Browsing by Author "Surachat Sinworn"

Now showing 1 - 3 of 3
  • Default Image
    Item
    Effects of land-use change on the volume of water flow into the Mun Bon reservoir in Nakhon Ratchasima Province, Thailand
    (Applied and Natural Science Foundation, 2022) Surachat Sinworn; Nuttabodee Viriyawattana; N. Viriyawattana; Science and Technology, Suan Dusit University, Bangkok, Thailand; email: nutta_v@hotmail.com
    The land-use patterns in watershed areas in the Chorakhe Hin Sub-district, Khon Buri District, Nakhon Ratchasima Province, Thailand, have been found to change from forest areas. Different agricultural areas cause variations in the amount of water that flows from the stream into the reservoir, potentially leading to future water shortages. This study was conducted to explore the effects of land-use change on the volume of water flow into the Mun Bon Reservoir, Chorakhe Hin Sub-district, Khon Buri District, Nakhon Ratchasima Province, Thailand. The model analysis techniques, namely MarkovÕs Chain CLUES and SWAT, were employed to predict the effects of land-use patterns in the area of the upper Mun River on the volume of water flow into the Mun Bon reservoir. According to the predictions obtained based on the land-use models, forest areas may be converted into cassava plantations by 2029. When the comparative effects were considered, the normal volume of water flowing into the Mun Bon reservoir was found to be equivalent to 96 million cubic meter per year. The predicted volume before Christ (A.D.) 2029 is 30 million cubic meter. Accordingly, the water volume in the Mun Bon reservoir would be lower than that derived from the usual land-use patterns. © 2022, Applied and Natural Science Foundation. All rights reserved.
  • Default Image
    Item
    Improving Fire Extinguishing Properties of Class B Fire with Cellulose-Hydrogel from Water Hyacinth (Eichhornia crassipes) Extract
    (Faculty of Engineering, Universitas Indonesia, 2025) Surachat Sinworn; Nuttabodee Viriyawattana; N. Viriyawattana; Department of Occupational Health and Safety, Faculty of Science and Technology, Suan Dusit University, Bangkok, Bangplad District, 10700, Thailand; email: nuttabodee_vir@dusit.ac.th
    Cellulose can be processed into a hydrogel that enhances performance in extinguishing Class B (oil) fire. This hydrogel has a significant increase in viscosity after exposure to high temperatures. As the temperature increases, the viscosity rises, enhancing the ability of hydrogel to coat the fuel surface and effectively prevent the production of flammable vapor. Therefore, this study aimed to synthesize cellulose-based hydrogel by extracting water hyacinth to obtain cellulose in the form of methylcellulose (MC) powder. Properties of cellulose hydrogel were tested using Fourier Transform-Infrared Spectrometer (FT-IR), Scanning Electron Microscope (SEM), Energy Dispersive X-Ray Spectroscopy (EDX), viscosity, Thermogravimetric Analysis (TGA), and gel fraction analysis. To define its performance, fire extinguishing efficiency tests were performed by comparing mono-ammonium phosphate (MAP) or ABC (control) and MAP+ cellulose hydrogel (treatment). The data obtained were the radiation temperature, the time required to extinguish fire, and characteristics of the fuel coating during combustion. The results showed that fire extinguishing performance for Class B fire, in terms of radiation temperature, was lower for MAP+cellulose Hydrogel at 284.67±39.28°C, compared to MAP at 368.10±51.46°C. Extinguishing time for the MAP+ Cellulose Hydrogel was 4.19 seconds faster than only MAP. Additionally, the coating properties improved as the substance transitioned from powder to gel, effectively coating the fuel at high temperatures. This was consistent with the results of the Gel Fraction Analysis and TGA, which prevented fire spread and improved flame retardancy. © (2025), (Faculty of Engineering, Universitas Indonesia). All Rights Reserved.
  • Default Image
    Item
    Performance improvement of the dry chemical-based fire extinguishers using nanocalcium silicate synthesised from biowaste
    (SAGE Publications Ltd, 2023) Nuttabodee Viriyawattana; Surachat Sinworn; S. Sinworn; Occupational Health and Safety Program, Faculty of Science and Technology, Suan Dusit University, Bangkok, Thailand; email: sinworn@hotmail.com
    Herein, we investigated nanocalcium silicate (nCa2SiO4) prepared from clam shells and rice husks for its utilisation as a chemical agent in a fire-extinguishing mixture comprising ABC dry powder. The fire-extinguishing performance was evaluated with Class A and B fires. The prepared mixture was compared with commercial mono-ammonium phosphate powder based on different parameters, namely extinguishing time, amount of extinguishing agent used, fire temperature reduction rate, powder coating on the fuel and a reburn incident. It was found that the mixture of nCa2SiO4 and ABC dry powder could extinguish Class A and B fires within 10.67 and 9 s, respectively, while commercial mono-ammonium phosphate powder required 11 and 11.33 s to extinguish Class A and B fires, respectively. Thus, the mixture of nCa2SiO4 and ABC dry powder was more effective and less consumed as compared to commercial mono-ammonium phosphate powder (Class B only). This study demonstrates the efficacy of nCa2SiO4 to improve the performance of dry chemical-based fire extinguishers. © The Author(s) 2023.