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Author: search.filters.author.Fuji, MasayoshiSubject: 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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    Preparation of monometallic catalysts on carbon support for synthesis of biodiesel fuel
    (2019-01-01)
    Longprang, Tripob
    ;
    Udomsap, Parncheewa
    ;
    Chollacoop, Nuwong
    ;
    Fuji, Masayoshi
    ;
    Eiad-Ua, Apiluck
    Monometallic catalysts have been prepared on nano-porous carbon support materials by way of hydrothermal carbonization of Cattail (genus Typha) leaves. The catalysts are for synthesis of biodiesel fuel. This research studied the effect of hydrothermal temperature (at 160-200 °C), reaction time (4-24 h) and the presence of KOH on the activated porosity of a carbon support. Then the type of loaded metal catalyst (Mn, Fe, Co, Ni, Cu and Pb), placed on the carbon support by an impregnation method, was investigated. This led to partial hydrogenation catalytic activity forming biodiesel. The carbonization temperature was studied in the range 500-900 °C for 2 hours. The samples were characterized by scanning electron microscopy, nitrogen sorption, fourier transform infrared spectroscopy and X-ray diffraction. The results indicated that the hydrothermal process at 200 °C for 12 hours exhibited the highest surface area, porosity and pore volume. This led to an appropriate distribution of metal on the carbon support surface.