Document Type

Article

Publication Date

12-2018

Subject: LCSH

Oxidation, Biomineralization

Disciplines

Civil Engineering

Abstract

Insensitive Munition (IM) formulations contain 3-nitro-1,2,4-trizole-5-one (NTO), an energetic compound with the highest aqueous solubility (16 g L−1) among all IM explosives, including 2,4-dinitroanisole (DNAN) and 1-nitroguanidine (NQ); as a result wastewater streams from IM processing facilities can be highly contaminated and potentially toxic. The removal of energetic compounds from wastewater streams prior to their discharge in the environment is imperative, and new technology must be developed to efficiently treat high levels of NTO and other IM compounds in these streams. In this study, the treatment of NTO wastewater by a UV/H2O2 oxidation process under acidic conditions (pH = 3.0 ± 0.1) and a hydrogen peroxide concentration of at least 1500 mg L−1 resulted in successful removal of the energetic compound. The organic carbon from the NTO ring was completely converted to inorganic carbon (CO2), as confirmed through TOC measurements and GC–MS analysis on the reactor headspace. Nitrate and ammonium ions were the major nitrogen by-products, as indicated by mass spectrometry. The results obtained in this work demonstrate that the UV/H2O2 oxidation process can effectively mineralize high concentrations of NTO in wastewater streams leading to recovery of valuable nutrients that can be used for supporting algal biomass growth for biofuel/biogas generation.

Comments

This is the authors' accepted version of the article published in Chemical Engineering Journal . The published version can be accessed at https://doi.org/10.1016/j.cej.2018.07.216 .

DOI

10.1016/j.cej.2018.07.216

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Publisher Citation

Terracciano, Amalia, Christos Christodoulatos, Agamemnon Koutsospyros, Zhaoyu Zheng, Tsan-Liang Su, Benjamin Smolinski, Per Arienti, and Xiaoguang Meng. "Degradation of 3-nitro-1, 2, 4-trizole-5-one (NTO) in wastewater with UV/H2O2 oxidation." Chemical Engineering Journal 354 (2018): 481-491.

Available for download on Sunday, August 02, 2020

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