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Anaerobic and aerobic transformation of TNT

Description: Most studies on the microbial metabolism of nitroaromatic compounds have used pure cultures of aerobic microorganisms. In many cases, attempts to degrade nitroaromatics under aerobic conditions by pure cultures result in no mineralization and only superficial modifications of the structure. However, mixed culture systems properly operated result in the transformation of 2,4,6-trinitrotoluene (TNT) and in some cases mineralization of TNT occurs. In this paper, the mixed culture system is describ… more
Date: December 31, 1996
Creator: Kulpa, C.F.; Boopathy, R. & Manning, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Field Screening of Soils Contaminated With Explosives Using Ion Mobility Spectrometry

Description: Soils contaminated with explosives constitute a problem at DOE facilities and Army installations. Because explosives in soil are often heterogeneously distributed and require high density sampling, field screening is essential to characterize sites more quickly, economically and accurately. Current immunoassay and colorimetric field screening procedures have proven useful, but have significant per sample costs and limited throughput. At present, several field screening are available for TNT in … more
Date: September 1, 1996
Creator: Crockett, A. B.; Atkinson, D. A. & Jenkins, T. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Differential sensitivity of aerobic gram-positive and gram-negative microorganisms to 2,4,6-trinitrotoluene (TNT) leads to dissimilar growth and TNT transformation: Results of soil and pure culture studies

Description: The effects of 2,4,6-trinitrotoluene (TNT) on indigenous soil populations and pure bacterial cultures were examined. The number of colony-forming units (CFU) appearing when TNT-contaminated soil was spread on 0.3% molasses plates decreased by 50% when the agar was amended with 67 {mu}g TNT mL{sup -1}, whereas a 99% reduction was observed when uncontaminated soil was plated. Furthermore, TNT-contaminated soil harbored a greater number of organisms able to grow on plates amended with greater than… more
Date: July 30, 1996
Creator: Fuller, M.E. & Manning, J.F. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Calibration of an explosives vapor generator based on vapor diffusion from a condensed phase

Description: In the field of explosives detection there is currently a need for a calibrated source of explosives vapor. Such a source could be used to test and calibrate explosives detection systems which identify explosives via the collection of vapor or air borne particulate matter. This paper describes the principles of operation and evaluation of one such explosives vapor generator. This generator is based on the diffusion of vapor from a condensed phase (i.e., solid or liquid) in a source reservoir, a… more
Date: August 1, 1996
Creator: Parmeter, John E.; Eiceman, Gary A.; Preston, Douglas A. & Tiano, Gregory S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Destruction of 2,4,6-trinitrotoluene using ammonium peroxydisulfate

Description: TNT was destroyed in a small batch reactor, using uncatalyzed 4 N ammonium peroxydisulfate at 95 {degrees}C. The material was destroyed below limit of detection in less that 15 minutes, indicating a formal order rate constant of 0.06 min{sup -1}. A crude estimate of scaleup rates indicates a throughput of 1 tonne/m{sup 3}-day.
Date: July 1996
Creator: Cooper, J. F.; Wang, F.; Shell, T. & King, K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DOUBLE TRACKS Test Site interim corrective action plan

Description: The DOUBLE TRACKS site is located on Range 71 north of the Nellis Air Force Range, northwest of the Nevada Test Site (NTS). DOUBLE TRACKS was the first of four experiments that constituted Operation ROLLER COASTER. On May 15, 1963, weapons-grade plutonium and depleted uranium were dispersed using 54 kilograms of trinitrotoluene (TNT) explosive. The explosion occurred in the open, 0.3 m above the steel plate. No fission yield was detected from the test, and the total amount of plutonium deposite… more
Date: June 1, 1996
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Popover data report

Description: Popover tests 1--5 were a series of five high explosive detonations performed to certify BEEF (Big Explosive Experimental Facility) for human occupancy on future high explosive tests. This document compiles and summarizes the results of the measurements done by EG and G/EM (now Bechtel Nevada Corporation) personnel during those tests. The enclosed data are from three transducer types: (1) strain gages (channels designated by ``S`` or ``SG``); (2) blast overpressure gages (channels designated by… more
Date: March 1, 1996
Creator: Heinle, R. & Stubbs, T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

POPOVER Review Panel report

Description: The POPOVER series of high explosive (HE) certification tests was conducted at the Big Explosives Experimental Facility (BEEF) in Area 4 of the Nevada Test Site (NTS). The two primary objectives of POPOVER were to certify that: (1) BEEF meets DOE requirements for explosives facilities and is safe for personnel-occupied operations during testing of large charges of conventional HE. (2) Facility structures and equipment will function as intended when subjected to the effects of these charges. Aft… more
Date: April 10, 1996
Creator: Davito, A.; Baker, C. J.; King, C. J.; Costerus, B.; Nelson, T.; Prokosch, D. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Chemical conversion of energetic materials to higher value products

Description: The objective of this program is to develop novel, innovative solutions for the disposal of surplus explosives resulting from the demilitarization of nuclear and conventional munitions. Studies related to the conversion of TNT and Explosive D to potentially useful materials are described.
Date: May 1, 1996
Creator: Mitchell, A.R.; Sanner, R.D. & Pagoria, P.F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

HALFTON: A high-explosive containment experiment in partially saturated tuff

Description: The HALFTON experiment explored the phenomena of high explosive detonations in 90% water-saturated tuff rock. The explosive source was a 453 kg TNT sphere which was grouted in a drift in G Tunnel, Nevada Test Site. Active gages measured stresses and motions in the range of 1.3 to 5.3 cavity radii and showed a peak stress decay as range raised to the {minus}2.77 power. Additional stress gages were fielded to investigate the gage inclusion problem.
Date: March 1, 1996
Creator: Smith, C.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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