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Active carbons from low temperature conversion chars

Abstract

Hulls obtained from the fruits of five tropical biomass have been subjected to low temperature conversion process and their chars activated by partial physical gasification to produce active carbons. The biomass are T. catappa, B. nitida, L leucophylla, D. regia and O. martiana. The bulk densities of the samples ranged from 0.32 g.cm{sup 3} to 0.52 g.cm{sup 3}. Out of the samples T. catappa recorded the highest cellulose content (41.9 g.100g{sup -1}), while O. martiana contained the highest lignin content (40.7 g.100g{sup -1}). The ash of the samples were low (0.5 - 4.4%). The percentage of char obtained after conversion were high (33.7% - 38.6%). Active carbons obtained from T. catappa, D. regia and O. martiana, recorded high methylene blue numbers and iodine values. They also displayed good micro- and mesostructural characteristics. Micropore volume (V{sub micro}) was between 0.33cm{sup 3}.g{sup -1} - 0.40cm{sup 3}.g{sup -1}, while the mesopore volume(V{sub meso}) was between 0.05 cm{sup 3}.g{sup -1} - 0.07 cm{sup 3}.g{sup -1}. The BET specific surface exceeds 1000 m{sup 2}.g{sup -1}. All these values compared favourably with high grade commercial active carbons. (author)
Authors:
Adebowale, K O; [1]  Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)]; Bayer, E [2] 
  1. Department of Chemistry, University of lbadan, lbadan (Nigeria)
  2. Universitaet Tuebingen, Institut fuer Organische Chemie, Forschungstelle Nukleinsaeure- und Peptidchemie, Tuebingen (Germany)
Publication Date:
May 01, 2002
Product Type:
Technical Report
Report Number:
IC-2002/29
Resource Relation:
Other Information: 39 refs, 4 figs, 7 tabs; PBD: May 2002
Subject:
09 BIOMASS FUELS; ACTIVATED CARBON; ACTIVATION ANALYSIS; ASHES; BIOMASS; BIOMASS CONVERSION PLANTS; CELLULOSE; CHARS; GASIFICATION; IODINE; LIGNIN
OSTI ID:
20288351
Research Organizations:
Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
TRN: XA0202808050383
Availability:
Available from INIS in electronic form
Submitting Site:
INIS
Size:
29 pages
Announcement Date:

Citation Formats

Adebowale, K O, Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)], and Bayer, E. Active carbons from low temperature conversion chars. IAEA: N. p., 2002. Web.
Adebowale, K O, Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)], & Bayer, E. Active carbons from low temperature conversion chars. IAEA.
Adebowale, K O, Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)], and Bayer, E. 2002. "Active carbons from low temperature conversion chars." IAEA.
@misc{etde_20288351,
title = {Active carbons from low temperature conversion chars}
author = {Adebowale, K O, Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)], and Bayer, E}
abstractNote = {Hulls obtained from the fruits of five tropical biomass have been subjected to low temperature conversion process and their chars activated by partial physical gasification to produce active carbons. The biomass are T. catappa, B. nitida, L leucophylla, D. regia and O. martiana. The bulk densities of the samples ranged from 0.32 g.cm{sup 3} to 0.52 g.cm{sup 3}. Out of the samples T. catappa recorded the highest cellulose content (41.9 g.100g{sup -1}), while O. martiana contained the highest lignin content (40.7 g.100g{sup -1}). The ash of the samples were low (0.5 - 4.4%). The percentage of char obtained after conversion were high (33.7% - 38.6%). Active carbons obtained from T. catappa, D. regia and O. martiana, recorded high methylene blue numbers and iodine values. They also displayed good micro- and mesostructural characteristics. Micropore volume (V{sub micro}) was between 0.33cm{sup 3}.g{sup -1} - 0.40cm{sup 3}.g{sup -1}, while the mesopore volume(V{sub meso}) was between 0.05 cm{sup 3}.g{sup -1} - 0.07 cm{sup 3}.g{sup -1}. The BET specific surface exceeds 1000 m{sup 2}.g{sup -1}. All these values compared favourably with high grade commercial active carbons. (author)}
place = {IAEA}
year = {2002}
month = {May}
}