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Title: Characterization of insoluble fractions of TNT transformed by composting

Journal Article · · Journal of Environmental Science and Health, Part A: Environmental Science and Engineering; (United States)
; ; ;  [1]
  1. Oak Ridge National Lab., TN (United States)

Soil contaminated with explosives was supplemented with carbon-14 labelled 2,4,6-trinitrotoluene ([sup 14]C-TNT) and was composted in a field static pile composting experiment. After 90 d of composting, the distribution of carbon-14 ([sup 14]C) activity in fractions from acetonitrile extraction ([open quotes]free[close quotes] fraction, 1.2% of the initial [sup 14]C-activity) and filtration ([open quotes]insoluble-particle[close quotes] fraction, 17.9%), alkaline hydrolysis ([open quotes]insoluble-hydrolyzable[close quotes] fraction, 56.8%), and combustion of the residue ([open quotes]insoluble-nonhydrolyzable[close quotes] fraction, 4.7%) showed that the bulk of the [sup 14]C-activity, and presumably transformed product(s) of the [sup 14]C-TNT, accumulated in a nonextractable, but hydrolyzable fraction. Repetitive aqueous leaching of the compost and also ultraviolet light irradiation followed by leaching suggest that the insoluble fraction of transformed TNT should not be released appreciably by the action of acid rain or sunlight. 16 refs., 11 figs., 2 tabs.

DOE Contract Number:
AC05-84OR21400
OSTI ID:
7274186
Journal Information:
Journal of Environmental Science and Health, Part A: Environmental Science and Engineering; (United States), Vol. 29:4; ISSN 0360-1226
Country of Publication:
United States
Language:
English

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