Srilomsak, Mek

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Srilomsak, Mek
Alternative Name
Srilomsak, M.
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Email
mek.sr@kmitl.ac.th

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    Item type:Publication,
    VISUALIZATION OF SOOT NANOSTRUCTURE FROM ETHANOL BLENDED BIODIESEL USING ELECTRON MICROSCOPY IMAGE ANALYSES
    (2022-09-14)
    Thin, Myat Hsu
    ;
    Karin, P.
    ;
    Srilomsak, M.
    ;
    Po-Ngen, W.
    ;
    Saisirirat, P.
    Characteristics of particulate matter from ethanol-blended biodiesel on the diesel engine in terms of nanostructure were investigated through electron microscopy. Commercial B20 fuel (20% palm and 80% diesel) was used as the baseline fuel and ethanol was blended at 5% and 10% with B20 fuel. The agglomerated particle size was reduced by increasing the weight ratio of ethanol. The average diameter sizes of the single primary nanoparticles of B20, B20E5, and B20E10 are about 20-40 nm while inter-planar spacing is about 0.404 nm, 0.383 nm, and 0.352 nm, respectively. The total fringe lengths of B20, B20E5, and B20E10 are approximately 521 nm, 470 nm, and 262 nm measured from the areas of 20 nm x 20 nm of primary nanoparticles.
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    Item type:Publication,
    Characterization of biodiesels and tire derived particulate matters in morphology and nanostructure
    (2022-01-01)
    Oh, Ban seok
    ;
    Karin, Preechar
    ;
    Srilomsak, Mek
    ;
    Chonvasin, Kritin
    ;
    Po-ngen, Watcharin
    Particulate Matters (PM) are known to be dangerous to human health and the environment. Regulations have been set to limit PM levels from vehicles, including compression ignition engine vehicles. The effect of increasing biodiesel content in the fuels has been investigated with respect to the PM using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). PM from tire emissions were compared against diesel PM using SEM, energy dispersive x-ray spectroscopy (EDS), TEM, particle size analysis, x-ray diffraction (XRD), and Raman spectroscopy (RS). The SEM and TEM show that increasing the biodiesel content decreased the size of the PM agglomerate particles, primary particles, and fringes. The EDS, RS, and XRD show that Tire PM are mostly carbon with silicon, calcium, zinc, and other various trace elements. They also allow comparisons with diesel PM for the carbon nanostructure. The particle size analysis shows that Tire PM are generally larger than engine derived PM. The TEM showed that the nanostructure of the carbonaceous Tire PM was the same fringe structure as the engine derived PM. The Tire PM was successfully characterized using similar methods as engine derived soot. There is strong relationship between the increasing of biodiesel content and reduction of agglomerate size, primary particle size and average fringe length.
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