Activated carbon produced from charcoal obtained by vacuum pyrolysis of softwood bark residues

Citation
Nz. Cao et al., Activated carbon produced from charcoal obtained by vacuum pyrolysis of softwood bark residues, ENERG FUEL, 15(5), 2001, pp. 1263-1269
Citations number
25
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environmental Engineering & Energy
Journal title
ENERGY & FUELS
ISSN journal
0887-0624 → ACNP
Volume
15
Issue
5
Year of publication
2001
Pages
1263 - 1269
Database
ISI
SICI code
0887-0624(200109/10)15:5<1263:ACPFCO>2.0.ZU;2-#
Abstract
Vacuum pyrolysis of softwood bark residues yields besides oil, charcoal as second valuable product. The activation behavior of the vacuum pyrolysis ch arcoal was compared to charcoal produced during conventional, atmospheric c arbonization process. Steam activation of charcoal obtained by vacuum pyrol ysis yields an activated carbon with a higher surface area than by using ch arcoal produced during atmospheric carbonization process. This can be relat ed to the more open pore structure of the vacuum pyrolysis charcoal. Steam activation of the vacuum pyrolysis charcoal was studied at temperatures ran ging from 760 to 850 degreesC. Activated carbons with surface areas above 1 200 m(2)/g and micropore volumes above 0.40 cm(2)/g were obtained. Dependin g on the activation conditions, carbons with properties (surface area, pore volume, pore structure and methylene blue value) similar to commercial gra des were produced.