Considerations about the correct evaluation of sorption thermodynamic parameters from equilibrium isotherms

被引：154

作者：

Salvestrini, Stefano ^{[1
]}

Leone, Vincenzo ^{[1
]}

Iovino, Pasquale ^{[1
]}

Canzano, Silvana ^{[1
]}

Capasso, Sante ^{[1
]}

机构：

[1] Univ Naples 2, Dept Environm Biol & Pharmaceut Sci & Technol, I-81100 Caserta, Italy

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2014年 / 68卷

关键词：

Sorption; Sorption isotherms; Thermodynamic parameters; Standard state; Isosteric heat; AQUEOUS-SOLUTION; ADSORPTION CHARACTERISTICS; HUMIC-ACID; KINETICS; CALORIMETRY; CHITOSAN; REMOVAL; MODELS; PHENOL;

D O I：

10.1016/j.jct.2013.09.013

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This is a comparative analysis of popular methods currently in use to derive sorption thermodynamic parameters from temperature dependence of sorption isotherms. It is emphasized that the standard and isosteric thermodynamic parameters have sharply different meanings. Moreover, it is shown with examples how the sorption model adopted conditions the standard state and consequently the value of Delta G degrees and Delta S degrees. These trivial but often neglected aspects should carefully be considered when comparing thermodynamic parameters from different literature sources. An effort by the scientific community is needed to define criteria for the choice of the standard state in sorption processes. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：310 / 316

页数：7

共 38 条

[1]

Adamson A.W., 1967, Physical Chemistry of Surfaces

[2]

Atkins P., 1994, PHYS CHEM

[3]

Balcke G.U., 2002, USE HUMIC SUBSTANCES, P203

[4] The description of sorption curves [J].

Barrow, N. J. .

EUROPEAN JOURNAL OF SOIL SCIENCE, 2008, 59 (05) :900-910

[5]

Capasso S, 2007, STUD SURF SCI CATAL, V170, P2122

[6] Sorption of humic acids on zeolitic tuffs [J].

Capasso, Sante ;

Coppola, Elio ;

Iovino, Pasquale ;

Salvestrini, Stefano ;

Colella, Carmine .

MICROPOROUS AND MESOPOROUS MATERIALS, 2007, 105 (03) :324-328

[7] Adsorption thermodynamics, kinetics and isosteric heat of adsorption of malachite green onto chemically modified rice husk [J].

Chowdhury, Shamik ;

Mishra, Rahul ;

Saha, Papita ;

Kushwaha, Praveen .

DESALINATION, 2011, 265 (1-3) :159-168

[8]

Cooney D.O., 1998, ADSORPTION DESIGN WA

[9] Separation of Malachite Green and Methyl Green cationic dyes from aqueous medium by adsorption on Amberlite XAD-2 and XAD-4 resins using sodium dodecylsulfate as carrier [J].

dos Reis, Luis Gustavo T. ;

Robaina, Nicolle F. ;

Pacheco, Wagner F. ;

Cassella, Ricardo J. .

CHEMICAL ENGINEERING JOURNAL, 2011, 171 (02) :532-540

[10] Experimental and isotherm-models analysis on TCE and PCE adsorption onto activated carbon [J].

Erto, A. ;

Andreozzi, R. ;

Di Natale, F. ;

Lancia, A. ;

Musmarra, D. .

ICHEAP-9: 9TH INTERNATIONAL CONFERENCE ON CHEMICAL AND PROCESS ENGINEERING, PTS 1-3, 2009, 17 :293-+

← 1 2 3 4 →