EDS-QR™
Electron Donor Solution – Quick Release
Safety Data Sheet (SDS)
Product Overview
EDS-QR™ (Electron Donor Solution – Quick Release) is a high-purity (≥99.7%) refined glycerin product developed by Tersus Environmental for in-situ groundwater and soil bioremediation. It functions as a rapid-release, soluble carbon source that stimulates anaerobic microbial activity and supports enhanced reductive bioremediation of chlorinated solvents and other anaerobically degradable contaminants.
EDS-QR™ is particularly well suited for fast-track remediation projects and for applications requiring immediate establishment of reducing conditions. It is commonly used alone for short-duration treatment or in combination with extended-release electron donors to balance immediate and long-term treatment objectives.
Technical Basis
Rapid-Release Fermentable Carbon
EDS-QR™ consists of refined glycerin with a minimum purity of 99.7 percent. Glycerin is a low-molecular-weight, readily fermentable substrate that is rapidly biodegraded under anaerobic conditions. Upon injection, EDS-QR™ is converted to fatty acids and hydrogen, which serve as electron donors for anaerobic microbial processes, including reductive dechlorination.
Because of its high fermentable carbon content, EDS-QR™ delivers a greater electron equivalence per unit mass than many conventional soluble substrates, allowing lower overall injection volumes while achieving effective treatment.
Fast-Acting Treatment Window
A single application of EDS-QR™ typically supports elevated biological activity for two to three months, making it an effective solution for rapid response actions, interim remedies, or projects with aggressive cleanup schedules.
Applications
EDS-QR™ is used as a quick-release electron donor in anaerobic remediation programs.
Typical applications include:
- Enhanced reductive dechlorination of chlorinated ethenes (PCE, TCE, DCE, VC)
- Treatment of chlorinated ethanes and other anaerobically degradable compounds
- Reduction of nitrates and select oxidized metals
- Bioremediation of explosives and energetic compounds
- Pre-conditioning aquifers prior to long-term substrate injection
EDS-QR™ is compatible with bioaugmentation cultures (e.g., Dehalococcoides-containing consortia) and may be injected via wells, direct-push methods, or recirculation systems.
Integration with Tersus Technologies
EDS-QR™ is frequently used as a rapid-acting component within EDS-Advanced™, Tersus’ catalyzed reductive bioremediation platform.
Within an integrated treatment strategy, EDS-QR™ may be combined with:
- EDS-ER™ to provide long-term, extended-release electron donor capacity
- EDS-Activator™ to enhance fatty acid release and fermentation efficiency
- EDS-Substrate Shuttle™ to improve amendment distribution and injection performance
When used alongside slower-fermenting substrates, EDS-QR™ provides immediate reducing conditions and early-time microbial stimulation, while extended-release products sustain treatment over longer timeframes.
Features & Benefits
Features
- ≥99.7% refined glycerin
- High fermentable carbon content
- Sodium-free formulation
- Completely miscible with water
- Rapidly biodegradable
- Food-grade raw material
Benefits
- Rapid establishment of anaerobic conditions
- High electron equivalence per pound of material
- Effective for fast-track and interim remedies
- Compatible with bioaugmentation cultures
- Suitable for salt-sensitive aquifers
- Supports balanced short- and long-term treatment strategies
Typical Application
EDS-QR™ is delivered as a ready-to-use concentrate that can be diluted with water in the field. The diluted solution has a viscosity near that of water, allowing efficient subsurface distribution. Injection configurations may include grid patterns, barrier applications, or targeted source-area treatment using wells or direct-push points.
Application rates and dilution ratios are site-specific and based on contaminant concentrations and site conditions.
Physical Characteristics
| Parameter | Specification | |
| Physical State | Hygroscopic viscous liquid | |
| Appearance | Clear and bright (water-like) | |
| Density | 1.26 g/cm³ at 25°C | |
| Viscosity | ~1,500 cP at 20°C | |
| F;ash Point | >199°C (390°F) | |
| Water Solubility | Miscible with water and ethanol in all proportions |
Refer to Safety Data Sheet for complete compositional, handling, and hazard information.
Transportation
EDS-QR™ is classified as non-hazardous for transportation under U.S. DOT, IMDG, and IATA regulations when shipped as supplied. Refer to SDS for additional shipping classification and handling requirements.
Packaging
EDS-QR™ is available for shipping in either 55-gallon poly drums or 275-gallon IBC containers, providing flexibility in packaging options to meet project needs.
