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SBR Technologies conducts treatability studies for the Bioremediation of soils contaminated with cutting oils

Challenge

The soil at the industrial site in Weaverville, North Carolia was contaminated with cutting oils. SBR Technologies (SBRT) was hired to evaluate the potential applicability of bioremediation as a treatment alternative for the contaminated soil.

SBR Technologies Solution

SBRT’s laboratory studies included microbial enumeration and growth potential tests that indicated the soil contained indigenous populations of organisms capable of degrading the major contaminants.

Additional studies conducted in closed soil slurry reactors evaluated the impact of nutrient addition on biodegradation and respiration rates. Mass balances on the contaminants conclusively demonstrated biodegradation of the cutting oils. Physical/chemical analyses (e,g. cation ion exchange capacity, pH, porosity, hydraulic conductivity, and grain size) were performed on representative soil samples to identify and quantify other parameters affecting in situ bioremediation of the soil.

Benefits Achieved

Based on the results of SBRT’s laboratory studies it was concluded that in situ bioremediation was a viable treatment alternative for the site. At the client’s request, SBRT also reviewed all pertinent site data from previous remedial investigations, identified additional data needs, provided specific recommendations for pilot scale tests, and provided a conceptual design for a full scale system.