SOIL-WATER PARTITIONING AND MASS-TRANSFER KINETICS OF 2,4,6-TRINITROTOLUENE IN HIGHLY CONTAMINATED SOIL

The soil distribution coefficient for highly concentrated TNT soil is determined. Different amounts of TNT soil are shaked with 250 mi of di stilled water, and the concentration of TNT in water is monitored thro ughout the experiment. At the conclusion of the experiment, the remain der of TNT in the soil is determined. The soil distribution coefficien t is calculated by dividing the concentration of TNT in the soil by th e concentration of TNT in the water phase. The average soil distributi on coefficient is found to be 4.86 L/kg The mass transfer coefficient was determined under static conditions. This experiment involves a com prehensive study of distribution profiles for TNT in the soil and solv ent phases. The experiment was conducted under a controlled temperatur e environment, for extensive periods of time. Samples were collected o n a regular basis and were analyzed promptly. The average value of the mass transfer coefficient was determined to be 3.4x10(-3) hr(-1).