| Removal of Pb from a calcareous soil during EDTA-enhanced electrokinetic extraction. | |
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MedLine Citation:
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PMID: 16198669 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Electrokinetic extraction has been tested to remove lead from an Algerian contaminated soil ([Pb] = 4.432 +/- 0.275 mg g(-1)) sited near a battery plant. The effect of EDTA at various concentrations (0.05-0.20 M) on the enhancement of lead transport has been studied by applying a constant voltage corresponding to a nominal electric field strength of 1 V cm(-1) (duration: 240 h). Results of contaminant distribution across the experimental cell have shown efficient transport of lead toward the anode despite the presence of calcite (25%) and the high acid/base buffer capacity of the soil. To avoid ligand loss, which would be anodically oxidized, the cell was modified by adding extra compartments and inserting cation exchange membranes (Neosepta CMX). Thus, simultaneous recovery of EDTA and lead from their chelated solutions has been made possible using the same set-up and by controlling fluids chemistry. |
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Authors:
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S Amrate; D E Akretche; C Innocent; P Seta |
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Publication Detail:
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Type: Journal Article Date: 2005-02-19 |
Journal Detail:
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Title: The Science of the total environment Volume: 349 ISSN: 0048-9697 ISO Abbreviation: Sci. Total Environ. Publication Date: 2005 Oct |
Date Detail:
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Created Date: 2005-10-03 Completed Date: 2005-12-21 Revised Date: 2006-04-17 |
Medline Journal Info:
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Nlm Unique ID: 0330500 Medline TA: Sci Total Environ Country: Netherlands |
Other Details:
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Languages: eng Pagination: 56-66 Citation Subset: IM |
Affiliation:
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Laboratory of Hydrometallurgy and Molecular Inorganic Chemistry, Faculty of Chemistry, University of Science and Technology Houari Boumediene (USTHB), Bab-Ezzouar, Algiers, Algeria. salim_amrate@yahoo.fr |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Cation Exchange Resins Chelating Agents / chemistry*, isolation & purification Edetic Acid / chemistry*, isolation & purification Electrochemistry Industrial Waste Kinetics Lead / chemistry, isolation & purification* Soil / analysis Soil Pollutants / isolation & purification* Waste Management / methods* |
| Chemical | |
Reg. No./Substance:
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0/Cation Exchange Resins; 0/Chelating Agents; 0/Industrial Waste; 0/Soil; 0/Soil Pollutants; 60-00-4/Edetic Acid; 7439-92-1/Lead |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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