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Dissolution and Transport of TNT, RDX, and Composition B in Saturated Soil Columns

Katerina M. Dontsova^a,*, Sally L. Yost^b, Jiri imunek^c, Judith C. Pennington^d and Clint W. Williford^a

^a Dep. of Chemical Engineering, Univ. of Mississippi, Oxford, MS. K.M. Dontsova, duty station: U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Rd., Vicksburg, MS 39180
^b Computer Sciences Corporation, Vicksburg, MS
^c Univ. of California, Riverside
^d Environmental Processes Branch, Environmental Laboratory, U.S. Army Engineer Research and Development Center, Vicksburg, MS

View larger version (21K): [in a new window]   Fig. 1. Adsorption isotherms for TNT and RDX with Adler and Plymouth soils. C, measured solution concentration; S, calculated soil concentration. Error bars equal standard error of the mean.

View larger version (25K): [in a new window]   Fig. 2. Breakthrough curves for 14C-RDX and 3H2O for Adler (left) and Plymouth (right) soils for continuous (top) and interrupted (bottom) flow experiments. IF, interrupted flow.

View larger version (25K): [in a new window]   Fig. 3. Breakthrough curves for 14C-TNT and 3H2O for Adler (left) and Plymouth (right) soils for continuous (top) and interrupted (bottom) flow experiments. IF, interrupted flow.

View larger version (27K): [in a new window]   Fig. 4. Breakthrough curves for liquid phase Composition B (Comp B) for Adler and Plymouth soils. IF, interrupted flow; RDX, hexahydro-1,3,5-trinitro-1,3,5-triazine; MNX, hexahydro-1-nitroso-3,5-dinitro-1,3,5-triazine; DNX, hexahydro-1,3-dinitroso-5-nitro-1,3,5-triazine; TNX, hexahydro-1,3,5-trinitroso-1,3,5-triazine; HMX, octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine; TNT, trinitrotoluene; 2-ADNT- 2-amino-4,6,-dinitrotoluene; 4-ADNT, 4-amino-2,6,-dinitrotoluene; 2,2'-Azoxy, 4,4',6,6'-tetranitro-2,2'-azoxytoluene; 4,4'-Azoxy, 2,2',6,6'-tetranitro-4,4'-azoxytoluene.

View larger version (30K): [in a new window]   Fig. 5. Breakthrough curves for solid phase Composition B (Comp B) for Adler and Plymouth soils. IF, interrupted flow; RDX, hexahydro-1,3,5-trinitro-1,3,5-triazine; MNX, hexahydro-1-nitroso-3,5-dinitro-1,3,5-triazine; DNX, hexahydro-1,3-dinitroso-5-nitro-1,3,5-triazine; TNX, hexahydro-1,3,5-trinitroso-1,3,5-triazine; HMX, octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine; TNT, trinitrotoluene; 2-ADNT, 2-amino-4,6,-dinitrotoluene; 4-ADNT, 4-amino-2,6,-dinitrotoluene; 2,2'-Azoxy, 4,4',6,6'-tetranitro-2,2'-azoxytoluene; 4,4'-Azoxy, 2,2',6,6'-tetranitro-4,4'-azoxytoluene.