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http://dx.doi.org/10.9713/kcer.2022.60.2.208

Characterization of Charcoals prepared by Korean Traditional Kiln  

An, Ki Sun (Department of Carbon Convergence Eng., Jeonju University)
Kwak, Lee Ku (Department of Carbon Convergence Eng., Jeonju University)
Kim, Hong Gun (Department of Carbon Convergence Eng., Jeonju University)
Ryu, Seung Kon (Institute of Carbon Technology, Jeonju University)
Publication Information
Korean Chemical Engineering Research / v.60, no.2, 2022 , pp. 208-216 More about this Journal
Abstract
Surface morphology and adsorption characteristics of black and white charcoals prepared from Korean traditional kiln were quantitatively analyzed. TGA and elemental analysis of charcoals were different from produced kiln, and thermal degradation temperature and carbon content of white charcoals were apparently higher than those of black charcoals. Surface morphology shows the activation progressed through the longitudinal direction of woods and new micropores were developed to radial direction on the surface of macropores as the furthermore activation resulting in the pore connection. BET adsorption isotherms show that there are low-pressure hysteresis due to the no desorption of adsorbates, which resulted in unique Type of charcoals overlapping Type I and Type IV. Such a low-pressure hysteresis is occurred from expansion of adsorbates, which were embedded in the micropore entrances and did not get out during the desorption run. The characteristics of charcoals such as specific surface area and pore size distribution did not show correct values depending on not only produced company but also sampling sites of one piece of charcoal. Therefore, it is not easy to suggest the quantitative characteristics of charcoals prepared from Korean traditional kiln. On the other hand, preparation the quality standard of charcoal is necessary for their special uses such as adsorbent.
Keywords
Charcoals; Korean traditional kiln; Surface morphology; Adsorption characteristics;
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