STP1235

    Field Application of Solid Oxygen Source for Bioremediation

    Published: Jan 1995


      Format Pages Price  
    PDF (156K) 10 $25   ADD TO CART
    Complete Source PDF (4.1M) 10 $98   ADD TO CART


    Abstract

    A contaminated field site was created in the subsurface soil by introducing propylene glycol (PPG). The soil at the site is an overconsolidated silty clay of very low permeability (hydraulic conductivity about 10-7 cm/sec). After a period of acclimation, the soil was hydraulically fractured using a mixture of sand, encapsulated sodium percarbonate, and IBDU slow-release fertilizer. In the vicinity of the fractures, microbial metabolic rate increases were observed as well as increases in the microbial population of 10 to 100 fold. The PPG was observed at lower concentrations near the fractures compared to above the fractures by the end of the incubation. After four months in the soil, the rate of oxygen release from the fracture layer was still 2.6% of its initial rate of oxygen release.

    Keywords:

    propylene glycol, hydraulic fracturing, encapsulated sodium percarbonate, in situ, bioremediation


    Author Information:

    Davis-Hoover, WJ
    Research Environmental Microbiologist, U. S. Environmental Protection Agency, Risk Reduction Engineering Laboratory, Center Hill Laboratory, Cincinnati, Ohio

    Murdoch, LC
    Research Associates, University of Cincinnati, Civil and Environmental Engineering Department, Center Hill Laboratory, Cincinnati, Ohio

    Vesper, SJ
    Research Associates, University of Cincinnati, Civil and Environmental Engineering Department, Center Hill Laboratory, Cincinnati, Ohio


    Paper ID: STP13039S

    Committee/Subcommittee: F20.15

    DOI: 10.1520/STP13039S


    CrossRef ASTM International is a member of CrossRef.