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Nitro-aromatic Compounds (NACs) of explosives are structurally non-degradable materials that have an adverse effect to humans and ecosystems in case of emissions in natural due to the strong toxicity. In this study, batch test in the laboratory-scale has been conducted to find some process parameters of alkaline hydrolysis by considering the characteristics of NACs which are unstable in a base status and field application evaluation have been performed on the batch test results. Based on the experimental results of both laboratory and pilot-scale test, the optimum conditions of parameters for the alkaline hydrolysis of soils contaminated with explosives were pH 12.5, above the solid-liquid ratio 1 : 3, above the room temperature and 30 minute reaction time. In these four process parameters, the most important influencing factor was pH, and the condition of above pH 12.0 was necessary for high contaminated soils (more than 60 mg/kg). In the case of above pH 12.5, the efficiency of alkaline hydrolysis was very high regardless of the concentrations of contaminated soils. At pH 11.5, the removal efficiency of TNT was increased from 76.5% to 97.5% when the temperature in reactor was elevated from room temperature to 80℃. This result shows that it is possible to operate the alkaline hydrolysis at even pH 11.5 due to increased reaction rate depending on temperature adjustment. The results found in above experiments will be able to be used in alkaline hydrolysis for process improvement considering the economy.
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참고문헌 (12)
참고문헌 신청
Bajpai, R. / 2004 / A Kinetic model of aqueous-phase akali hydrolysis of 2,4,6 trinitrotoluene / J. Hazard. Mater :55~66
Emmrich, M. / 1999 / Kinetics of alkaline hydrolysis of 2,4,6-trinitrotoluene in aqueous solution and highly contaminated soils / Environ. Sci. Technol 33:3802~3805
Emmrich, M. / 2001 / Kinetic of the alkaline hydrolysis of important nitroaromatic Cocontaminants of 2,4,6-Trinitrotolune in highly contaminated soils / Environ. Sci. Technol :874~877
Hwang, S.C. / 2005 / Applicability of alkaline hydrolysis for remediation of TNT- contaminated water / Water Res :4503~4511
Korea Water Cooperation / 2002 / Prediction of water quality of Hantan river and remediation technology selection through remedial investigation of Darakdae shooting range
Emmrich, M. / 1999 / Kinetics of alkaline hydrolysis of 2,4,6-trinitrotoluene in aqueous solution and highly contaminated soils / Environ. Sci. Technol 33:3802~3805
Emmrich, M. / 2001 / Kinetic of the alkaline hydrolysis of important nitroaromatic Cocontaminants of 2,4,6-Trinitrotolune in highly contaminated soils / Environ. Sci. Technol :874~877
Hwang, S.C. / 2005 / Applicability of alkaline hydrolysis for remediation of TNT- contaminated water / Water Res :4503~4511
Korea Water Cooperation / 2002 / Prediction of water quality of Hantan river and remediation technology selection through remedial investigation of Darakdae shooting range
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