Biofilm growth and mineral precipitation in synthetic leachate columns

A. J. Cooke, R. K. Rowe, B. E. Rittmann, J. VanGulck, S. Millward

Research output: Contribution to journalArticle

33 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)849-856
Number of pages8
JournalJournal of Geotechnical and Geoenvironmental Engineering
Volume127
Issue number10
DOIs
StatePublished - Oct 2001
Externally publishedYes

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Environmental Science(all)

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