Document Detail


Predictions of binary sorption isotherms for the sorption of heavy metals by pine bark using single isotherm data.
MedLine Citation:
PMID:  10834365     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The adsorption of three heavy metal ions by pine bark was studied. The study was divided into two parts; single component adsorption of the metals Cu2+, Cd2+ and Ni2+ and bisolute adsorption of the three binary systems Cu2+-Cd2+, Cu2+-Ni2+ and Cd2+-Ni2+. Extended Langmuir model, extended Freundlich model. Sips model and ideal adsorption solution theory (IAST) models were used to predict the equilibrium uptake for Cu2+, Cd2+ and Ni2+ in the binary diluted solutions using the single adsorption constants. The experimental data of single isotherm adsorption process were found to follow Langmuir isotherm model with less accuracy than Freundlich and Sips models. Whereas, the predictions of bisolute adsorption isotherms of the mentioned three systems, Cu2+-Cd2+, Cu2+-Ni2+ and Cd2+-Ni2+, showed good agreement with experimental data when using Extended-Langmuir, Extended-Freundlich and IAST. However, the only good fit of the Sips model was with the Cu2+-Cd2+ system.
Authors:
S Al-Asheh; F Banat; R Al-Omari; Z Duvnjak
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Chemosphere     Volume:  41     ISSN:  0045-6535     ISO Abbreviation:  Chemosphere     Publication Date:  2000 Sep 
Date Detail:
Created Date:  2000-08-31     Completed Date:  2000-08-31     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0320657     Medline TA:  Chemosphere     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  659-65     Citation Subset:  IM    
Affiliation:
Department of Chemical Engineering, Jordan University of Science and Technology, Irbid. alasheh@just.edu.com
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MeSH Terms
Descriptor/Qualifier:
Adsorption
Metals, Heavy / chemistry,  pharmacokinetics*
Models, Chemical
Trees / metabolism*
Chemical
Reg. No./Substance:
0/Metals, Heavy

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


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