Large-droplet EVO
SRS®-LD
Large-droplet EVO engineered for a longer-lived treatment zone.
- PCE (Tetrachloroethene (PCE))
- TCE (Trichloroethene (TCE))
- 1,1,1-TCA (1,1,1-Trichloroethane)
- Cr(VI) (Hexavalent chromium)
- Perchlorate
- Nitrate
- TNT
- Uranium
- cis-1,2-DCE (cis-1,2-Dichloroethene)
- 1,1-DCE (1,1-Dichloroethene)
- VC (Vinyl chloride)
- 1,1,2-TCA (1,1,2-Trichloroethane)
- 1,1-DCA (1,1-Dichloroethane)
- Chloroethane
- Carbon tetrachloride
- Chloroform
- Methylene chloride
SRS®-LD uses the same 60% soybean oil, 5.5% quick-release, nutrient and Vitamin B12 package as SRS®-SD, but emulsified to a larger, average 5 µm droplet rather than a small one. The trade is deliberate: a larger droplet moves less far from the injection point but stays in place longer, extending the life of the treatment zone.
SRS®-LD is selected where longevity, rather than maximum radius of influence, is the design priority, including fractured rock and other high-flow settings where a small-droplet emulsion would be carried through too quickly.
Benefits
- Larger, average 5 µm droplet extends substrate longevity versus a small-droplet emulsion
- Suited to fractured rock and other high groundwater flow settings
- Same nutrient and Vitamin B12 package as SRS®-SD
- Ships injection-ready in totes or drums
Specifications
| Product code | SRS-LD |
|---|---|
| Substrate type | Emulsified vegetable oil (EVO) |
| Soybean oil content | 60% |
| Quick-release substrate | 5.5% |
| Droplet size | 5 µm (large droplet) |
| Emulsifier / surfactant | Pending TDS |
| Additional component | Pending TDS |
| Nutrients | Proprietary nutrient package |
| Vitamin B12 | Included |
| Specific gravity | Pending TDS |
| Viscosity | Pending TDS |
| pH | Pending TDS |
| Shelf life | Pending TDS |
| Available in | 264-gallon tote · 55-gallon drum |
Site suitability
Site conditions this product suits, from Terra Systems' product selection questionnaire.
| Distribution | Moderate distribution |
|---|---|
| Injection method |
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| Groundwater flow rate (ft/day) |
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| Geology |
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| Contaminant concentration (mg/L) |
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| Treatment volume (ft³) |
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| Distance to water body or receptor (ft) |
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Marked conditions are suitable for this product.
01 Related resources
Case studies, papers and manuals.
- Emulsified Vegetable Oil Transport Studies in Soil Columns (PDF)Technical paper · 2009 · Battelle Tenth International In Situ and On-Site Bioremediation Symposium (Paper L-82)
- Sustaining Bioremediation in High Groundwater Flow Conditions (PDF)Case study · 2008 · Railcar TCE spill site, eastern Kansas
- A Non-Traditional Technology to Reduce Nitrogen Flux and Meet Estuary Nitrogen TMDLs (PDF)Technical paper · 2024 · Prepared for the Southeast New England Program (SNEP)
- Introduction to Harmful Algal Blooms & An In-Situ Treatment Strategy (PDF)Presentation · 2023 · Enviro Class webinar, December 2023
- Permeable Reactive Barriers for Removal of Nitrate from Groundwater Through Injection of Emulsified Vegetable Oil: Engineering Design Manual (PDF)Design manual · 2023 · Woods Hole Oceanographic Institution / ISOTEC / Terra Systems, Inc., prepared for the Southeast New England Program (SNEP)
- Combined EVO and ZVI for Enhanced Remediation of Chlorinated SolventsPresentation · 2021
02 Contact
Get SRS®-LD priced for your site.
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