Destruction of methylphosphonic acid in a supercritical water oxidation bench-scale double wall reactor

作     者：Bambang Veriansyah Eun-Seok Song Jae-Duck Kim 

作者机构：Supercritical Fluid Research Laboratory Korea Institute of Science and Technology (KIST) 39-1 Hawolgok-dong Seoungbuk-gu Seoul 136-791 Korea 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2011年第23卷第4期

页      面：545-552页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：supported by Agency for Defense Development Korea and Korea Institute of Scienceand Technology 

主　　题：supercritical water oxidation destruction efficiency methylphosphonic acid reaction kinetic nonlinear regression 

摘      要：The destruction of methylphosphonic acid （MPA）, a final product by hydrolysis/neutralization of organophosphorus agents such as sarin and VX （O-ethyl S-[2-（diisopropylamino）ethyl] methylphosphonothionate）, was investigated in a a bench-scale, continuous concentric vertical double wall reactor under supercritical water oxidation condition. The experiments were conducted at a temperature range of 450–600°C and a fixed pressure of 25 MPa. Hydrogen peroxide was used as an oxidant. The destruction efficiency （DE） was monitored by analyzing total organic carbon （TOC） and MPA concentrations using ion chromatography on the liquid effluent samples. The results showed that the DE of MPA up to 99.999% was achieved at a reaction temperature of 600°C, oxygen concentration of 113% storichiometric requirement, and reactor residence time of 8 sec. On the basis of the data derived from experiments, a global kinetic rate equation for the DE of MPA and DE of TOC were developed by nonlinear regression analysis. The model predictions agreed well with the experimental data.