Oxidation of Chemical Warfare Agents in Supercritical Water

Abstract:

Oxidation of chemical warfare agents (CWAs) such as Sulfur Oxidation of chemical warfare agents (CWAs) such as Sulfur Mustard (HD) and Soman (GD) and their simulants 2-chloroethyl ethyl sulfide (2-CEES) and dimethyl methylphosphonate (DMMP) in supercritical water were studied by a batch reactor. Results showed that HD, GD and their simulants 2-CEES and DMMP could be effectively destroyed into their corresponding mineral compounds by supercritical water oxidation (SCWO). The mineral ratio was a function of reaction temperature, reaction time and oxidant concentration. But reaction temperature seemed to have more important effect on the mineral ratio than other two factors. Sulfur compounds 2-CEES and HD could easily be mineralized under 475°C and the inorganic products were mainly SO₃^2- and SO₄^2- , while complete oxidation of organic phosphorus reactants GD and DMMP needed a high temperature of >600°C. And under relatively low temperature, DMMP tended to form a white organic phosphorus polymer with P-C and P-O-P bonds. Results also indicated that P-F bond was more easily broken than P-C bond.

• Periodical: Advanced Materials Research (Volumes 356-360)
• Pages: 2610-2615
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.356-360.2610
• Online since: October 2011
• Authors: Lian Yuan Wang, Meng Meng Ma, Xiao Chun Hu, Guo Min Zuo, Hai Yan Zhu, Hai Rong Tang, Zhen Xing Cheng, Hong Hai Zhao
• Keywords: CWA, Mineral Ratio, Scwo, Stimulant

References

[1] N.B. Munro, S.S. Talmage, G.D. Griffin, et al: Environ. Health Pers. Vol. 107 (1999), p.933

[2] S. Bianchetta, L. Li, and E. F. Gloyna: Ind. Eng. Chem. Res. Vol. 38 (1999), p.2902

[3] B.Veriansyah, J.-D. Kim and J.-C. Lee: Ind. Eng. Chem. Res. Vol. 44 (2005), p.9014

[4] B.Veriansyah, J.-D. Kim, J.-C. Lee, and D. Hong.: Ind. Eng. Chem. Vol. 12 (2006), p.395

[5] B.Veriansyah, J.-D. Kim and J.-C. Lee.: Journal of Hazardous Materials Vol. 147 (2007), p.8

[6] P.A. Marrone, S.D. Cantwell and D.W. Dalton: Ind. Eng. Chem. Res. Vol. 44 (2005), p.9030

[7] B.D. Xiang. Treatment of sulfur-containing compound contaminated system using supercritical water oxidation [D]. Tsinghua University, Beijing, 1999, 184-187

[8] B.D. Xiang. Treatment of sulfur-containing compound contaminated system using supercritical water oxidation [D]. Tsinghua University, Beijing, 1999, 188-189

[9] Information on http://www.nap.edu/catalog/6150.html