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Author: search.filters.author.Atong, DuangduenSubject: search.filters.subject.Cattail leaves

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    Influence of hydrothermal-carbonization process on biochar properties from cattail weed waste
    (2019-01-01)
    Smuthkochorn, Araya
    ;
    Katunyoo, Nardnutda
    ;
    Kaewtrakulchai, Napat
    ;
    Atong, Duangduen
    ;
    Soongprasit, Kanit
    Biochars have been successfully synthesized from Cattail leave (CL) via hydrothermal and carbonization process. The experimental work described has focused on physical properties of biochars produced from Cattail leaves at 160, 180 and 200°C for 8, 12 and 24 h for hydrothermal and substituted to carbonization at 700°C for 2 h. The influences of hydrothermal and carbonization on the pore structure, surface functional groups and the product yield was also investigated by characterization using Scanning Electron Microscope (SEM) and Fourier Transform Infrared Spectroscopy, respectively. Although the morphologies of cell structures were maintained in the hydrothermal and carbonization, it was found that the yield of produced biochar was decreased with increase of the hydrothermal temperature and time. The images from SEM showed that the pore structures are quite roughness on their external surface of biochar and the functional group of their surface area has most of pure carbon content (59-65 wt%).
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    Nanoporous carbon from Cattial leaves for carbon dioxide capture
    (2019-01-01)
    Smuthkochorn, Araya
    ;
    Katunyoo, Nardnutda
    ;
    Kaewtrakulchai, Napat
    ;
    Atong, Duangduen
    ;
    Soongprasit, Kanit
    Reducing anthropogenic CO<inf>2</inf> emissions and lowering the concentration of greenhouse gases in the atmosphere have quickly become one of the most urgent environmental issues of our age. Carbon capture and storage (CCS) is the option for reducing these harmful CO<inf>2</inf> emissions. While a variety of technologies and methods have been developed, the separation of CO<inf>2</inf> from gas streams is still a critical issue. Apart from establishing new techniques, the exploration of capture materials with high separation performance and low capital cost are of paramount importance. Nanoporous carbon derived from leaf of cattail flower that found in all areas throughout Thailand, the biomass was previously pyrolyzed at 500 to 700<sup>o</sup>C and the produced chars were further activated with NaOH, KOH, Na<inf>2</inf>CO<inf>3</inf> and K<inf>2</inf>CO<inf>3</inf> subsequently. Afterwards, the resulting materials were characterized by Scanning electron microscopy, Fourier-transform infrared spectroscopy and Raman scattering measurement. From this investigation, produced activated carbon will be efficient as an option for CO<inf>2</inf> emission control.