Document Detail


Removal of basic (Methylene Blue) and acid (Egacid Orange) dyes from waters by sorption on chemically treated wood shavings.
MedLine Citation:
PMID:  18848777     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Spruce wood shavings from Picea abies were used for an adsorptive removal of both basic as well as acid dyes from waters. The sorption properties of the sorbents were modified with HCl, Na(2)CO(3) and Na(2)HPO(4). The treatment of the wood sorbents with alkaline carbonate solution as well as with phosphate solution increased the sorption ability for the basic dye (Methylene Blue), whereas the treatment with mineral acid decreased the sorption ability for Methylene Blue to some extent. The opposite is true for the sorption of the acid dye--Egacid Orange. The maximum sorption capacities estimated from the Langmuir-Freundlich isotherms ranged from 0.060 to 0.165 mmol g(-1) for Methylene Blue, and from 0.045 to 0.513 mmol g(-1) for Egacid Orange. The basic dye sorption decreased at low pH values in accordance with a presupposed ion-exchange mechanism of the sorption. The sorption of acid dye, on the other hand, decreased with increasing pH. The presence of inorganic salts as well as surfactants exhibited only minor effects on the dye sorption.
Authors:
Pavel Janos; Sezen Coskun; Vera Pilarová; Jaroslav Rejnek
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-10-10
Journal Detail:
Title:  Bioresource technology     Volume:  100     ISSN:  1873-2976     ISO Abbreviation:  Bioresour. Technol.     Publication Date:  2009 Feb 
Date Detail:
Created Date:  2008-11-12     Completed Date:  2008-12-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  1450-3     Citation Subset:  IM    
Affiliation:
Faculty of the Environment, University of Jan Evangelista Purkyne, Ustí nad Labem, Czech Republic. pavel.janos@ujep.cz
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MeSH Terms
Descriptor/Qualifier:
Absorption
Acids / isolation & purification
Alkalies / isolation & purification
Coloring Agents / isolation & purification*
Methylene Blue / isolation & purification*
Picea / chemistry*
Water / chemistry*
Water Pollutants, Chemical / isolation & purification*
Water Purification / methods*
Wood / chemistry*
Chemical
Reg. No./Substance:
0/Acids; 0/Alkalies; 0/Coloring Agents; 0/Water Pollutants, Chemical; 61-73-4/Methylene Blue; 7732-18-5/Water

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


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