| Performance of an electrochemical COD (chemical oxygen demand) sensor with an electrode-surface grinding unit. | |
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MedLine Citation:
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PMID: 18049774 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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An electrochemical COD (chemical oxygen demand) sensor using an electrode-surface grinding unit was investigated. The electrolyzing (oxidizing) action of copper on an organic species was used as the basis of the COD measuring sensor. Using a simple three-electrode cell and a surface grinding unit, the organic species is activated by the catalytic action of copper and oxidized at a working electrode, poised at a positive potential. When synthetic wastewater was fed into the system, the measured Coulombic yields were found to be dependent on the COD of the synthetic wastewater. A linear correlation between the Coulombic yields and the COD of the synthetic wastewater was established (10-1000 mg L(-1)) when the electrode-surface grinding procedure was activated briefly at 8 h intervals. When various kinds of wastewater samples obtained from various sewage treatment plants were measured, linear correlations (r(2)> or = 0.92) between the measured EOD (electrochemical oxygen demand) value and COD of the samples were observed. At a practical wastewater treatment plant, the measurement system was successfully operated with high accuracy and good stability over 3 months. These experimental results show that the application of the measurement system would be a rapid and practical method for the determination of COD in water industries. |
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Authors:
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Bong Geun Jeong; Seok Min Yoon; Chang Ho Choi; Kil Koang Kwon; Moon Sik Hyun; Dong Heui Yi; Hyung Soo Park; Mia Kim; Hyung Joo Kim |
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Publication Detail:
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Type: Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't Date: 2007-10-23 |
Journal Detail:
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Title: Journal of environmental monitoring : JEM Volume: 9 ISSN: 1464-0325 ISO Abbreviation: J Environ Monit Publication Date: 2007 Dec |
Date Detail:
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Created Date: 2007-11-30 Completed Date: 2008-02-26 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100968688 Medline TA: J Environ Monit Country: England |
Other Details:
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Languages: eng Pagination: 1352-7 Citation Subset: IM |
Affiliation:
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Department of Microbial Engineering, Konkuk University, Gwangjin-Gu, Seoul 143-701, Korea. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Electrochemistry Electrodes Online Systems Oxygen / chemistry* Waste Disposal, Fluid / instrumentation*, methods |
| Chemical | |
Reg. No./Substance:
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7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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