Spatial Disorder and Degradation Kinetics in Intrinsic Biodegradation Schemes

Randall A. LaViolette, Maribeth E Watwood, T. R. Ginn, D. L. Stoner

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The restoration of contaminated soils by intrinsic biodegradation employs microorganisms in the subsurface that degrade the contaminant substrate infiltrating the subsurface matrix. The outcome of intrinsic biodegradation has been difficult to predict. We examine a source of the difficulty with a computational model of diffusive-reactive transport that introduces spatial disorder in the arrangement of the degrading microorganisms. Spatial disorder alone, even on the small scales that characterize the distance between aggregates of microorganisms, is enough to induce a wide range of times to complete the degradation to an arbitrary limit. The mean time for the concentration to achieve the limit becomes twice that for the case of spatial order. Bounds on the range of the effective degradation kinetics can be obtained by computing the distribution of times to complete degradation.

Original languageEnglish (US)
Pages (from-to)4480-4484
Number of pages5
JournalJournal of Physical Chemistry A
Volume103
Issue number23
StatePublished - Jun 10 1999
Externally publishedYes

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biodegradation
microorganisms
Biodegradation
Microorganisms
disorders
degradation
Degradation
Kinetics
kinetics
restoration
Restoration
contaminants
soils
Impurities
Soils
Substrates
matrices

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Spatial Disorder and Degradation Kinetics in Intrinsic Biodegradation Schemes. / LaViolette, Randall A.; Watwood, Maribeth E; Ginn, T. R.; Stoner, D. L.

In: Journal of Physical Chemistry A, Vol. 103, No. 23, 10.06.1999, p. 4480-4484.

Research output: Contribution to journalArticle

LaViolette, RA, Watwood, ME, Ginn, TR & Stoner, DL 1999, 'Spatial Disorder and Degradation Kinetics in Intrinsic Biodegradation Schemes', Journal of Physical Chemistry A, vol. 103, no. 23, pp. 4480-4484.
LaViolette, Randall A. ; Watwood, Maribeth E ; Ginn, T. R. ; Stoner, D. L. / Spatial Disorder and Degradation Kinetics in Intrinsic Biodegradation Schemes. In: Journal of Physical Chemistry A. 1999 ; Vol. 103, No. 23. pp. 4480-4484.
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