Tersus Environmental LLC

Gary M Birk

David F Alden

Jeffrey H Harwell

Bor Jier Shiau

Sangho Bang

John Archibald

John Sankey

A method for treating an environmental medium having organic contaminants is disclosed. A mixture is added to the environmental medium. The environmental medium is heated to activate the mixture and to evaporate the organic contaminants within the environmental medium to generate contaminated vapors. The mixture acts as an additional heat source. The mixture includes a metal powder. The contaminated vapors are extracted via a perforated pipe, thereby removing the organic contaminants in a gaseous form from the environmental medium. The organic contaminants have an initial boiling point in range of 50° C. to 400° C., when immersed in water or in contact with moist soil, measured at a standard atmospheric pressure of 1 atm.

Metal powder mixture as heat source for treating environmental medium

The present subject matter illustrates a zero-valent metal suspension in non-aqueous phase. The suspension comprises 41 wt. % of a plurality of zero-valent iron particles; 0.1 wt % of a surfactant; 36 wt. % of an oil; and 23 wt. % of a thickening agent.

Zero-valent metal suspension in non-aqueous phase for water remediation

The present subject matter relates to a composition for in-situ remediation of soil and aquifer comprising of a water miscible oil; a solvent (for dissolving the vegetable oil to form a solution); and a catalyst (selected from enzymes biocatalysts, particularly lipases, alkaline compounds, heat or combinations thereof). The present subject matter provides a process for the preparation of the composition and application of the same for surface remediation. Further, the present subject matter provides an in-situ alcoholysis remediation method to reduce contaminant concentrations in aquifer and soil by enabling the generation of both soluble and slowly fermenting electron donors required for the anaerobic remediation of organohalide compounds contaminating soils and groundwater. The method of remediation includes mixing an engineered water-soluble oil or water miscible oil with a solvent and adding a catalyst to groundwater to promote the formation of fatty acid alkyl esters, carboxylic acid salts and glycerol.

Enhanced reduction bioremediation method using in-situ alcoholysis

The present subject matter illustrates a method for accelerated in-situ chemical reduction of subsoil matter. The method comprises supplying a mixture comprising ferrous sulfide into soil pathways to biologically react with dissolved contaminates in the groundwater. Further, an organic hydrogen donor is supplied into the soil-pathways to produce anerobic-conditions to cause indigenous anaerobic bacteria to biodegrade residual concentrations of the contaminates.

Method and a chemical composition for accelerated in situ biochemical remediation

A composition for the bioremediation of soil or groundwater includes 35 to 60% by weight of an emulsifiable C4-C22 vegetable oil such as soybean or corn oil, about 60-35% by weight of a non-ionic surfactant/co-surfactant blend such as Tween 80&#xae;/Labrafil&#xae; mixed with Kolliphor EL&#xae;/Waglinol&#xae;, and about 0-12% by weight water.

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Wake Forest, NC, United States of America

Gary M Birk