Record Display for the EPA National Library Catalog


Main Title Novel Delivering of Nutrients and Oxygen to Aid In situ Bioreclamation.
Author Hoover, W. J. D. ; Murdoch, L. C. ; Vesper, S. J. ; Pahren, H. R. ; Sprockel, O. L. ;
CORP Author Cincinnati Univ., OH. ;National Urban League, Inc., Cincinnati, OH. Center Hill Lab.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Publisher 1990
Year Published 1990
Report Number EPA-68-C9-0031; EPA/600/D-90/233;
Stock Number PB91-162487
Additional Subjects Biodeterioration ; Land reclamation ; Nutrients ; Land pollution control ; Oxygenation ; In situ processes ; Soil contamination ; Subsurface investigations ; Aerobic processes ; Hydraulic fracturing ; Hydrogen peroxide ; Encapsulating ; Soil contamination ; Microorganisms ; Slow releasing chemical
Library Call Number Additional Info Location Last
NTIS  PB91-162487 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 30p
A serious problem in the implementation of in situ bioreclamation is the delivery of nutrients and oxygen to soil of low permeability. The problem commonly requires contaminated soil to be excavated for bioreclamation, resulting in increased exposure to toxic materials, liability and cost. The authors demonstrated that it is feasible to create hydraulic fractures at shallow depths (several m) in silty clay till. Fractures created during a recent field test were flat-lying and roughly equant in plan with a maximum dimension of 8 m. Coarse sand was pumped into the fractures to hold them open. The sand was an average of 1.1 cm in maximum thickness. As many as four fractures were created from the same borehole, stacked at vertical spacing of 15 or 30 cm. The technique will be used to deliver slow-releasing granules of nutrients and encapsulated oxygen compounds in an effort to enhance in situ bioreclamation of contaminated soil.