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Regeneration of activated carbon. Part II: Gasification kinetics with steam
Author(s) -
Umehara Tadashi,
Harriott Peter,
Smith J. M.
Publication year - 1983
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690290507
Subject(s) - activated carbon , chemistry , adsorption , kinetics , chemical engineering , catalysis , residue (chemistry) , carbon fibers , partial pressure , organic chemistry , materials science , composite material , oxygen , physics , quantum mechanics , composite number , engineering
The kinetics of the reaction between steam and thermally‐regenerated activated carbon containing DBS residue was studied at 973 to 1,062 K and atmospheric pressure. The results fit a Langmuir‐Hinshelwood rate equation originally developed for the oxidation of other types of carbon with steam. The rates of reaction were relatively high. Auxiliary experiments with added Na 2 SO 4 indicated that the non‐volatile inorganic residue from DBS has a catalytic effect. Readsorption measurements on regenerated samples demonstrated that thermal regeneration alone resulted in considerable loss (35%) in adsorption capacity but that thermal regeneration followed by steam gasification could completely restore the adsorption capacity for DBS on the remaining virgin carbon.