Groundwater and Wastewater Remediation Using Agricultural Oils

Scientists have developed a groundwater treatment technique that employs agricultural oils to stimulate endogenous microbes which accelerates the cleanup. The oils tested include canola oil, grapeseed oil, coconut oil, corn oil, cottonseed oil, olive oil, palm oil, palm kernel oil, peanut oil, safflower oil, soybean oil, sunflower oil, beef oil, cod-liver oil, tallow, candelilla oil, carnawba wax, beeswax, and palm tree wax. The system can be configured as either in situ or ex situ.
This invention uses the physical and chemical properties of floating, separate phase, liquid organic substrates and system geometry to produce a passive treatment system for contaminated waters. The system utilizes a long-term, slow release, electron donor/carbon source for microorganisms. The electron donor/carbon source is fairly constant and is not subject to deactivation, plugging, and hydraulic failure. Additional advantages include the ability to easily replenish the source in high quantities and the source not being easily flushed out of the system. Precipitate can be removed from the system without the removal of the substrate.
system can be configured as either in situ or ex situ -technology can treat wastewater, seepage, surface water and/or groundwater -technology can remediate waters contaminated with sulfate, nitrate/nitrite, redox sensitive metals, or chlorinated solvents -no waste product is produced (organics are transformed into non-toxic end products -no above ground structure is required -energy resources are not consumed in the process -length of time required for remediation is reduced by enhancing natural flow rates
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