Susceptibility of polysiloxane and colloidal silica to degradation by soil microorganisms

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Description

This report is a description of the laboratory study undertaken to determine the biodegradability of Colloidal Silica (CS) and PolySiloXane (PSX), a new generation of barrier liquids employed by the Viscous Liquid Barrier (VLB) technology in the containment of subsurface contaminants. Susceptibility of either material to microbial degradation would suggest that the effectiveness of a barrier in the subsurface may deteriorate over time. Degradation may result from several different biological events. Organisms may consume the material as a carbon and/or energy source, organisms may chemically change the material as a detoxification mechanism, or organisms may erode the material by their ... continued below

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68 p.

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Lundy, D.Z.; Hunter-Cevera, J.C. & Moridis, G.J. November 1, 1997.

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Description

This report is a description of the laboratory study undertaken to determine the biodegradability of Colloidal Silica (CS) and PolySiloXane (PSX), a new generation of barrier liquids employed by the Viscous Liquid Barrier (VLB) technology in the containment of subsurface contaminants. Susceptibility of either material to microbial degradation would suggest that the effectiveness of a barrier in the subsurface may deteriorate over time. Degradation may result from several different biological events. Organisms may consume the material as a carbon and/or energy source, organisms may chemically change the material as a detoxification mechanism, or organisms may erode the material by their physical penetration of the material during growth. To determine if degradation occurs, physical interactions between soil microbes and the barrier materials were analyzed, and the metabolic activity of individual organisms in the presence of CS and PSX was measured.

Physical Description

68 p.

Notes

OSTI as DE98051514

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  • Other Information: PBD: Nov 1997

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  • Other: DE98051514
  • Report No.: LBL--38024
  • Grant Number: AC03-76SF00098
  • DOI: 10.2172/578622 | External Link
  • Office of Scientific & Technical Information Report Number: 578622
  • Archival Resource Key: ark:/67531/metadc693017

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Creation Date

  • November 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • June 14, 2016, 6:12 p.m.

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Lundy, D.Z.; Hunter-Cevera, J.C. & Moridis, G.J. Susceptibility of polysiloxane and colloidal silica to degradation by soil microorganisms, report, November 1, 1997; California. (digital.library.unt.edu/ark:/67531/metadc693017/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.