TY - JOUR
T1 - Desorption behavior of various volatile organic compounds from activated carbon in supercritical carbon dioxide
T2 - Measurement and kinetic modeling
AU - Ushiki, Ikuo
AU - Kikuchi, Koichi
AU - Takahashi, Naoto
AU - Sato, Yoshiyuki
AU - Ito, Yasuyuki
AU - Inomata, Hiroshi
N1 - Funding Information:
This research was financially supported by the JSPS (Japan Society for the Promotion of Science) KAKENHI (No: 25289271 and 16K18273 ). I. U. is a JSPS Research Fellow (PD) and has received financial support from the JSPS Research Fellowships for Young Scientists (No. 15J02431 ).
Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2017/3/1
Y1 - 2017/3/1
N2 - The desorption behavior of various volatile organic compounds (VOCs: toluene, acetone, n-hexane, n-octane, methanol, ethanol, 2-propanol, and propylene glycol monomethyl ether) from activated carbon was measured in supercritical carbon dioxide (scCO2) using the fixed-bed method at 313–353 K and 10.0–15.0 MPa. The measured behavior strongly depended on the type of VOC, and the CO2 density and volatility of the VOCs were the primary factors influencing this behavior. The desorption behavior was correlated with a kinetic model that assumed material balances in the bulk and pore phases with local adsorption equilibria in the adsorbed phase. The fitting parameters determined using these correlations were reasonably explained by the CO2 density and properties of VOCs, and they provided quantitative information about the desorption phenomena in scCO2.
AB - The desorption behavior of various volatile organic compounds (VOCs: toluene, acetone, n-hexane, n-octane, methanol, ethanol, 2-propanol, and propylene glycol monomethyl ether) from activated carbon was measured in supercritical carbon dioxide (scCO2) using the fixed-bed method at 313–353 K and 10.0–15.0 MPa. The measured behavior strongly depended on the type of VOC, and the CO2 density and volatility of the VOCs were the primary factors influencing this behavior. The desorption behavior was correlated with a kinetic model that assumed material balances in the bulk and pore phases with local adsorption equilibria in the adsorbed phase. The fitting parameters determined using these correlations were reasonably explained by the CO2 density and properties of VOCs, and they provided quantitative information about the desorption phenomena in scCO2.
KW - Activated carbon
KW - Desorption
KW - Extraction
KW - Kinetic model
KW - Regeneration
KW - Supercritical carbon dioxide
KW - Volatile organic compounds (VOCs)
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U2 - 10.1016/j.supflu.2016.11.007
DO - 10.1016/j.supflu.2016.11.007
M3 - Article
AN - SCOPUS:84998678865
SN - 0896-8446
VL - 121
SP - 41
EP - 51
JO - Journal of Supercritical Fluids
JF - Journal of Supercritical Fluids
ER -