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Bioremediation of highly energetic compounds: a search for remediation technologies

Par Conseil national de recherches du Canada

DOITrouver le DOI : https://doi.org/10.2166/wst.2000.0539
AuteurRechercher : 1; Rechercher : 1; Rechercher : 1; Rechercher : 1; Rechercher : 1; Rechercher : 1; Rechercher : ; Rechercher :
Affiliation
  1. Conseil national de recherches du Canada. Institut de recherche en biotechnologie du CNRC
FormatTexte, Article
ConférenceInternational Conference on Waste Minimisation and End of Pipe Treatment in Chemical and Petrochemical Industries (IAWQ 1999), Nov. 14-18, 1999, Yucatan, Mexico
Sujetcrossgroup; bioremediation; explosives; intermediates; mineralization; P. chrysosporium; Rhodococcus; sludge
Résumé
When TNT (N-source) was treated with anaerobic sludge it biotransformed into triaminotoluene (TAT) in high yield (80%). Results of experiments using ¹³C-labeling indicate that denitrated or deaminated products such as p-cresol and toluene were not formed. Whereas ¹⁴C-labeling showed negligible mineralization (<0.1% 14CO₂) despite the complete disappearance of TNT. On the other hand, when TNT (175μM) was treated with the fungus Phanerochaete chrysosporium it disappeared completely in less than two weeks, but mineralization (liberated ¹⁴CO₂) did not exceed 1%. Several intermediates, marked with the initial formation of the two monohydroxylamino-dinitrotoluene (HADNT) followed by their transformation to monoamino-dinitrotoluenes (ADNT), diamines (DANT), acetylated TNT products, and azo and hydrazo derivatives were detected. In contrast, high concentrations (ca 20,000 ppm) of RDX and HMX were effectively degraded (ca 70%) in soil slurries using municipal anaerobic sludge. RDX and HMX disappearance was accompanied by the elimination of toxicity associated with RDX and HMX as determined by the Microtox test.
Date de publication
Dans
  • Water Science & Technology 42, nº 5-6 (septembre 2000) : 385–393.
Langueanglais
Publications évaluées par des pairsOui
Numéro du CNRCCPENV20
43319
Numéro NPARC3539845
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Identificateur de l’enregistrementc39c27a4-ce49-4cfc-8ee2-29d53f1c9a66
Enregistrement créé2009-03-01
Enregistrement modifié2022-10-12
Date de modification :