Document Detail


The adsorption of benzene and methylethylketone onto activated carbon: thermodynamic aspects.
MedLine Citation:
PMID:  11806527     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The adsorption of volatile organic compounds (VOCs), exemplified by benzene and methylethylketone (MEK), onto seven different types of activated carbon was investigated. Results show that for benzene adsorption the adsorption characteristic energy, enthalpy, free energy and entropy are in the range 17.12-36.86, -20.8 to -44.7, -11.89 to -16.22 kJ/mole and -29.4 to -85.3 J/mole/K, respectively. For the adsorption of MEK, the adsorption characteristic energy, enthalpy, free energy and entropy are in the range 14.47-32.34, -18.3 to -40.8, -10.78 to -15.56 kJ/mole and -24.8 to approximately -60.3 J/mole/K, respectively. The adsorption enthalpy can be calculated indirectly from statistical thermodynamic method and directly from the immersion enthalpy method. The adsorption characteristic energy is calculated by the Dubinin-Astokhov equation. The free energy is calculated by the measured equilibrium adsorption constant.
Authors:
H L Chiang; C P Huang; P C Chiang
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Chemosphere     Volume:  46     ISSN:  0045-6535     ISO Abbreviation:  Chemosphere     Publication Date:  2002 Jan 
Date Detail:
Created Date:  2002-01-24     Completed Date:  2002-05-10     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0320657     Medline TA:  Chemosphere     Country:  England    
Other Details:
Languages:  eng     Pagination:  143-52     Citation Subset:  IM    
Affiliation:
Department of Environmental Engineering, Fooyin Institute of Technology, Kaoshsiung Hsien, Taiwan, ROC.
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MeSH Terms
Descriptor/Qualifier:
Adsorption / drug effects
Algorithms
Benzene / chemistry,  isolation & purification,  metabolism*
Butanones / chemistry,  isolation & purification,  metabolism*
Charcoal / pharmacology*
Statistics as Topic
Thermodynamics
Volatilization
Chemical
Reg. No./Substance:
0/Butanones; 16291-96-6/Charcoal; 71-43-2/Benzene; 78-93-3/methylethyl ketone

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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