Desorption of phenol from activated carbon by hot water regeneration. Desorption isotherms

Journal Article · Sun Dec 01 04:00:00 EST 1996 · Industrial and Engineering Chemistry Research

DOI:https://doi.org/10.1021/ie960208m· OSTI ID:419851

Bercic, G; Pintar, A ^[1]; Levec, J ^[2]

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1. National Inst. of Chemistry, Ljubljana (Slovenia). Lab. for Catalysis and Chemical Reaction Engineering
2. Univ. of Ljubljana (Slovenia). Dept. of Chemical Engineering

Adsorption of phenol from aqueous solutions at high temperatures on activated carbon was studied. The adsorption capacities were determined by the semicontinuous desorption experiments carried out in a fixed bed adsorber, which was operated in liquid-full mode at a pressure of 25 bar and at temperatures up to 190 C. It was found that in the range of phenol concentrations from 0.005 to 30 g/L the five-parameter Redlich-Petersen adsorption model is equivalent to the six-parameter Fritz-Schluender adsorption model when describing liquid-solid adsorption on the Filtrasorb (F-400) activated carbon. By hot water regeneration, 95% recovery of initial adsorption capacity of activated carbon was obtained. It is also demonstrated that the proposed experimental method for determination of adsorption capacities at high temperatures can be used as an alternative to the traditional method by taking breakthrough curves.

• OSTI ID: 419851
• Journal Information: Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 12 Vol. 35; ISSN IECRED; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
54 ENVIRONMENTAL SCIENCES
ACTIVATED CARBON
ADSORPTION
ADSORPTION ISOTHERMS
DESORPTION
MATHEMATICAL MODELS
PHENOL
REGENERATION
SORPTIVE PROPERTIES
WASTE WATER
WATER TREATMENT