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Services Provided
ü Treatability, Feasibility Study
Technologies Used
ü Bioremediation: Co-metabolic
denitrification of groundwater
Relevance
ü Groundwater
ü Radioactive, Hazardous
ü Commercial Client
Accomplishments
ü Bioremediation through innovation
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Title: Groundwater Treatability Testing and Evaluation
Client: Sequoyah Fuels Corporation
Gore, Oklahoma
The purpose of this project was to support a groundwater Feasibility Study by conducting bench-scale and field-scale
treatability studies to determine if a bioremediation co-metabolic technology could be effectively used to remediate arsenic contaminated groundwater. The technology premise
suggests that a microbial population would grow as a result of denitrification. This growth was expected to have two effects on the arsenic affected groundwater. First, the
bacterial action would break down the relatively mobile organoarsenicals to become the less soluble arsenate precipitants. Second, the microorganisms would assimilate
some of the arsenic into the biomass. As the soluble arsenic is converted to non-soluble arsenic residing within the
biomass (referred to as bio-uptake), the affected groundwater would then become remediated. It is based on this principle that this co-metabolic process was identified as a potential
groundwater remedial alternative. To ensure this technology would be an effective alternative for groundwater remediation, ETAS Corporation conducted two feasibility studies: first, a
laboratory study to ensure that the groundwater from the Sequoyah Fuels facility was amenable to bio-arsenic uptake, and second, follow-up field testing to confirm that the arsenic
-laden bio-mass would be relatively immobilized.
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