Biofilm Growth and Mineral Precipitation in Synthetic Leachate Columns
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 127, Issue 10
Abstract
The results of a numerical model developed to describe the clogging of the leachate collection systems are compared with data from column experiments conducted with synthetic landfill leachate. A biofilm kinetic model is used to calculate the utilization of organic substrates (acetate and propionate) and growth of active clog material, and the substrate removal is then linked to mineral precipitation. Calculated changes in the chemical oxygen demand and Ca2+ of the effluent leachate and the porosity profiles along the length of the column show encouraging agreement with measured values. Means to obtain reasonable parameter values are presented. The favorable outcome represents completion of an essential first step toward being able to predict what controls clogging in landfill leachate collection systems.
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Information & Authors
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 127 • Issue 10 • October 2001
Pages: 849 - 856
History
Received: Mar 14, 2000
Published online: Oct 1, 2001
Published in print: Oct 2001
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