KMITL

Permanent URI for this communityhttps://dspace.kmitl.ac.th/handle/123456789/1

Browse

Settings

Author: search.filters.author.Kaewtrakulchai, NapatSubject: search.filters.subject.Pyrolysis

Search Results

Now showing 1 - 2 of 2
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Characterization of activated biochar prepared from pineapple waste for metal catalyst support
    (2019-01-01)
    Kaewtrakulchai, Napat
    ;
    Rousset, Patrick
    ;
    Eiad-Ua, Apiluck
    The utilization of agricultural residues for biochar processing has recently attracted attention due to the potential in many applications. One of the most urgent options for biochar is as a support material used in the catalytic process. In this study, activated biochar which has a high surface area and is inexpensive was prepared from pineapple waste mostly available in the southern and eastern parts of Thailand. The raw pineapple waste was previously carbonized at the desired temperature (400 and 600°C) using different heating rates (7 and 20°Cmin <sup>-1</sup> ) and steam was added immediately as an activator. The BET surface area was developed from 0.95 to 228.34 m <sup>2</sup> g <sup>-1</sup> by increasing the carbonization temperature with steam activation. A higher carbon percentage was also represented in a high-temperature condition. From the observed results, this new finding hints that the produced activated biochar from pineapple waste showed a beneficial characteristic which is available for use as a metal catalyst support or other functional materials.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    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.