Electrochemical Removal of Metal Cations from Wastewater Monitored by Differential Pulse Polarography

Delphine Bruce , Alexander Kuhn and Neso Sojic
Lab d''Analyse Chimique par Reconnaissance Moléculaire, Ecole Nationale Supérieure de Chimie et de Physique de Bordeaux, 33607 Pessac, France
J. Chem. Educ., 2004, 81 (2), p 255
DOI: 10.1021/ed081p255
Publication Date (Web): February 1, 2004
History, Education, and Documentation

Abstract

A simple experiment is described that exposes students to two important aspects of electrochemistry: its potential use in industrial technologies and its application for solving analytical problems. To illustrate these two points we have chosen to examine the electrolytic elimination of metal ions (Cd2+, Cu2+, Zn2+) from an aqueous solution. The metal ion concentrations are monitored by differential pulse polarography. This experiment is well suited to explain the connection between thermodynamics and kinetics based on the quantitative evolution of the different metal concentrations.

Keywords (Audience):

Second-Year Undergraduate

Keywords (Domain):

Analytical Chemistry

Keywords (Subject):

Copper
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  • Received: August 03, 2009

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