• Journal of the Korean Wood Science and Technology
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• v.38 no.1
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• pp.27-35
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• 2010

To evaluate the basic characteristics and adsorption properties of commercial wood charcoal, we investigated the proximate analysis, porosimetry analysis, methylene blue adsorption, removal ratios of formaldehyde, and removal ratio of ethylene gas. Fixed carbon contents of traditional black and white charcoal, and mechanical charcoal were 51.8~76.6%, 72.9~84.6%, and 48.5~80.3%, respectively. Refining degrees of the most traditional black charcoal were 9, and those of white charcoal and mechanical charcoals were zero. Specific surface area of traditional black charcoal was 0.1~13.7 $m^2/g$, which was quite lower than that of white charcoal (53.2~372.6 $m^2/g$) and mechanical charcoals (224.3~464.6 $m^2/g$). Also, amounts of methylene blue adsorption were quite lower in black charcoal (0.53~1.97 mg/g) compared with white charcoal (2.68~7.68 mg/g) and mechanical charcoal (11.63~26.10 mg/g). Removal ratios of formaldehyde of the black charcoal were 11.4~26.7%, which is quite similar to white charcoal (17.9~34.9%) and mechanical charcoal (5.5~25.8%). Removal ratios of ethylene gas for traditional black charcoal, traditional white charcoal, and mechanical charcoal were 2.2~43.5%, 21.7~39.1%, 21.7~39.1%, respectively. There was no significant difference in the removal ratios of formaldehyde and ethylene gas among traditional black charcoal, traditional white charcoal, and mechanical charcoal.

• Journal of the Korean Wood Science and Technology
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• v.38 no.6
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• pp.480-489
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• 2010

We investigated the functional characteristics of commercial wood charcoal in Korea and their application as functional raw materials. The areas of analysis were anatomical features, elementary composition, mineral composition, caloric values, anion and far-infrared ray emission, and moisture absorption capacity. Based on the analyses as above mentioned, it is considered that charcoal can be evaluated as functional raw material. In commercial wood charcoal in Korea, there were highly varied depending on manufacturing methods as black charcoal, white charcoal and mechanical charcoal and manufactures for elementary composition, mineral composition, anion emission, far infrared ray emission. Especially, black charcoal showed lower moisture absorption capacity than white charcoal and mechanical charcoal. For charcoal as functional raw material, selective usage are needed based on the analyses of anatomical features, elementary composition, mineral composition, caloric values, anion and far-infrared ray emission, and moisture absorption capacity. Specific charcoal making methods for improving specific functionality, required as functional raw material, are necessary in further research.