Some Physical Properties and Adsoptive Behaviors of Wood Charcoal Carbonized with Domestic wood

국산수종으로 탄화한 목탄의 물성 및 흡착성

  • Jo, Tae-Su (Department of Forest products, Korea Forest Research Institute) ;
  • Lee, Oh-Kyu (Department of Forest products, Korea Forest Research Institute) ;
  • Ahn, Byung-Jun (Department of Forest products, Korea Forest Research Institute) ;
  • Choi, Joon-Weon (Department of Forest products, Korea Forest Research Institute)
  • 조태수 (국립산림과학원 임산공학부) ;
  • 이오규 (국립산림과학원 임산공학부) ;
  • 안병준 (국립산림과학원 임산공학부) ;
  • 최준원 (국립산림과학원 임산공학부)
  • Published : 2006.06.30

Abstract

Properties of wood charcoal made from the domestic wood species at $300-900^{\circ}C$ have investigated to understand the correlation between carbonization temperature and chemical and physical characteristics of wood charcoal. In terms of charcoal yield at particular carbonization temperatures, it was drastically decreased until the temperature reaches up to $600^{\circ}C$ and the decrease ratio of yield was reduced at higher temperatures. As the carbonization temperature increased, pH of the wood charcoal increased so that it became basic at last. The wood charcoal prepared at $600{\sim}700^{\circ}C$ showed the highest caloric value and those of wood charcoals made at higher temperature became plateau at a little lower level than the peak. The caloric value of Japanese larch charcoal was a bit higher than that of Red oak charcoal. The carbon content in the wood charcoal was increased as the carbonization temperature increased, whereas the hydrogen content was decreased. Specific surface area of the wood charcoal became larger with increase in temperature up to $600^{\circ}C$ but it was decreased or reduced in the increasing ratio after, and then it rose again at higher temperature than $800^{\circ}C$. Absorption capacity of the wood charcoal against iodine and gaseous acetic acid became greater as the carbonization temperature increased. Japanese larch charcoal presented higher absorption capacity than Red oak charcoal. As the above results, it is revealed that carbonization temperature affects the chemical and physical properties of wood charcoal. Therefore, to use wood charcoal with maximum effect it should be prepared at optimum temperature for proper use.