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Terra Systems, Inc. (TSI)
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Terra Systems SRS - Model ZVI - ...

Terra Systems SRS - Model ZVI -Combined Emulsified Vegetable Oil Substrate

FromTerra Systems, Inc. (TSI)

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Terra Systems "injection ready" SRS®-ZVI combines Terra Systems patented SRS® Emulsified Vegetable Oil Substrate with 4 µm zero valent iron (ZVI) and is added to the groundwater at complex and challenging remediation sites to rapidly generate reducing conditions. SRS®-ZVI provides the necessary carbon and hydrogen to support native or introduced microorganisms (Dehalococcoides) for the biodegradation of dense non-aqueous phase liquids (DNAPLs) like tetrachloroethene (PCE) and trichloroethene (TCE) and to support abiotic degradation by the ZVI.

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The 4 |im ZVI should be injected via DPT for optimal distribution and because of the smaller particle size provides very good distribution and contact with the contaminants of concern (COC), easier injectability for the driller and fewer injection points for the consultant, thereby lowering costs. Provides both abiotic and biotic reductive dechlorination processes. IS)
SRS"-Zvi is a combination of ZVI, biodegradable soybean oil, surfactants, sodium lactate, nutrients, and water that form a stable emulsion.
SRS^-Zvi contains a proprietary shear thinning agent, which under pressure thins the SRSiH-Zvi out for ease of injection and improved radius of influence.
The exterior oil layer has similar hydrophobic properties as chlorinated compounds. Therefore, the emulsion attracts the contaminants for abiotic degradation.
Terra Systems, Inc.`s manufacturing facility is configured to allow us to provide our customers with
custom blended EVO/ZVI combinations without a cost premium.
Includes sodium or potassium lactate to kick-start the anaerobic degradation process, nutrients and
Vitamin BJ2, a micronutrient, which He etal. 2007demonstrated is an important micronutrient to enhance dechlorination activity.
It arrives at the site as a homogenous injection ready substrate and does not require mixing, which results in lower field labor costs from inefficient field mixing.
Proven effective with high concentrations of chlorinated solvents, DNAPL, Biobarriers to prevent
migration across property boundaries and Freon 113 treatment. Zero Valent Iron can promote the abiotic dechlorination of solvents including tetrachloroethene (PCE), trichloroethene (TCE), 1,1,1-trichloroethane (1,1,1-TCA), and Freon 113 (l,l,2-trichloro-l,2,2-trifluoroethane).
Proven effective at military installations, dry cleaners, semiconductor manufacturers, fabricators and manufacturing firms that use and clean metal parts (air conditioners, dishwashers, etc.).