Modeling of adsorption equilibria in supercritical fluids

被引：9
作者：
Jha, SK [1 ]
Madras, G [1 ]
机构：
[1] Indian Inst Sci, Dept Chem Engn, Bangalore 560012, Karnataka, India
来源：
JOURNAL OF SUPERCRITICAL FLUIDS | 2004年 / 32卷 / 1-3期
关键词：
adsorption; capacity factor; supercritical fluids; solubility; binary interaction parameter;
D O I：
10.1016/j.supflu.2003.12.010
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The adsorption equilibrium of various solutes on different solid matrices in supercritical carbon dioxide was modeled. The solutes were naphthalene, hexachlorobenzene, pentachlorophenol, salicylic acid, DDT, biphenyl, anthracene and 2,6-dimethyl naphthalene. The solid matrices were soil, activated carbon, ODS, ODS-2 and NaY-Type zeolite. The model is based on numerical integration of the differential equations that express the isothermal and isobaric dependence of the adsorption equilibrium constant. The residual infinite dilution partial molar enthalpy of the solutes in supercritical fluids was determined by the Peng-Robinson equation of state with quadratic mixing rules. Based on the observation that the heat of adsorption was independent of the solute, it was shown that the adsorption equilibrium constant at various temperatures and pressures could be predicted based on a single experimental adsorption isotherm. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：161 / 166
页数：6
相关论文
共 41 条
[11]   SUPERCRITICAL CARBON-DIOXIDE EXTRACTION OF ORGANICS FROM SOIL [J].
ERKEY, C ;
MADRAS, G ;
OREJUELA, M ;
AKGERMAN, A .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1993, 27 (06) :1225-1231
[12]   Modeling of ternary solubilities of organics in supercritical carbon dioxide [J].
Guha, S ;
Madras, G .
FLUID PHASE EQUILIBRIA, 2001, 187 (187-188) :255-264
[13]   SOLUBILITY OF ORTHO-HYDROXYBENZOIC ACID IN SUPERCRITICAL CARBON-DIOXIDE [J].
GURDIAL, GS ;
FOSTER, NR .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1991, 30 (03) :575-580
[14]   A comparison of supercritical carbon dioxide and organic solvents for the intercalation of 4-phenylazoaniline into a pillared clay mineral [J].
Ishii, R ;
Wada, H ;
Ooi, K .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2002, 254 (02) :250-256
[15]   Adsorption of Supercritical carbon dioxide plus 2,6- and 2,7-dimethylnaphthalene isomers on NaY-type zeolite [J].
Iwai, Y ;
Higuchi, M ;
Nishioka, H ;
Takahashi, Y ;
Arai, Y .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2003, 42 (21) :5261-5267
[16]   NEAR-CRITICAL PHENOMENA AND RESOLUTION IN SUPERCRITICAL FLUID CHROMATOGRAPHY [J].
KELLEY, FD ;
CHIMOWITZ, EH .
AICHE JOURNAL, 1990, 36 (08) :1163-1175
[17]   Polymerizations in supercritical carbon dioxide [J].
Kendall, JL ;
Canelas, DA ;
Young, JL ;
DeSimone, JM .
CHEMICAL REVIEWS, 1999, 99 (02) :543-563
[18]   An experimental study of supercritical adsorption equilibria of salicylic acid on activated carbon [J].
Kikic, I ;
Alessi, P ;
Cortesi, A ;
Macnaughton, SJ ;
Foster, NR ;
Spicka, B .
FLUID PHASE EQUILIBRIA, 1996, 117 (1-2) :304-311
[19]  
KNOWLES DE, 2000, P INT S FUELS LUBR N, P367
[20]   SOLUBILITY OF SOLIDS IN SUPERCRITICAL CARBON-DIOXIDE AND ETHYLENE [J].
KURNIK, RT ;
HOLLA, SJ ;
REID, RC .
JOURNAL OF CHEMICAL AND ENGINEERING DATA, 1981, 26 (01) :47-51
12345