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Calculation of the Characteristic Performance Indicators in an Electrochemical Process

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C. M. Sánchez-Sánchez , E. Expósito , J. Solla-Gullón , V. García-García , V. Montiel and A. Aldaz

Departamento de Química Física, Universidad de Alicante, 03080 Alicante, Spain

J. Chem. Educ., 2003, 80 (5), p 529

DOI: 10.1021/ed080p529

Publication Date (Web): May 1, 2003

Section:

Electrochemistry

Abstract

Electrochemical engineering, a relatively young discipline, has important interrelationships with chemical engineering and electrochemistry. The main objectives of electrochemical engineering are the characterization and optimization, both in design and operation mode, of the mechanisms and the processes related to the conversion of chemical and electrical energies. Among the examples of electrochemical synthesis implemented at an industry scale are the synthesis of chlor–alkali, aluminium, adiponitrile (an intermediate compound in the manufacture of Nylon). It is feasible to review the systems of electric energy generation (batteries and fuel cells) and sewage treatment. The definition of figures of merit is focused on the electrochemical process and is related to its yield. This concept constitutes a very useful tool to optimize the cost and the economic balance of this process. In this paper, the most characteristic figures of merit in an electrochemical process are defined. They are applied using experimental data obtained in an organic electrosynthesis process: the reduction of L-cystine to L-cysteine in acid media.