Adsorption characteristics of benzene on resin-based activated carbon under humid conditions

Ji Young Oh, Young Woo You, Junbeam Park, Ji Sook Hong, Iljeong Heo, Chang Ha Lee, Jeong Kwon Suh

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

VOCs removal under humid conditions is an important issue in the various industries. However, adsorption capacity of commercial coconut-shell–based activated carbon (CAC) is diminished considerably in high relative humidity. In this study, we prepared resin-based activated carbon (RAC) from strong cation-exchange resins consisting of polystyrene with divinylbenzene, and investigated benzene adsorption characteristics under humid conditions. The results of water isotherm and breakthrough experiments revealed that RAC adsorbed no water vapor in low P/P0 region and the amount of adsorbed benzene did not decrease significantly with the addition of water vapor, indicating high water resistance compared to CAC. This high resistance of RAC to water vapor can be contributed by the low content of hydrophilic sites (metal impurity and surface oxygen), confirmed by XPS and ICP results. The relationship between RAC porosity and benzene adsorption under humid conditions was also investigated. Benzene adsorption under humid conditions was influenced significantly by the narrow micropore volume of RAC. As the narrow micropore volume of RAC decreased, the adsorption of water vapor was inhibited, so that the decline in the time of breakthrough at relative humidity at 70% was considerably alleviated from 44 to 1.2%.

Original languageEnglish
Pages (from-to)242-249
Number of pages8
JournalJournal of Industrial and Engineering Chemistry
Volume71
DOIs
Publication statusPublished - 2019 Mar 25

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Benzene
Activated carbon
Resins
Adsorption
Steam
Water vapor
divinyl benzene
Atmospheric humidity
Cation Exchange Resins
Water
Polystyrenes
Volatile organic compounds
Isotherms
Ion exchange
X ray photoelectron spectroscopy
Porosity
Positive ions
Metals
Impurities
Oxygen

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

Cite this

Oh, Ji Young ; You, Young Woo ; Park, Junbeam ; Hong, Ji Sook ; Heo, Iljeong ; Lee, Chang Ha ; Suh, Jeong Kwon. / Adsorption characteristics of benzene on resin-based activated carbon under humid conditions. In: Journal of Industrial and Engineering Chemistry. 2019 ; Vol. 71. pp. 242-249.
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Adsorption characteristics of benzene on resin-based activated carbon under humid conditions. / Oh, Ji Young; You, Young Woo; Park, Junbeam; Hong, Ji Sook; Heo, Iljeong; Lee, Chang Ha; Suh, Jeong Kwon.

In: Journal of Industrial and Engineering Chemistry, Vol. 71, 25.03.2019, p. 242-249.

Research output: Contribution to journalArticle

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AU - Suh, Jeong Kwon

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