Chutipaijit, Sutee

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Chutipaijit, Sutee
Alternative Name
Chutipaijit, S.
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Email
sutee.ch@kmitl.ac.th

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    Nanoporous Carbon from Water Hyacinth Via Hydrothermal Carbonization
    (2020-07-30)
    Chanpee, Sirayu
    ;
    Suksai, Nattaya
    ;
    Kaewtrakulchai, Napat
    ;
    Chutipaijit, Sutee
    ;
    Fuji, Masayoshi
    Nanoporous carbon materials have been successfully synthesized from water hyacinth via hydrothermal carbonization (HTC). This research was studied the effect of hydrothermal temperature from 160 - 200 C and reaction time for 4 - 24 h. Afterwards, carbonization was carried out at the temperature of 600 - 900 C for 2 h in N2 atmosphere for developing porosity and even removing contaminants of hydrothermal char to obtain the porous carbon. The physico-chemical properties of nanoporous carbon materials were comprehensively characterized through Scanning electron microscope (SEM), Fourier transforms infrared spectroscopy (FT-IR), CHN elemental analysis, X-ray diffraction (XRD) and BET analysis. The adsorption capacity and carbon content of nanoporous carbon materials from water hyacinth were increased with increased hydrothermal carbonization temperature and time. Performing HTC at 200 C for 12 h. Is the optimum condition to synthesis of precursor materials for good adsorbent.
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    Valorization of horse manure conversion to magnetic carbon nanofiber for dye adsorption by hydrothermal treatment coupled with carbonization
    (2024-06-01)
    Kaewtrakulchai, Napat
    ;
    Chanpee, Sirayu
    ;
    Pasee, Warit
    ;
    Putta, Ampol
    ;
    Chutipaijit, Sutee
    Pollution of water resources has recently increased as a result of expanded industrial activity. Recycling waste biomass into bio-adsorbent material offers a cheap, easy, and eco-friendly solution. In this study, magnetic carbon nanofibers (MCNF) with a highly porous structure were developed from magnetite-preloaded horse manure by hydrothermal treatment followed by carbonization using different ratios of iron (III) nitrate and iron oxide as magnetic precursors. The produced MCNF had a very porous structure with specific surface area of 435.31 m<sup>2</sup>/g and high carbon content. The magnetic characteristics of MCNF promoted by the presence of iron oxide species. The saturated magnetization of MCNF obtained from a 5:5 ratio of the magnetic precursors (iron (III) nitrate: iron oxide) was 2.48 emu/g. Synthesized MCNF was applied as a bio-adsorbent for methylene blue (MB) removal from aqueous solution, with results showing excellent dye adsorption of 92–99 %. MB adsorption was facilitated by pore filling, electrostatic contact, hydrogen bonding, and ion complexation. Experimental results indicated that the Freundlich isotherm and pseudo-second-order kinetic models concurred with the observed MB adsorption data, suggesting that the adsorption mechanism involved multilayered micropore interactions between magnetite and MB chemisorption. The resulting magnetic adsorbent was successfully removed from the aqueous solution by physical separation. Findings indicated that horse manure-derived MCNF could be used as an efficient bio-adsorbent to remove organic contaminants in wastewater.
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    Highly porous carbon materials for adsorbent from water hyacinth via hydrothermal carbonization
    (2020-10-26)
    Chanpee, Sirayu
    ;
    Suksai, Nattaya
    ;
    Kaewtrakulchai, Napat
    ;
    Chutipaijit, Sutee
    ;
    Fuji, Masayoshi
    Carbon nanoparticles have been successfully synthesized from waste lignin via carbonization and base activation. The effect of base activation on lignin transformation to carbon nanoparticles was investigated. Carbon nanoparticles from waste lignin via carbonization and base activation were denoted as CNPs. The physicochemical properties of CNPs were comprehensively characterized through a Scanning electron microscope (SEM), X-ray diffraction (XRD), and Raman spectroscopy. The results revealed that the condition using 5 wt% of sodium hydroxide (NaOH) and carbonization at 700°C on N2 atmosphere exhibited the highly porous structure of carbon nanoparticles. In conclusion, the NaOH-treated CNPs led to the production of high specific surface areas and high micropore volumes.
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    Nanoporous Carbon from Water Hyacinth via Hydrothermal Carbonization assisted Chemical Activation for Dye adsorption
    (2022-07-01)
    Sukulbrahman, Manu
    ;
    Siraorarnroj, Siwat
    ;
    Suksai, Nattaya
    ;
    Kaewtrakulchai, Napat
    ;
    Chutipaijit, Sutee
    Nanoporous carbon was successfully prepared by hydrothermal carbonization with chemical activation using water hyacinth as a raw material. The porous carbon was produced for the adsorption of methylene blue (MB), which is an organic pollutant in wastewater from several industries. The effect of various parameters such as pH, dye concentration and adsorption period time on dye removal were studied. The highest removal efficiency of MB obtained using WH nanoporous carbon was approximately 96.8-99.9% within an adsorption time between 10 and 30 min. The dye removal capacity increased with increasing of period time during the adsorption test. Moreover, the adsorption kinetics of MB during adsorption process was explained by the Langmuir and Freundlich adsorption isotherms.