Equilibria and dynamics for mixed vapors of BTX in an activated carbon bed

Jeong Ho Yun, Dae Ki Choi, Sung Hyun Kim

Research output: Contribution to journalArticle

63 Citations (Scopus)

Abstract

Experimental and theoretical studies were made on the adsorption of benzene, toluene, p-xylene, and their binary and ternary mixtures by activated carbon in an isothermal condition of 303 K. Experimental isotherms for pure components were measured by two kinds of experimental techniques: the static volumetric method and breakthrough data analysis. Breakthrough data analysis shows that both the extended Langmuir equation and the ideal adsorbed solution theory could explain mixture isotherm data with good accuracy. In addition, a mathematical model was developed to simulate the column dynamics of pure and mixed-vapor adsorption systems. To represent the mass-transfer rate inside the adsorbent particle, the linear driving-force approximation model was applied. By optimizing the pure- and the binary- component breakthrough curve data with a dynamic model, an empirical correlation was proposed to represent the overall mass-transfer rates for the BTX vapor-activated carbon system. Results with this correlation, which is a function of the partial pressures for each adsorbate and interstitial bulk fluid velocities, showed that the prediction agrees well with the experimental data of ternary breakthrough curves.

Original languageEnglish
Pages (from-to)751-760
Number of pages10
JournalAICHE Journal
Volume45
Issue number4
Publication statusPublished - 1999 Apr 1

Fingerprint

Activated carbon
Adsorption
Isotherms
Theoretical Models
Carbon
Mass transfer
Vapors
Partial Pressure
Extracellular Fluid
Toluene
Adsorbates
Xylene
Benzene
Partial pressure
Adsorbents
Dynamic models
Mathematical models
Fluids
4-xylene

ASJC Scopus subject areas

  • Biotechnology
  • Chemical Engineering(all)
  • Mechanical Engineering
  • Environmental Engineering
  • Polymers and Plastics

Cite this

Equilibria and dynamics for mixed vapors of BTX in an activated carbon bed. / Yun, Jeong Ho; Choi, Dae Ki; Kim, Sung Hyun.

In: AICHE Journal, Vol. 45, No. 4, 01.04.1999, p. 751-760.

Research output: Contribution to journalArticle

Yun, Jeong Ho ; Choi, Dae Ki ; Kim, Sung Hyun. / Equilibria and dynamics for mixed vapors of BTX in an activated carbon bed. In: AICHE Journal. 1999 ; Vol. 45, No. 4. pp. 751-760.
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