Skip to main content

Official Journal of the Japan Wood Research Society

Journal of Wood Science Cover Image

Activated carbon sheet prepared from softwood acetic acid lignin


As an example of activated carbon (AC) moldings, AC sheets were prepared from thermoplastic acetic acid lignin by lamination. The resulting AC sheets are a new type of product that can be applied as water and air cleaners. Powdered softwood acetic acid lignin (SAL) was molded into sheets by a thermal pressing method. When the sheet was carbonized under a stream of nitrogen at 1000°C, it was deformed with expansion and contained much foam. The deformation during carbonization was suppressed by the addition of pulp to the lignin. A sheet prepared by mixing lignin with pulp was directly carbonized without thermostabilization. The carbonized sheet was activated with steam for 2h. The resulting AC sheet had adsorption properties, such as specific surface and iodine adsorption capacity, comparable to those of commercial AC powders or granules. Furthermore, the AC sheet had a larger capacity to adsorb methane than did the commercial AC powder. Therefore, SAL seems to be a promising source for the AC moldings.


  1. 1.

    Sanada Y, Suzuki M, Fujimoto K (1992) In: Activated carbon. Kodansha, Tokyo, pp 54–65, 230–238

    Google Scholar 

  2. 2.

    Goring DAI (1963) Thermal softening of lignin, hemicellulose and cellulose. Pulp Pap Mag Can 64:T517–527

    CAS  Google Scholar 

  3. 3.

    Mikami M, Kamada M (1964) Preparation of active carbon. I. Granulation and carbonization of lignin and sawdust-char. Rep Hokkaido Ind Res Inst 169:1–7

    Google Scholar 

  4. 4.

    Mikami M, Kamada M (1964) Preparation of active carbon. II. Steam activation of lignin. Rep Hokkaido Ind Res Inst 169:8–13

    Google Scholar 

  5. 5.

    Uraki Y, Kubo S, Nigo N, Sano Y, Sasaya T (1995) Preparation of carbon fibers from organosolv lignin obtained by aqueous acetic acid pulping. Holzforschung 49:343–350

    CAS  Article  Google Scholar 

  6. 6.

    Uraki Y, Kubo S, Kurakami H, Sano Y (1997) Activated carbon fibers from acetic acid lignin. Holzforschung 51:188–192

    CAS  Article  Google Scholar 

  7. 7.

    Kubo S, Uraki Y, Sano Y (1996) Thermomechanical analysis of isolated lignins. Holzforschung 50:144–150

    CAS  Article  Google Scholar 

  8. 8.

    Kubo S, Ishikawa N, Uraki Y, Sano Y (1997) Preparation of lignin fibers from softwood acetic acid lignin: relationship between fusibility and the chemical structure of lignin. Mokuzai Gakkaishi 43:655–662

    CAS  Google Scholar 

  9. 9.

    Kubo S, Uraki Y, Sano Y (1998) Preparation of carbon fibers from softwood lignin by atmospheric acetic acid pulping. Carbon 36:1119–1124

    CAS  Article  Google Scholar 

  10. 10.

    Okabe T (1996) Production method of wood ceramics (in Japanese). In: Wood ceramics. Uchida Rokakuho Publishing, pp 42–128

  11. 11.

    Hamabe H, Okayama T, Simada M, Iida T, Kawarada K (1998) Adsorption characteristics of activated carbon from waste newspaper (in Japanese). In: Proceedings of 1998 (65th) pulp and paper research conference, pp 14–17

  12. 12.

    Shimada M, Takigami S, Nakamura Y, Abe Y, Iizuka T, Makiyama N (1993) Efficiently activated carbon fiber derived from grafted novoloid fiber. J Appl Polym Sci 48:1121–1126

    CAS  Article  Google Scholar 

  13. 13.

    Sano Y, Nakamura M, Shimamoto S (1990) Pulping of wood at atmospheric pressure. II. Pulping of birch wood with aqueous acetic acid containing a small amount of sulfuric acid. Mokuzai Gakkaishi 36:207–211

    CAS  Google Scholar 

  14. 14.

    Brunauer S, Deming LS, Deming WE, Teller E (1940) On a theory of the van der Waals adsorption of gases. J Am Chem Soc 62:1723–1732

    CAS  Article  Google Scholar 

  15. 15.

    Gregg SJ, Sing KSW (1982) Adsorption, surface area and porosity, 2nd edn. Academic, London, pp 195–216

    Google Scholar 

  16. 16.

    Brunauer S, Emmett PH, Teller E (1938) Adsorption of gases on multimolecular layers. J Am Chem Soc 60:309–321

    CAS  Article  Google Scholar 

  17. 17.

    Dollimore D, Heal GR (1964) An improvement for the calculation of pore size distribution from adsorption data. J Appl Chem 14:109–114

    CAS  Article  Google Scholar 

  18. 18.

    Tai K, Shindo N (1993) Activated carbon fiber. Sen-I Gakkaishi 49:173–182

    Article  Google Scholar 

Download references

Author information



Corresponding author

Correspondence to Yasumitsu Uraki.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Uraki, Y., Taniwatashi, R., Kubo, S. et al. Activated carbon sheet prepared from softwood acetic acid lignin. J Wood Sci 46, 52–58 (2000).

Download citation

Key words

  • Activated carbon moldings
  • Activated carbon sheet
  • Cellulosic material
  • Methane adsorption
  • Pore distribution
  • Softwood acetic acid lignin
  • Thermostabilization