TY - JOUR
T1 - Adsorption equilibria of VOCs (n-octane, propylene glycol monomethyl ether, ethanol, and 2-propanol) on activated carbon under supercritical carbon dioxide conditions
AU - Ushiki, Ikuo
AU - Kikuchi, Koichi
AU - Sato, Yoshiyuki
AU - Ito, Yasuyuki
AU - Takishima, Shigeki
AU - Inomata, Hiroshi
N1 - Funding Information:
This research was financially supported by the JSPS ( Japan Society for the Promotion of Science ) KAKENHI ( 16K18273 ).
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/4/25
Y1 - 2018/4/25
N2 - Adsorption equilibria of volatile organic compounds (VOCs: n-octane, propylene glycol monomethyl ether, ethanol, and 2-propanol) on activated carbon were measured using the fixed-bed method under supercritical carbon dioxide (scCO2) conditions at 313–353 K and 10.0–15.0 MPa. The measured adsorption isotherms strongly depended on the properties of the VOCs together with the CO2 density. The adsorption equilibria were correlated using the Dubinin–Astakhov (DA) equation with two fitting parameters: EVOC (the interaction energy between VOC and adsorbent) and W0,VOC (the saturated adsorption capacity of VOC). The fitting parameters provided insight into the adsorption phenomena of VOCs in scCO2 in terms of the CO2 density and properties of VOCs.
AB - Adsorption equilibria of volatile organic compounds (VOCs: n-octane, propylene glycol monomethyl ether, ethanol, and 2-propanol) on activated carbon were measured using the fixed-bed method under supercritical carbon dioxide (scCO2) conditions at 313–353 K and 10.0–15.0 MPa. The measured adsorption isotherms strongly depended on the properties of the VOCs together with the CO2 density. The adsorption equilibria were correlated using the Dubinin–Astakhov (DA) equation with two fitting parameters: EVOC (the interaction energy between VOC and adsorbent) and W0,VOC (the saturated adsorption capacity of VOC). The fitting parameters provided insight into the adsorption phenomena of VOCs in scCO2 in terms of the CO2 density and properties of VOCs.
KW - Activated carbon
KW - Adsorption equilibria
KW - Dubinin–Astakhov equation
KW - Supercritical carbon dioxide
KW - Volatile organic compounds (VOCs)
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U2 - 10.1016/j.fluid.2018.01.027
DO - 10.1016/j.fluid.2018.01.027
M3 - Article
AN - SCOPUS:85041471638
SN - 0378-3812
VL - 462
SP - 59
EP - 64
JO - Fluid Phase Equilibria
JF - Fluid Phase Equilibria
ER -