The Chemical Educator
ISSN: 1430-4171 (electronic version)
Abstract Volume 12
Issue 6 (2007) pp 381-383
Microscale Environmental Chemistry. Part 9: Removal of Metal Ions by Cementation
Jorge G. Ibanez, * Enrique Lopez-Mejia, Jose A. Echevarria-Eugui
Centro Mexicano de Quimica en Microescala. Depto.
de Ing. y Ciencias Quimicas, Universidad Iberoamericana. Prol. Paseo
Reforma 880, 01210
Mexico, D.F. Mexico, firstname.lastname@example.org
Published online: 30 November 2007
Abstract. An interesting scheme for the recovery of some metals from waste solutions is cementation, whereby spontaneous electrochemical activity takes place in the absence of an external power supply between a metal substrate, N and the ions of a more noble metal, M (i.e., a metal with a higher standard potential). We present here an experiment completely performed within a spectrophotometer cell, where Cu(II) is cemented onto a Zn pellet and the absorbance decrease is monitored at 810 nm. A first-order cementation kinetic plot is presented.
Key Words: Laboratories and Demonstrations; general chemistry; analytic chemistry; electrochemistry; inorganic chemistry
(*) Corresponding author. (E-mail: email@example.com)
Issue date: December