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    Evaluation of Solidification/Stabilization for Treating Explosives Contaminated Soils


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    The success of solidification/stabilization (S/S) for treating explosives contaminated soils was evaluated using a variety of physical, chemical, and contaminant release testing methods. The analytes of concern included explosives and their degradation products (TNT, RDX, HMX, 2,4-Dinitrotoluene, 2,6-dinitrotoluene, 2,4,6-Trinitrotoluene, 2-Amino-4,6-Dinitrotoluene, 4-Amino-2,6-Dinitrobenzene, 2,4-Dinitrotoluene) and PAH's (Benzo(a)anthracene, Benzo(b)flouranthene, Benzo(k)flouranthene, Benzo(a)pyrene, Chrysene, Dibenz(a,h)anthracene, and Ideno(l,2,3-cd)pyrene). All Toxicity Characteristic Leaching Procedure (TCLP) leachate analytes, except 2-Am-4,6-DNT, were significantly reduced by S/S. All of the PAH compounds were reduced below detection limits. The release of 2,4,6-TNT was reduced approximately 97%. The release of 2,4-DNT was also significantly reduced. The results of the Sequential Batch Leach Test (SBLT) were mixed. The PAH compounds were not identified above detectable limits in the leachates from either the untreated soil or the treated soils. Release of 2,4,6-TNT was reduced to undetectable. However, other explosives related compounds (2-Am-4,6-DNT) were identified in the leachates from the treated soils that were not identified in the untreated soil. Organic transformations in the highly alkaline environment associated with S/S or sample heterogeneity are suspected to cause this phenomena.


    explosives treatment, solidification, stabilization, soil remediation, organics remediaiton

    Author Information:

    Cullinane, MJ
    Research Civil Engineer and Program Manager for Installation Restoration Research, U.S. Army Engineer Waterways Experiment Station, Vicksburg, MS

    Channell, M
    Environmental Engineer, U.S. Army Engineer Waterways Experiment Station, Vicksburg, MS

    Committee/Subcommittee: D34.01

    DOI: 10.1520/STP14103S