Regeneration of carbon containing sodium dodecylbenzene sulfonate--Cyclic regeneration with steam in fluidized beds

Journal Article · Thu Mar 01 00:00:00 EST 1984 · AIChE J.; (United States)

DOI:https://doi.org/10.1002/aic.690300202· OSTI ID:6744680

Umehara, T; Smith, J M

Cyclic regeneration of activated carbon containing adsorbed sodium dodecylbenzene sulfonate (DBS) was studied in fluidized beds at 1119 K and 101.3 kPa. Optimum restorationof 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.

• Research Organization: Univ. of California, Davis, CA 95616
• OSTI ID: 6744680
• Journal Information: AIChE J.; (United States), Vol. 30:2
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
ACTIVATED CARBON
CHEMICAL ACTIVATION
REGENERATION
SORPTIVE PROPERTIES
ABS
ADSORPTION
COMPARATIVE EVALUATIONS
DESORPTION
EVAPORATION
FLUIDIZED BED
LOW PRESSURE
OPTIMIZATION
RESIDUES
SACCHAROSE
SODIUM COMPOUNDS
STEAM
VERY HIGH TEMPERATURE
ADSORBENTS
ALKALI METAL COMPOUNDS
CARBOHYDRATES
CARBON
DISACCHARIDES
ELEMENTS
ESTERS
NONMETALS
OLIGOSACCHARIDES
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PHASE TRANSFORMATIONS
SACCHARIDES
SORPTION
SULFONIC ACID ESTERS
SURFACE PROPERTIES
010402* - Coal
Lignite
& Peat- Purification & Upgrading