Microbial growth in a steady-state model of ethylene glycol- contaminated soil

Luann McVicker, Duff Dennis, Valerie Stout

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

Biodegradation of ethylene glycol was tested in a laboratory-scale, steady-state infiltration system of two arid region soil types by monitoring indigenous microbial growth after the infiltration of three concentrations of ethylene glycol. Microorganisms in the soils were able to adapt to the ethylene glycol in several cases, resulting in higher numbers of microorganisms and lower pHs in the effluents. These microorganisms were identified and were able to use ethylene glycol as a sole carbon source. The adaptation was seen best with high-moisture-content soils when the ethylene glycol concentrations were 1% or 10%. However, acclimation to 0.1% and 10% ethylene glycol did not occur in low-moisture-content clay soil, but did occur in low-moisture-content silt soil, indicating that soil type and moisture content are important factors. In all cases, microbial diversity decreased over time.

Original languageEnglish (US)
Pages (from-to)136-147
Number of pages12
JournalCurrent Microbiology
Volume36
Issue number3
DOIs
StatePublished - Mar 18 1998

ASJC Scopus subject areas

  • Microbiology
  • Applied Microbiology and Biotechnology

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