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›› 2010, Vol. 44 ›› Issue (2): 5-8.

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Comparison of Preparation Technology of Bamboo Charcoal

ZHENG Zhi-feng1,2, YUAN Yang-chun2, JIANG Jian-chun1, DENG Xian-lun1, YANG Xiao-qin2, SUN Kang1   

  1. 1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Laboratory for Chemical Utilization of Biomass;Key and Open Lab. on Forest Chemical Engineering, SFA, Nanjing 210042, China;2. Key Laboratory of Protection, Cultivation and Utilization of Forest Resource in Southwest Country Cooperated by Ministry of Education with Yunnan Province, Southwest Forestry University, Ku nming 650224, China
  • Received:2009-08-31 Revised:1900-01-01 Online:2010-03-30 Published:2010-03-30

Abstract: Bamboo charcoals were prepared using one-step or two-step carbonization method under various carbonization temperatures and times. The yield, iodine number and electrical resistivity of the obtained charcoals were measured and their structures were observed by scanning electron microscope (SEM) in order to elucidate the effects of preparation methods on the properties of bamboo charcoal. Results showed that the charcoal yield by the one-step method was higher than that by the two-step method, whereas their iodine number and electrical resistivity were lower. The optimal carbonization temperature and time to prepare bamboo charcoal were 900℃ and 4 h, independently of the carbonization method. In this case, charcoal yield, iodine number and electrical resistivity of bamboo charcoal by one-step method and two-step method were 24.37% and 23.80%, 265 and 364 mg/g, 4.37 and 5.17 Ω·cm, respectively.

Key words: bamboo charcoal, yield, iodine number, electrical resistivity

CLC Number: