No.5（2010）11.Manufacturing of activated carbon made from waste woody biomass

Toshiya Hagiwara, Kensuke Kawarada, Jun Inoue, Hirokazu Sugimori, Minoru Shiraishi, Akira Watanabe

  Waste woody biomass such as bark has been incurred in Tokyo. In this study, we aimed to develop economical and high quality adsorbents made from waste woody biomass, and we enlarged the amount of activated carbon production in several kg with the aid of manufacturers for practical use. In lab-scale, we achieved high quality activated carbon from the pellets whose mixing ratio of wood chip and waste bark was 3:1. In this experiment, we made activated carbons in two compositions, that is, “A composition (wood powder and waste bark is 3:1)” and “B composition (wood powder only)”. As a result, we succeeded in activated carbons manufacturing of several kg, but there were some issues in each process. In the granulation process, strength of “A composition” pellets was fragile. In the carbonization process, a part of each composition char became a powder. In the activating process, the yield of “A composition” activated carbon was low. To get better performance, it is necessary to sort out some issues in each process, such as pellets strength and selection of machine type etc.

Keywords

activated carbon, bark, waste woody biomass

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