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The Chemical Educator

ISSN: 1430-4171 (electronic version)

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Abstract Volume 8 Issue 1 (2003) pp 47-50

Microscale Environmental Chemistry, Part 2: Effect of Hydrogen Peroxide in the Presence of Iron (II) (Fenton Reagent) and Other Conditions upon an Organic Pollutant

Jorge G. Ibanez,†,* Margarita Hernandez-Esparza, Iraida Valdovinos-Rodriguez, Maria Lozano-Cusi, Adolfo de Pablos-Miranda

Centro Mexicano de Quimica en Microescala, Depto. Ciencias, Universidad Iberoamericana. Prolongacion Reforma 880, 01210 Mexico, D.F. Mexico and Institut Quimic de Sarria, Via Augusta #390, E-08017 Barcelona, Spain, *jorge.ibanez@uia.mx
Received July 30, 2002. Accepted September 11, 2002

Published online: 6 December 2002

Abstract. Organic pollutants and hazardous wastes can be converted into innocuous species like CO2 and H2O upon oxidation by hydrogen peroxide under certain conditions. The mixture of Fe2+ + H2O2(Fenton’s reagent) is highly oxidizing and so is H2O2 when used in conjunction with UV light. In the experiment described here, students taking introductory environmental chemistry will be able to observe the attack on a surrogate pollutant (e.g., the organic dye rhodamine B) by comparing the effect of the following: Fe2+ alone, H2O2 alone, H2O2 + Mn2+, H2O2 + Fe2+ (Fenton’s reagent), sunlight,and H2O2 + sunlight.

Key Words:  In the Classroom; general chemistry; environmental chemistry; analytic chemistry;

(*) Corresponding author. (E-mail: jorge.ibanez@uia.mx)

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Issue date: February 1, 2003

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