Adsorption Equilibria of Benzene On Activated Carbon in the Presence of Supercritical Carbon Dioxide

Hideki Shojibara, Yoshiyuki Sato, Shigeki Takishima, Hirokatsu Masuoka

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

The adsorption equilibrium loadings of benzene on Toyo Calgon’s BPL activated carbon in the presence of supercritical carbon dioxide were measured by time integration of the breakthrough curves at temperatures of 313.2 and 333.2 K and pressures from 0.99 to 11.87MPa. The benzene loadings were observed to decrease with increasing pressure, even at low pressures far below the critical point, implying the effect of carbon dioxide adsorption over the amount of adsorbed benzene and solvent power of carbon dioxide. The equilibrium data were correlated by the Dubinin-Astakhov equation. Inclusion of pressure dependence in two parameters was found to be necessary in order to apply the pure component Dubinin-Astakhov equation to the studied system.

Original languageEnglish
Pages (from-to)245-249
Number of pages5
JournalJOURNAL of CHEMICAL ENGINEERING of JAPAN
Volume28
Issue number3
DOIs
Publication statusPublished - 1995

Keywords

  • Activated Carbon
  • Adsorption
  • Benzene
  • Dubinin-Astakhov Equation
  • High Pressure
  • Supercritical Carbon Dioxide

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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