Water Depollution Control: A Gateway to Reaction Monitoring and Analytical Chemistry
JOURNAL OF CHEMICAL EDUCATION(2022)
Abstract
We describe here a 4 hour experimental session based on reaction monitoring of the degradation of an organic pollutant via a Fenton-like reaction. An aqueous solution of p-nitrophenol is treated with hydrogen peroxide and magnetite, and the progress of the reaction is monitored by UV-vis spectrophotometry and/or gas chromatography using an internal standard. During that session, undergraduate students discovered a new scope of heterogeneous catalysis, namely, a green process for water depollution. Behind the simplicity of setting up the Fenton-like reaction, they were challenged by the requirements of replicability and precision of the quantitative tracking of the reaction. They appreciated being confronted with a realistic environmental problem and seeing what role catalysis and modern chemistry could play to tackle the issue.
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Key words
Upper-Division Undergraduate,Hands-On Learning/Manipulatives,Analytical Chemistry,Green Chemistry,Gas Chromatography,UV-Vis Spectroscopy,Catalysis
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