Nokpho, P., Tanprasert, S., Chalermsinsuwan, B., Piemjaiswang, R. (2026) Journal of Environmental Chemical Engineering, 14 (5), pp. 124274.
Posts tagged as “Ratchanon Piemjaiswang”
Manchan, W., Piemjaiswang, R., Rungnim, C., Sukmas, W., Rodthongkum, N. (2026) Microchemical Journal, 228, pp. 119182.
Electrostatic effects influence hydrodynamics in circulating fluidized bed (CFB) risers, particularly particle accumulation near the wall. In this study, a computational fluid dynamics (CFD) model incorporating dynamic electrostatic charge transport is developed and combined with a 2 4…
Kamsuwan, C., Wang, X., Piemjaiswang, R., Piumsomboon, P., Manatura, K., Pratumwal, Y., Otarawanna, S., Chalermsinsuwan, B. (2026) Applied Thermal Engineering, 298, pp. 130991.
Rivers are key pathways for plastic pollution to the ocean, yet global river export models remain highly uncertain due to catchment diversity and the complexity of plastic transport. We examined the critical river-ocean interface using a comparative dataset…
Lumphoon, K. N., Nuntang, S., Nimmanterdwong, P., Manatura, K., Piemjaiswang, R., Chalermsinsuwan, B. (2026) Fuel, 406, pp. 136977.
• Microplastics separation in hydrocyclones was simulated using three-phase CFD. • Geometric scale of the hydrocyclone and the velocity of the inlet were investigated. • As the hydrocyclone size decreased, the recovery of microplastics increased. • Higher inlet…
Adnan, M., Kampeewichean, C., Tanprasert, S., Korkerd, K., Piumsomboon, P., Tipratchadaporn, S., Chalermsinsuwan, B., Piemjaiswang, R. (2026) Particuology, 108, pp. 99-112.
Flow-accelerated corrosion (FAC) has regained attention due to recent findings of its occurrence in the harps of horizontal flue gas flow heat recovery steam generators (HRSGs), leading to unplanned outages and significant financial losses. Conventionally, a mass transfer-based…
This study presents an intelligent plant-wide decision-support framework, MIRA (Multi-objective Integrated Resource Allocation), which integrates deep learning and thermodynamic process modeling with particle swarm optimization (PSO) to optimize hydrochar production and energy recovery from diverse waste streams. Its…
Kamsuwan, C., Wang, X., Seng, L. P., Xian, C. K., Piemjaiswang, R., Piumsomboon, P., Manatura, K., Pratumwal, Y., Otarawanna, S., Chalermsinsuwan, B. (2025) International Journal of Heat and Mass Transfer, 242, pp. 126865.
Flow accelerated corrosion remains an active damage in heat recovery steam generators. A recent case took place in tubes downstream an inlet header of a high-pressure economizer harp after six years of operation. The harp includes an inlet…
• Potential benefits of carbon-black as carbon-black based nanofluid with water are presented. • Thermophysical properties of carbon-black based nanofluid are measured and correlated. • CFD with temperature-dependent thermophysical properties predicts more accurate results. • At optimal conditions,…
Models estimate up to 3 million metric tons of river plastic waste flowing into the world's ocean every year. All ocean-bound rivers endure tidal impact to some degree, but there is a lack of data on the resulting…
Thiemsakul, D., Piemjaiswang, R., Sema, T., Piumsomboon, P., Chalermsinsuwan, B. (2025) Lecture Notes in Mechanical Engineering, pp. 88-96.
Sornvichai, A., Adnan, M., Ahmad, N., Piemjaiswang, R., Piumsomboon, P., Chalermsinsuwan, B. (2024) Journal of Environmental Chemical Engineering, 12 (6), pp. 114247.
Infection prevention and control is a crucial element in providing a safe environment for dental clinics and reducing airborne infections risks during dental procedures. In response to the prevailing COVID-19 situations, the clinical space in the dental school…
Flow accelerated corrosion (FAC), is still prevail in power plants piping components and is driven by variables in hydrodynamics, water chemistry and material composition groups. Amongst these factors, flow hydrodynamics play a major role as FAC is a…
Nowadays microplastics have become a significant environmental concern, impacting both freshwater and marine ecosystems. In response to this issue, extensive research has been conducted to explore methods for separating microplastics from water. One area of investigation involves the…
Tawatbundit, P., Nimmanterdwong, P., Piemjaiswang, R., Sema, T., Piumsomboon, P., Chalermsinsuwan, B. (2024) Springer Proceedings in Earth and Environmental Sciences, pp. 127-136.
Combining biomass fuel with coal in circulating fluidized bed (CFB) boilers is attractive as the increasing of energy demand. The characteristics of biomass/coal co-firing in the industrial boiler are then investigated using computational fluid dynamics (CFD). In this…
Polymer-based heat exchangers can offer a promising solution for environmental sustainability due to their low energy consumption. The incorporation of microchannels and nanofluids further enhances the heat transfer performance of these heat exchangersIn this study, a polymer-based microchannel…
Ethanol is becoming the important renewable energy sources in the world which produces from carbohydrate resources. The raw material selection is the important procedure for real industrial production. The effect of biomass structural composition in feedstock on ethanol…
The application of core annular flow (CAF) has become an interesting solution in transporting heavy oil through pipeline because of its energy reduction and cost efficiency. At the same time, the CAF in pipe with hydraulic fittings and…
Energy demand tends to increase by 80% in 2050 due to the rapid growth of the global population. However, the energy resources rapidly decrease for responding to the global need. Many previous researchers suggest the ideas for solving…
Dianita, C., Piemjaiswang, R., Chalermsinsuwan, B. (2023) Iranian Journal of Science and Technology, Transactions of Mechanical Engineering, 47 (3), pp. 941-958.
