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Regeneration of carbon containing sodium dodecylbenzene sulfonate—cyclic regeneration with steam in fluidized beds
Author(s) -
Umehara Tadashi,
Smith J. M.
Publication year - 1984
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.690300202
Subject(s) - adsorption , chemistry , dodecylbenzene , activated carbon , benzene , carbon fibers , sucrose , sodium , pyrolysis , sulfonate , chemical engineering , fluidized bed , chromatography , organic chemistry , materials science , composite number , engineering , composite material
Cyclic regeneration of activated carbon containing adsorbed sodium dodecyl‐benzene sulfonate (DBS) was studied in fluidized beds at 1119 K and 101.3 kPa. Optimum restoration of adsorption capacity (97.2% per cycle) resulted when gasification with 21.5% steam was continued for 200 s. At that time, about 85% of the DBS added to the carbon during the adsorption process had been removed. Because of the adsorbed inorganic residue from DBS, these results are somewhat different from earlier studies with the sucrose‐carbon system. With sucrose, maximum restoration of adsorption capacity was achieved when a weight equivalent to 100% of the adsorbed sucrose was removed by thermal decomposition and steam gasification.