Thermal behaviors and regeneration of activated carbon saturated with toluene induced by microwave irradiation

Maosheng Chen*, Jun Huang, Jianhong Wang, Ping Ning, Yijiao Jiang, Yan Xu

*Corresponding author for this work

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Microwave irradiation is an effective way to regenerate the activated carbon after adsorption and separation of waste. In this work, activated carbon saturated with toluene was efficiently regenerated by microwave irradiation. The maximum regeneration ratio of 77.2% was obtained under the following optimal operation conditions: saturated activated carbon of 5.01 g, microwave power of 500 W, carrier gas N2 flow of 60 mL/min, and microwave irradiation time of 180 s. It was found that the higher microwave power may result in self-burning of activated carbon due to the presence of traces of oxygen, which might slightly deteriorate the pore structures of activated carbon. On the other hand, the lower microwave power cannot start desorption of toluene or might cause re-adsorption. The introduction of N2 flow during regeneration was necessary to release the desorbed toluene from activated carbon, but it might cool the adsorption system under a much higher N2 flow rate.

Original languageEnglish
Pages (from-to)325-329
Number of pages5
JournalJournal of Chemical Engineering of Japan
Volume42
Issue number5
DOIs
Publication statusPublished - 2009
Externally publishedYes

Keywords

  • Activated carbon
  • Microwave irradiation
  • Regeneration
  • Toluene

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