Previous work about CAF through a T-pipe reported that CAF stability could not be maintained after passing the intersection. The current CFD study was expected to propose a strategy to recover the stability of CAF in a horizontal…
Currently, the air pollution and the respiratory disease problems that affect human health are increasing rapidly. Hence, there is attention for trend prediction of the located deposition of inhaled particles. In this study, Weibel's based human airway model…
During the gas transportation, the pressure differential along the pipeline leads to the formation of unwanted impurities including elemental sulfur. The elemental sulfur formation is interestingly limited by the solubility of sulfur in the vapor phase. Our work…
Waste heat utilization has been prioritized especially in various industries and sectors. Many researchers have developed heat recovery processes by designing suitable waste heat recovery units (WRU), such as heat exchangers, using water as a coolants to receive…
In river plastic pollution research little is known about the detailed pathways and interruptions that occur during the journey of macroplastic debris (>5 cm) from land to sea. Data on fine-scale and high-accuracy transport trajectories and cycles of…
. Every year, as many as 4.3 million children per year experience moderate respiratory diseases and several million more suffer from acute respiratory diseases due to air pollution. As policymakers, the public and scientists pay more attention to…
Air quality has a significant impact on the health of the people especially inside buildings that use closed air conditioning systems. When the indoor air quality level is below the standard but the people are unable to detect…
Currently, many industries aim to improve the heat transfer system to reduce cost and carbon emission. For improving heat exchanger apparatus, the convectional working fluid such as water can be replaced by hybrid nanofluid. The hybrid nanofluid is…
Internally circulating fluidized bed reactor (ICFB) is the reactor that combines the conventional circulating fluidized bed (CFB) reactor system, including riser, downer, loop seal and cyclones, into a single compact reactor column. The ICFB reactor column is separated…
Dianita, C., Piemjaiswang, R., Chalermsinsuwan, B. (2021) Chemical Engineering Research and Design, 176, pp. 279-295.
Piemjaiswang, R., Charoenchaipet, J., Saelau, T., Piumsomboon, P., Chalermsinsuwan, B. (2021) Brazilian Journal of Chemical Engineering, 38 (1), pp. 21-31.
Soanuch, C., Korkerd, K., Phupanit, J., Piemjaiswang, R., Piumsomboon, P., Chalermsinsuwan, B. (2021) Korean Journal of Chemical Engineering, 38 (3), pp. 540-551.
BACKGROUND Atherosclerosis is a degenerative disease of the arterial wall. It results in the formation of progressively growing plaque lesions that can harden and narrow their host arteries. Current computational models of the inflammatory process that govern atherosclerosis…
The blood viscosity is correlated with the risk of developing atherosclerotic lesions. The environmental factor can play an important role in altering hemodynamics and low-density lipoprotein (LDL) especially the ambient temperature. The greenhouse gas emission from energy or…
The concern about the environment is the driving force to reduce the CO 2 emission. The main source of CO2 emission is from the flue gas from combustion process. The K 2 CO 3 solid sorbent in circulating…
Internally circulating fluidized bed reactor (ICFB) is the system with combining the function of reactor, cyclones and loop seal of a conventional circulating fluidized bed reactor (CFB) into a single reactor column. In this type of reactor, the…
The particulate matter (PM) is one of the harmful pollutants that causing an impact on human health. To study the significance of those small particle properties, the research had been conducted using three-dimensional computational fluid dynamics with the…
Sornvichai, A., Piemjaiswang, R., Piumsomboon, P., and Chalermsinsuwan, B. The 29th Thai Institute of Chemical Engineering and Applied Chemistry Conference (TIChE2020), Bangkok, Thailand (2020).
Piemjaiswang, R., and Chalermsinsuwan, B. 2020 Asia Conference on Renewable Energy And Environmental Engineering (AREEE 2020), Bangkok, Thailand (2020).
Thiemsakul, D., Piemjaiswang, R., Piumsomboon, P., and Chalermsinsuwan, B. 2020 Asia Conference on Renewable Energy And Environmental Engineering (AREEE 2020), Bangkok, Thailand (2020).
The sulfur dioxide (SO2) and carbon dioxide (CO2) emissions from fuel combustion in a coal-fired power plant constitute a significant source of damage to the environment. Therefore, SO2 and CO2 should be captured before being released into the…
Aerosols have been widely used in the treatment of certain airway diseases. With different breathing conditions of patients, the flow pattern might not cause the aerosol to transport and deposit on the desired bronchial section. In this study,…
Piemjaiswang, R., Gabriel, S. A., Ding, Y., Feng, Y., Piumsomboon, P., and Chalermsinsuwan, B. 2nd International Symposium on Computational Particle Technology & 13th International Conference on CFD in the Minerals and Process Industries, Melbourne,…
In this study, the carbon dioxide sorption using solid sorbent (sodium carbonate supported on alumina) in fixed and fluidized bed reactors was investigated. The key objective was to examine the carbon dioxide concentration profile or breakthrough curve (as…