Abstract
Composting of 2,4,6-trinitrotoluene (TNT) contaminated soils is a potentially economical remediation alternative. To determine whether environmentally undesirable emissions or residuals are produced, an explosives contaminated soil was amended with radiolabelled TNT before composting in a small-scale compost simulation system. Mass balance results indicated that TNT was not mineralized to volatile organic compounds and almost no radiolabelled CO 2 was produced. Only transformation to the solvent extractable products, 4-amino-2,6-dinitrotoluene and 2-amino-4,6-dinitrotoluene, and conjugation to cellulosic, humin, humic acid and fulvic acid occurred. More than half of the added radioactivity was recovered in the cellulose plus humin fractions.
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