Biodegradation of hexahydro-1,3,5-trinitro-1,3,5-triazine

Journal Article · Sun Nov 01 00:00:00 EST 1981 · Appl. Environ. Microbiol.; (United States)

OSTI ID:5876664

McCormick, N G; Cornell, J H; Kaplan, A M

Biodegradation of the explosive hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) occurs under anaerobic conditions, yielding a number of products, including: hexahydro-1-nitroso-3,5-dinitro-1,3,5-triazine, hexahydro-1,3-dinitroso-5-nitro-1,3,5-triazine, hexahydro-1,3,5-trinitroso-1,3,5-triazine, hydrazine, 1,1-dimethylhydrazine, 1,2-dimethylhydrazine, formaldehyde, and methanol. A scheme for the biodegradation of RDX is poposed which proceeds via successive reduction of the nitro groups to a point where destabilization and fragmentation of the ring occurs. The noncyclic degradation products arise via subsequent reduction and rearrangement reactions of the fragments. The scheme suggests the presence of several additional compounds, not yet identified. Several of the products are mutagenic or carcinogenic or both. Anaerobic treatment of RDX wastewaters, which also contain high nitrate levels, would permit the denitrification to occur, with concurrent degradation of RDX ultimately to a mixture of hydrazines and methanol. The feasibility of using an aerobic mode in the further degradation of these products is discussed.

• Research Organization: U.S. Army Natick Lab., MA
• OSTI ID: 5876664
• Journal Information: Appl. Environ. Microbiol.; (United States), Vol. 42:5
• Country of Publication: United States
• Language: English

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