| Electrochemical antimony removal from accumulator acid: Results from removal trials in laboratory cells. | |
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MedLine Citation:
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PMID: 21978586 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Regeneration of spent accumulator acid could be an alternative process for crystallization, neutralisation and disposal. Therefore, for the first time in a study of the possibilities of electrochemical removal of antimony and accumulator acid regeneration on a laboratory scale, two synthetic and several real systems containing sulfuric acid of concentrations ranging between 28% and 36%, and antimony species were tested. Discontinuous electrochemical reactors with anion exchange membranes were successfully used in these experiments, which were conducted at a temperature of 35°C. Removal of antimony using cells that were not divided by a separator, however, was not possible. In selected experiments, by varying the electrode material, type of electrolyte, and cell current, the concentration of antimony could be reduced from the range of 5ppm to 0.15ppm. This resulted in current efficiencies between 0.00002% and 0.001%, and in specific electroenergy demands between 100WhL(-1) and 2000WhL(-1). In other experiments on substances with antimony contents up to 3500mgL(-1), the current efficiencies obtained were more than a thousandfold higher. In contrast to the formally high relative energy consumption parameters absolute demand parameters are relatively small and favour the electrochemical method in small scale application. Besides plate electrodes, 3D-cathodes were used. Copper- and graphite cathodes produced the best results. |
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Authors:
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M E Henry Bergmann; A Savas Koparal |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-9-12 |
Journal Detail:
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Title: Journal of hazardous materials Volume: - ISSN: 1873-3336 ISO Abbreviation: - Publication Date: 2011 Sep |
Date Detail:
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Created Date: 2011-10-7 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9422688 Medline TA: J Hazard Mater Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Elsevier B.V. All rights reserved. |
Affiliation:
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Hochschule Anhalt, FB 6/7, Bernburger Str. 55, D-06366 Koethen/Anh., Germany. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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