A critical review of the estimation of the thermodynamic parameters on adsorption equilibria. Wrong use of equilibrium constant in the Van't Hoof equation for calculation of thermodynamic parameters of adsorption

被引:1304
作者
Lima, Eder C. [1 ]
Hosseini-Bandegharaei, Ahmad [2 ,3 ]
Moreno-Pirajan, Juan Carlos [4 ]
Anastopoulos, Ioannis [5 ]
机构
[1] Fed Univ Rio Grande Sul UFRGS, Lab Environm Technol & Analyt Chem Latama, Inst Chem, Av Bento Goncalves 9500,Postal Box 15003, BR-91501970 Porto Alegre, RS, Brazil
[2] Sabzevar Univ Med Sci, Fac Hlth, Dept Environm Hlth Engn, Sabzevar, Iran
[3] Islamic Azad Univ, Dept Engn, Kashmar Branch, POB 161, Kashmar, Iran
[4] Univ Andes, Dept Chem, Bogota, Colombia
[5] Univ Patras, Dept Chem Engn, LBEET, Patras 26504, Greece
关键词
Equilibrium constant; Van't Hoof equation; Thermodynamic parameters of adsorption; Isotherm models; FREE-ENERGY CHANGE; ACID RED 1; AQUEOUS-SOLUTION; EFFICIENT REMOVAL; ACTIVATED CARBON; LIQUID-PHASE; KINETICS; ADSORBENT; BIOSORPTION; DYE;
D O I
10.1016/j.molliq.2018.10.048
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
In the adsorption literature, the Van't Hoff equation is used in different manners without any criteria about the concepts of physical-chemistry of equilibrium for calculation of thermodynamic parameters of adsorption. Indeed, the equilibrium constant (K) should be dimensionless for being used in the Van't Hoff equation. However, this is not a simple adjustment of units, as being spread in the literature, to become K dimensionless. In this paper, it will be calculated the equilibrium constants using numeric examples and show the flaws of the thermodynamics calculations, when the value of K is wrongly calculated, and what are the expected results of the changes in enthalpy (Delta H degrees) and changes in the entropy (Delta S degrees) that are spread in the literature. (C) 2018 Published by Elsevier B.V.
引用
收藏
页码:425 / 434
页数:10
相关论文
共 57 条
  • [1] Adsorption kinetics and thermodynamics studies of gold(III) ions using thioctic acid functionalized silica coated magnetite nanoparticles
    Abd Razak, Nur Fadzilah
    Shamsuddin, Mustaffa
    Lee, Siew Ling
    [J]. CHEMICAL ENGINEERING RESEARCH & DESIGN, 2018, 130 : 18 - 28
  • [2] ADSORPTIVE MECHANISM ON ACTIVATED CARBON IN THE LIQUID-PHASE .1. FREE-ENERGY CHANGE FOR ADSORPTION OF ORGANIC-COMPOUNDS FROM AQUEOUS-SOLUTION ON ACTIVATED CARBON
    ABE, I
    HAYASHI, K
    KITAGAWA, M
    URAHATA, T
    [J]. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1979, 52 (07) : 1899 - 1904
  • [3] Application of Mangifera indica (mango) seeds as a biosorbent for removal of Victazol Orange 3R dye from aqueous solution and study of the biosorption mechanism
    Alencar, Wagner S.
    Acayanka, Elie
    Lima, Eder C.
    Royer, Betina
    de Souza, Felipe E.
    Lameira, Jeronimo
    Alves, Claudio N.
    [J]. CHEMICAL ENGINEERING JOURNAL, 2012, 209 : 577 - 588
  • [4] Application of Aqai Stalks as Biosorbents for the Removal of the Dye Procion Blue MX-R from Aqueous Solution
    Alencar, Wagner S.
    Lima, Eder C.
    Royer, Betina
    dos Santos, Bruna D.
    Calvete, Tatiana
    da Silva, Edson A.
    Alves, Claudio N.
    [J]. SEPARATION SCIENCE AND TECHNOLOGY, 2012, 47 (03) : 513 - 526
  • [5] Sorption, kinetics and thermodynamics studies of atrazine herbicide removal from water using iron nano-composite material
    Ali, I.
    ALOthman, Z. A.
    Al-Warthan, A.
    [J]. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY, 2016, 13 (02) : 733 - 742
  • [6] Artificial neural network modelling of amido black dye sorption on iron composite nano material: Kinetics and thermodynamics studies
    Ali, Imran
    Alharbi, Omar M. L.
    Alothman, Zeid A.
    Badjah, Ahmad Yacine
    Alwarthan, Abdulrahman
    Basheer, Al Arsh
    [J]. JOURNAL OF MOLECULAR LIQUIDS, 2018, 250 : 1 - 8
  • [7] Uptake of propranolol on ionic liquid iron nanocomposite adsorbent: Kinetic, thermodynamics and mechanism of adsorption
    Ali, Imran
    Alothman, Zeid A.
    Alwarthan, Abdulrahman
    [J]. JOURNAL OF MOLECULAR LIQUIDS, 2017, 236 : 205 - 213
  • [8] Molecular uptake of congo red dye from water on iron composite nano particles
    Ali, Imran
    AL-Othman, Zeid A.
    Alwarthan, Abdulrahman
    [J]. JOURNAL OF MOLECULAR LIQUIDS, 2016, 224 : 171 - 176
  • [9] Green Synthesis of Iron Nano-Impregnated Adsorbent for Fast Removal of Fluoride from Water
    Ali, Imran
    Alothman, Zeid A.
    Sanagi, Mohd Marsin
    [J]. JOURNAL OF MOLECULAR LIQUIDS, 2015, 211 : 457 - 465
  • [10] Removal of arsenic species from water by batch and column operations on bagasse fly ash
    Ali, Imran
    Al-Othman, Zeid A.
    Alwarthan, Abdulrahman
    Asim, Mohd
    Khan, Tabrez A.
    [J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2014, 21 (05) : 3218 - 3229