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 language | English |
|---|---|
| Pages (from-to) | 242-249 |
| Number of pages | 8 |
| Journal | Journal of Industrial and Engineering Chemistry |
| Volume | 71 |
| DOIs | |
| Publication status | Published - 2019 Mar 25 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
Cite this
}
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 journal › Article
TY - JOUR
T1 - Adsorption characteristics of benzene on resin-based activated carbon under humid conditions
AU - Oh, Ji Young
AU - You, Young Woo
AU - Park, Junbeam
AU - Hong, Ji Sook
AU - Heo, Iljeong
AU - Lee, Chang Ha
AU - Suh, Jeong Kwon
PY - 2019/3/25
Y1 - 2019/3/25
N2 - 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%.
AB - 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%.
UR - http://www.scopus.com/inward/record.url?scp=85057629092&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85057629092&partnerID=8YFLogxK
U2 - 10.1016/j.jiec.2018.11.032
DO - 10.1016/j.jiec.2018.11.032
M3 - Article
AN - SCOPUS:85057629092
VL - 71
SP - 242
EP - 249
JO - Journal of Industrial and Engineering Chemistry
JF - Journal of Industrial and Engineering Chemistry
SN - 1226-086X
ER -