Kinetic studies of attachment and detachment of microbial cells from soil

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Abstract

A mathematical model was developed to describe the kinetics of cell attachment and detachment from soil. Soil-column experiments were performed to evaluate the model parameters. Pseudomonas putida G7 capable of degrading naphthalene was used as a model microorganism. A sediment sample taken from an uncontaminated area near a coal tar waste site in upstate New York, USA was used as a test soil. The kinetics of cell attachment and detachment from the model soil could be described by the developed first-order model. The equilibrium constant of attachment (11.4 ml g−1), the rate coefficient of cell attachment (0.299 ml g−1 min−1), and the rate coefficient of cell detachment (0.0263 min−1) were determined from the soil-column experiments. The equilibrium constant of attachment determined in this study (11.4 ml g−1) was within the range of those reported in the literature for bacterial attachment to soil (0.55 to 12.6 ml g−1). The kinetic model successfully predicted the data of batch experiments for cell attachment and detachment from soil.

Original languageEnglish
Pages (from-to)411-418
Number of pages8
JournalEnvironmental Technology (United Kingdom)
Volume24
Issue number4
DOIs
Publication statusPublished - 2003 Apr 1

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All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Water Science and Technology
  • Waste Management and Disposal

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