EDS-ME™

Multi-Alcohol Electron Donor – Rapid Release
  Safety Data Sheet (SDS) 

Product Overview

EDS-ME™ is a rapid-release electron donor formulated as a blend of ethanol, methanol, and n-propyl alcohol. It is designed for in-situ remediation applications where immediate electron donor availability and enhanced dispersibility are required.

When injected prior to extended-release substrates such as EDS-ER™, EDS-ME™ provides an initial pulse of readily fermentable carbon that supports rapid establishment of anaerobic conditions and improves early-time amendment distribution in aquifers and subsurface environments.

Technical Basis

Rapid-Release Electron Donor Performance

Low-molecular-weight alcohols such as ethanol and methanol are highly soluble, readily biodegradable, and rapidly fermented under anaerobic conditions. Fermentation of EDS-ME™ generates hydrogen and short-chain organic acids that serve as electron donors for anaerobic microbial processes, including reductive dechlorination of chlorinated volatile organic compounds (CVOCs).

Because these alcohols are consumed quickly relative to long-chain lipid substrates, EDS-ME™ is well suited for applications requiring immediate reducing conditions ahead of slower-fermenting amendments.

Enhanced Dispersibility in the Subsurface

Due to complete miscibility with water, EDS-ME™ disperses efficiently within the aquifer matrix and pore spaces. This behavior provides advantages in heterogeneous formations and tight intervals where emulsified oils may exhibit limited early-time distribution.

Applications

EDS-ME™ is used as a short-term, rapid-response electron donor in anaerobic remediation programs.

Typical applications include:

• Pre-conditioning aquifers prior to injection of extended-release substrates
• Rapid establishment of anaerobic conditions
• Enhancement of early-time reductive dechlorination activity

• Support of amendment distribution in low-permeability or heterogeneous formations

EDS-ME™ is not intended to replace long-term substrates but to complement them within an integrated treatment strategy.

Integration with Tersus Technologies

EDS-ME™ functions as a rapid-release electron donor within the EDS-Advanced™ catalyzed reductive bioremediation platform (U.S. Patent No. 11,577,231 B2).

Within the EDS-Advanced™ system, remediation may involve coordinated use of:

• EDS-ME™ for immediate electron donor availability and enhanced dispersibility
• EDS-ER™ as the extended-release emulsified oil substrate
• EDS-Substrate Shuttle™ as the alcohol cosolvent and conditioning agent
• EDS-Activator™ as the proprietary catalyst promoting fatty acid release

When injected ahead of or alongside EDS-ER™, EDS-ME™ supports rapid onset of reducing conditions, improves early amendment contact, and helps establish favorable geochemical conditions for sustained treatment.

Features & Benefits

Features

• Blend of ethanol, methanol, and n-propyl alcoholCompletely miscible with water
• Rapidly biodegradable
• High dispersibility in groundwater
• Compatible with standard injection equipment

Benefits

• Provides immediate electron donor availability
• Accelerates establishment of anaerobic conditions
• Enhances early-time amendment performance
• Complements extended-release substrates
• Improves treatment reliability in heterogeneous aquifers

Typical Application

EDS-ME™ is typically injected as a pre-conditioning or early-phase amendment prior to introduction of extended-release substrates. Application volumes and sequencing are site-specific and defined in the approved work plan based on contaminant mass, hydrogeology, and treatment objectives.

Physical Characteristics

Refer to the Safety Data Sheet (SDS) for complete compositional, handling, and hazard information.

Transportation

• UN Number: UN1987
• Proper Shipping Name: Alcohols, n.o.s. (Ethanol, Methanol)
• DOT Hazard Class: Class 3 – Flammable liquid
• Packing Group: II

Packaging

• 55 Gallon Steel Drum
  • Dimensions: 25 × 25 × 36 in
  • Net Fill: 365 lbs.