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  Home > JCE Print > Journal of Chemical Education > Issues > 1997  > October  >
Chemical Education Today
Letters
Waste Treatment in the Undergraduate Laboratory: Let the Students Do It!
Volker Wiskamp
Fachhochschule Darmstadt, Fb. Chemische Technologie, Darmstadt 64289, Germany
Cover
October 1997
Vol. 74 No. 10
p. 1152
Full Text
John J. Nash, Jeanne A. R. Meyer, and Susan C. Nurrenbern (J. Chem. Educ. 1996, 73, 1183–1185) published an innovative approach to reduce the amount of waste in the general chemistry laboratory and to contribute to environmental education. They let the students work up wastes from their own experimentsfor example, remove poisonous copper and zinc ions from complex solutions by precipitation with sodium sulfide and filtration. Before pouring the filtrates down the drain, they should not forget to add hydrogen peroxide to oxidize excess and poisonous sodium sulfide to nonpoisonous sulfate.

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 Wiskamp, Volker. J. Chem. Educ. 1997 74 1152.
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*  History
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Last Updated:		 July 27, 1999
June 23, 2005
Link to Author's Reply added (May 2004). Link to Article added (August 2004).
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