevated in almost closed street tunnels such as an area the Bangkok sky train platform with high traffic volume where dispersion is limited. This area has no air quality measurement stations even though there is a high percentage of people living around this vicinity. We are interested to conduct a research the Bangkok sky train platform due to the traffic density and enormous polluted areas. Therefore, we proposed a numerical modeling of air pollution concentration in sky train platform with airflow obstacles on heavy traffic road as an approximated solution of the three-dimensional advection-diffusion equation by using the finite difference methods. Our research presentation is based on how air pollution model depends on the flow of air pollution and wind directions including the governing equation of the corresponding three-dimensional advection-diffusion equation is presented. This also includes the initial condition and boundary conditions of traffic and polluted areas. In order to illustrate the performance of the model, the numerical experiments are presented. The comparison between the two methods and the simulations of air pollution control are proposed. The three-dimensional advection-diffusion equation is solved by using the Forward Time, Centered Space (FTCS) and Forward Time, Backward Space (FTBS) schemes. The results obtained indicate that the FTCS method provides a better result than FTBS method. Furthermore, the proposed experimental variations of the boundary condition in the entrance gate do affect the air pollutant concentration of each floor.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    A numerical simulation of a three-dimensional air quality model in an area under a Bangkok sky train platform using an explicit finite difference scheme
    (2017-11-01)
    Suebyat, Kewalee
    ;
    Pochai, Nopparat
    One of the air pollution problems in areas under Bangkok sky train platforms are caused by the pollutant coming from the entrance to the tunnel. It increases the concentration of pollutant. This affects the well-being of humans and the environment. In this research, the governing equation of the air quality model in a considered area is a three-dimensional advection-diffusion equation with time dependence. A finite difference technique is employed to approximate the solution of the governing equation. This model is solved by using an explicit forward difference in time and central difference in space (FTCS). We consider the wind inflow in two cases: there is wind inflow only in x-direction and there are wind inflow in x- direction and y-direction. In addition, we added obstacles such as the columns along the middle into the tunnel. The results of the model are satisfactory. It will be able to be implemented on a problem of air pollution control in a more complicated tunnel.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Chemical characterization of gaseous species from the pyrolysis process using scrap tires
    (2013-01-01)
    Pongnailert, S.
    ;
    Supadit, T.
    ;
    Poungsuk, P.
    ;
    Pongpiachan, S.
    Particle exposure can lead to a variety of health effects. For example, numerous studies link particle levels to increased hospital admissions and emergency room visits - and even to death from heart or lung diseases. Scrap tire combustion releases several toxic air pollutants. This study assessed the generation of H<inf>2</inf>, N<inf>2</inf>, CO, H<inf>2</inf>S and nine aliphatic compounds, namely CH4 (Methane), C<inf>2</inf>H<inf>2</inf> (Acetylene), C<inf>2</inf>H<inf>4</inf> (Ethylene), C<inf>2</inf>H<inf>6</inf> (Ethane), C<inf>3</inf>H<inf>6</inf> (Propylene), C<inf>3</inf>H<inf>8</inf> (Propane), C<inf>4</inf>H<inf>8</inf> (Butene), C<inf>4</inf>H<inf>10</inf> (Butane), C<inf>5</inf>H<inf>12</inf> (Pentane) generated in a used-tire pyrolysis process and the aliphatics removal by a wet scrubber (WSB) and a flare. CH<inf>4</inf>, H<inf>2</inf>, N<inf>2</inf> and C<inf>2</inf>H<inf>6</inf> were found to be major gaseous species in pyrolysis emissions with the percentage contributions to total sum of gaseous species of 33.18%, 15.62%, 12.23% and 8.69% respectively. © 2013 WIT Press.