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1997
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In the Laboratory
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The Microscale Laboratory
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Laboratory Experiments on Electrochemical Remediation of the Environment. Part 2: Microscale Indirect Electrolytic Destruction of Organic Wastes
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Jorge G. Ibanez, M. M. Singh, R. M. Pike, and Z. Szafran
Universidad Iberoamericana, Depto. Ing. y C. Quimicas, Prol Reforma 880, Mexico, D.F. 01210 MEXICO
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December 1997
Vol. 74 No. 12
p. 1449
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| Abstract |
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The objective of this experiment is to destroy, at the microscale level, a sample of surrogate organic waste by generating a powerful oxidizer at the anode of an electrochemical cell. This generated species oxidizes the waste to harmless products. The oxidizer can then be regenerated and recycled. Specifically, this experiment utilizes a redox mediator with a high standard potential (i.e., the Co (III/II) couple, E° = 1.82 V) to destroy a surrogate organic waste (e.g., glycerin or acetic acid) by converting it into CO2 and water. Students can observe the end of the reaction signaled by a color change of the electrolytic medium (from pink to gray-light purple) as well as the evolution of CO2 which precipitates CaCO3 from a Ca(OH)2 solution. The Co(II) solution and the electrodes can then be reused.
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| More Information |
 Citation |
Ibanez, Jorge G.; Singh M. M.; Pike, R. M.; Szafran, Z. J. Chem. Educ. 1997 74 1449.
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Keywords |
Laboratory Instruction, Electrochemistry, Environmental Chemistry, and Microscale
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History |
Created:
Last Updated: |
July 20, 1999
June 23, 2005
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| Home > JCE Print > Journal of Chemical Education > Issues >
1997
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December
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1449
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