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Title: Formation of charcoal from biomass in a sealed reactor

Abstract

In this paper, samples o cellulose, hemicellulose, lignin, and nine species of whole biomass are pyrolyzed in sealed reactors. Very high charcoal yields (e.g., 40% from cellulose, 48% from Eucalyptus gummifera) were obtained. Higher sample loading (sample mass per unit reactor volume) increased charcoal yield and the associated exothermic heat release and lowered the reaction onset temperature. These effects were induced by the vapor-phase concentrations of the volatile products, and not the system pressure. Addition of water catalyzed the reaction and increased the char yield. These observations suggest that charcoal formation is autocatalyzed by water, an initial pyrolysis product. When whole biomass was used as a feedstock, higher charcoal yields were obtained from species with high lignin and/or low hemicellulose content.

Authors:
;  [1]; ; ;  [2]
  1. Hawaii Natural Energy Inst., Dept. of Mechanical Engineering, Univ. of Hawaii at Manoa, Honolulu, HI (United States)
  2. Research Lab. for Inorganic Chemistry, Hungarian Academy of Sciences, Budapest 1502 (Hungary)
Publication Date:
OSTI Identifier:
7025098
Resource Type:
Journal Article
Journal Name:
Industrial and Engineering Chemistry Research; (United States)
Additional Journal Information:
Journal Volume: 31:4; Journal Issue: 4; Journal ID: ISSN 0888-5885
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; CELLULOSE; PYROLYSIS; CHARCOAL; YIELDS; HEMICELLULOSE; LIGNIN; BIOMASS CONVERSION PLANTS; CATALYSIS; PHASE STUDIES; VAPORS; WATER; ADSORBENTS; CARBOHYDRATES; CHEMICAL REACTIONS; DECOMPOSITION; FLUIDS; GASES; HYDROGEN COMPOUNDS; INDUSTRIAL PLANTS; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; POLYSACCHARIDES; SACCHARIDES; THERMOCHEMICAL PROCESSES; 090900* - Biomass Fuels- Processing- (1990-)

Citation Formats

Mok, W S.L., Antal, Jr, M J, Szabo, P, Varhegyi, G, and Zelei, B. Formation of charcoal from biomass in a sealed reactor. United States: N. p., 1992. Web. doi:10.1021/ie00004a027.
Mok, W S.L., Antal, Jr, M J, Szabo, P, Varhegyi, G, & Zelei, B. Formation of charcoal from biomass in a sealed reactor. United States. https://doi.org/10.1021/ie00004a027
Mok, W S.L., Antal, Jr, M J, Szabo, P, Varhegyi, G, and Zelei, B. Wed . "Formation of charcoal from biomass in a sealed reactor". United States. https://doi.org/10.1021/ie00004a027.
@article{osti_7025098,
title = {Formation of charcoal from biomass in a sealed reactor},
author = {Mok, W S.L. and Antal, Jr, M J and Szabo, P and Varhegyi, G and Zelei, B},
abstractNote = {In this paper, samples o cellulose, hemicellulose, lignin, and nine species of whole biomass are pyrolyzed in sealed reactors. Very high charcoal yields (e.g., 40% from cellulose, 48% from Eucalyptus gummifera) were obtained. Higher sample loading (sample mass per unit reactor volume) increased charcoal yield and the associated exothermic heat release and lowered the reaction onset temperature. These effects were induced by the vapor-phase concentrations of the volatile products, and not the system pressure. Addition of water catalyzed the reaction and increased the char yield. These observations suggest that charcoal formation is autocatalyzed by water, an initial pyrolysis product. When whole biomass was used as a feedstock, higher charcoal yields were obtained from species with high lignin and/or low hemicellulose content.},
doi = {10.1021/ie00004a027},
url = {https://www.osti.gov/biblio/7025098}, journal = {Industrial and Engineering Chemistry Research; (United States)},
issn = {0888-5885},
number = 4,
volume = 31:4,
place = {United States},
year = {1992},
month = {4}
}