Lang, P. S. and Ching, W-K. and Willberg, D. M. and Hoffmann, M. R. (1998) Oxidative Degradation of 2,4,6-Trinitrotoluene by Ozone in an Electrohydraulic Discharge Reactor. Environmental Science and Technology, 32 (20). pp. 3142-3148. ISSN 0013-936X. doi:10.1021/es980052c. https://resolver.caltech.edu/CaltechAUTHORS:20150807-112624545
Full text is not posted in this repository. Consult Related URLs below.
Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20150807-112624545
Abstract
The electrohydraulic discharge process in the presence of ozone has been used to investigate the rapid degradation and mineralization of aqueous 2,4,6-trinitrotoluene (TNT) solutions that were directly exposed to high-energy electrical discharges between two submerged electrodes. The 165 μM solutions of TNT were completely (>90%) mineralized over the course of 300 electrical discharges of 7 kJ each. The kinetics of TNT degradation were investigated as a function of the aqueous-phase ozone concentration, pH, discharge energy, and electrode gap length. The rate of TNT degradation increases with an increase in aqueous-phase ozone concentration of up to 150 μM, an increase in pH from 3.0 to 7.9, an increase in discharge energy from 5.5 to 9 kJ, and a decrease in the electrode gap length from 10 to 6 mm. The rapid rates of mineralization (e.g. 12 ms) are attributed to the action of UV light in the reactor chamber on O_3 to produce a high flux of hydroxyl radicals per discharge (1 μM discharge^(-1)). The primary reaction intermediates were 2,4,6-trinitrobenzaldehyde and trinitrobenzene.
Item Type: | Article | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Related URLs: |
| |||||||||
ORCID: |
| |||||||||
Additional Information: | © 1998 American Chemical Society. Received for review January 21, 1998. Revised manuscript received June 2, 1998. Accepted July 3, 1998. Publication Date (Web): August 29, 1998. Financial support from the Advanced Research Projects Agency (Grant NAV5HFMN N0001492J1901), the Office of Naval Research, and the Electric Power Institute (Grant RP 8003-37) is gratefully acknowledged. | |||||||||
Funders: |
| |||||||||
Issue or Number: | 20 | |||||||||
DOI: | 10.1021/es980052c | |||||||||
Record Number: | CaltechAUTHORS:20150807-112624545 | |||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20150807-112624545 | |||||||||
Official Citation: | Oxidative Degradation of 2,4,6-Trinitrotoluene by Ozone in an Electrohydraulic Discharge Reactor P. S. Lang, W-K. Ching, D. M. Willberg, and M. R. Hoffmann Environmental Science & Technology 1998 32 (20), 3142-3148 DOI: 10.1021/es980052c | |||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
ID Code: | 59318 | |||||||||
Collection: | CaltechAUTHORS | |||||||||
Deposited By: | Ruth Sustaita | |||||||||
Deposited On: | 07 Aug 2015 19:09 | |||||||||
Last Modified: | 10 Nov 2021 22:18 |
Repository Staff Only: item control page