Sequential Electrolytic Degradation of Energetic Compounds in Groundwater
Abstract
In 2002, SERDP funded CSU to conduct proof of concept studies to evaluate sequential electrolytic degradation of energetic compounds using flow through electrolytic reactors (e-barriers). In 2003, SERDP provided supplemental funding for a more detailed analysis of reaction mechanisms and products. This report includes detailed results from these efforts. The results from the first phase suggest that e-barriers are a promising option for treatment of energetic compounds in groundwater. Specifically, high fractional removal of TNT and RDX was observed with minimal generation of deleterious products at low power requirements. The batch reactor experiments conducted in Phase 2 suggest that the high fractional TNT removal found during the proof of concept experiments can be explained by heterogeneous cathodic reduction of TNT. The rate of TNT transformation is dependent on applied potential. Significant nitrite was formed and further reduced during the batch reactor experiments. At least one pathway has been identified involving formation of nitroso-substituted intermediates (MNX, DNX, and TNX) at low concentration. Other intermediates identified include nitramide. Based on the results of SERDP ER-1234, a proposal was accepted by ESTCP titled: Field Demonstration/ Validation of e-barrier technology for Treatment of Energetic Compounds in Groundwater: Pueblo Chemical Depot. The transition plan is to conduct a 2 year field demonstration under ESTCP funding followed by a full-scale e-barrier funded under Base Realignment and Closure (BRAC).
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 12, 2004
- Accession Number
- ADA470176
Entities
People
- Dave Gilbert
- Tom Sale
Organizations
- Colorado State University