Document Detail


Removal of naphthalene from aqueous solution on chemically modified activated carbons.
MedLine Citation:
PMID:  17126375     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The aim of this work was to correlate the textural and chemical features of carbonaceous adsorbents with the adsorption capacity of naphthalene from aqueous phase, at the concentration in which this compound is usually found in wastewater from coke ovens. The study reveals that the adsorption capacity in different carbon materials depends not only on the textural characteristics of the material but also on the functionalities of the activated carbons. The micropores of the adsorbents, particularly those of narrower diameter, were found to be active sites for the retention of naphthalene. In contrast, the modification of the surface chemistry of the carbon materials led to a decrease in the adsorption capacities. Dispersive forces play an important role, and adsorbents with a higher non-polar character have proven to be more efficient for the naphthalene adsorption. This behaviour has been linked to the presence of specific interactions between the basal planes and the polyaromatic structure of the naphthalene molecule.
Authors:
C O Ania; B Cabal; C Pevida; A Arenillas; J B Parra; F Rubiera; J J Pis
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-11-27
Journal Detail:
Title:  Water research     Volume:  41     ISSN:  0043-1354     ISO Abbreviation:  Water Res.     Publication Date:  2007 Jan 
Date Detail:
Created Date:  2006-12-25     Completed Date:  2007-03-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0105072     Medline TA:  Water Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  333-40     Citation Subset:  IM    
Affiliation:
Instituto Nacional del Carbón, CSIC, Apartado 73, 33080 Oviedo, Spain.
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MeSH Terms
Descriptor/Qualifier:
Adsorption
Carbon / chemistry*
Coke
Naphthalenes / chemistry*
Porosity
Waste Disposal, Fluid / methods*
Water Purification / methods*
Chemical
Reg. No./Substance:
0/Coke; 0/Naphthalenes; 7440-44-0/Carbon; 91-20-3/naphthalene

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


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