Accession Number:

ADA224521

Title:

Characterization of Explosives Processing Waste Decomposition Due to Composting. Phase 1

Descriptive Note:

Final rept,

Corporate Author:

OAK RIDGE NATIONAL LAB TN

Report Date:

1990-01-31

Pagination or Media Count:

184.0

Abstract:

Explosives-contaminated primary TNT, RDX, and HMX sediments composted under mesophilic and thermophilic conditions at the Louisiana Army Ammunition Plant were subjected to regulatory leaching Toxicity Characteristic Leaching Procedure and Synthetic Precipitation Leach Test and organic solvent extraction followed by chemical characterization and toxicity tests. Chemical characterization included EPA Contract Laboratory Program Target compound list volatile and semivolatile organics, PCBs, pesticides, metals, and also explosive compounds and TNT metabolites. The toxicity testing utilized Ceriodaphnia dubia, fathead minnow larvae, and the Ames test, Regulatory compounds were not detected at significant concentrations in the leachates or extracts and the main constituents found were TNT, HMX, RDX, and two monoamino dinitrotoluenes at low to sub-ppm levels. Low toxicity was detected in the aqueous leachates, with the leachate from the mesophilic compost being more toxic. Particles recovered from the leachates had only low extractable toxicity. Considerably higher toxicity was found in the organic solvent extracts, because of lesser dilution than the regulatory leachates. Comparison of toxicity calculated per g of compost extracted or leached did not reveal any substantial toxicity in the compost which was not liberated by the regulatory leaching procedure, but the high dilutions 100g compost per 2L of leachate considerably reduced the sensitivity of the Ames test unless the leachates were concentrated 100-fold. JES

Subject Categories:

  • Ammunition and Explosives

Distribution Statement:

APPROVED FOR PUBLIC RELEASE