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  Home > JCE Print > Journal of Chemical Education > Issues > 2002  > February  >
In the Classroom
Denitrification as a Model Chemical Process
Gordan Grguric
Marine Science Program, The Richard Stockton College of New Jersey, Pomona, NJ 08240-0195
Cover
February 2002
Vol. 79 No. 2
p. 179
Abstract
Bacterial denitrification in seawater facilities such as aquaria and mariculture systems is a process particularly well suited for illustrating important concepts in chemistry to undergraduates. Students can gain firsthand experience related to these concepts, for example by (i) analyzing and quantifying chemical reactions based on empirical data, (ii) employing stoichiometry and mass balance to determine the amounts of reactants required and products produced in a chemical reaction, and (iii) using acid-base speciation diagrams and other information to quantify the changes in pH and carbonic acid speciation in an aqueous medium. At the Richard Stockton College of New Jersey, we have utilized actual data from several seawater systems to discuss topics such as stoichiometry, mass and charge balance, and limiting reagents. This paper describes denitrification in closed seawater systems and how the process can be used to enhance undergraduate chemistry education. A number of possible student exercises are described that can be used as practical tools to enhance the students' quantitative understanding of chemical reactions.
More Information
*  Citation
 Grguric, Gordan. J. Chem. Educ. 2002 79 179.
*  Keywords
 Aqueous Solution Chemistry; Computer Assisted Instruction; Problem-Based Learning; Stoichiometry
*  History
 Created:
Last Updated:		 January 2, 2002
March 16, 2005
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