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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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The laboratory and field studies were conducted to identify an optimal injection concentration of nanoscale zero-valent iron particles (NZVI) and to evaluate the applicability of NZVI-based reactive zone technology to the site contaminated with trichloroethylene (TCE) DNAPL (Dense Non-Aqueous Phase Liquid). The laboratory test found an optimal injection concentration of NZVI of 5 g/L that could remove more than 95% of 0.15 mM TCE within 20 days. Eleven test wells were installed at the aquifer that was mainly composed of alluvial and weathered soils at a strong oxic condition with dissolved oxygen concentration of 3.50 mg/L and oxidation-reduction potential of 301 mV. NZVI of total 30 kg were successfully injected using a centrifugal pump. After 60 days from the NZVI injection, 86.2% of the TCE initially present in the groundwater was removed and the mass of TCE removed was 405 g. Nonchlorinated products such as ethane and ethene were detected in the groundwater samples. Based on the increased chloride ion concentration at the site, the mass of TCE removed was estimated to be 1.52 kg. This implied the presence of DNAPL TCE which contributed to a higher estimate of TCE removal than that based on the TCE concentration change.
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참고문헌 (22)
참고문헌 신청
Bacelona, M.J / 1985 / Practical guide for ground-water sampling :94
Elliott, D.W / 2001 / Field assessment of nanoscale bimetallic particles for groundwater treatment / Environ. Sci. Technol 35(24):4922~4926
Hara, S.O / 2006 / Field and laboratory evaluation of the treatment of DNAPL source zones using emulsified zerovalent iron / Remed. J 16(2):35~56
He, F / 2007 / Stabilization of Fe-Pd nanoparticles with sodium carboxymethyl cellulose for enhanced transport and dechlorination of trichloroethylene in soil and groundwater / Ind. Eng. Chem. Res 46(1):29~34
Jiemvarangkul, P / 2011 / Enhanced transport of polyelectrolyte stabilized nanoscale zero-valent iron (NZVI) in porous media / Chem. Eng. J 170(2):482~491
Elliott, D.W / 2001 / Field assessment of nanoscale bimetallic particles for groundwater treatment / Environ. Sci. Technol 35(24):4922~4926
Hara, S.O / 2006 / Field and laboratory evaluation of the treatment of DNAPL source zones using emulsified zerovalent iron / Remed. J 16(2):35~56
He, F / 2007 / Stabilization of Fe-Pd nanoparticles with sodium carboxymethyl cellulose for enhanced transport and dechlorination of trichloroethylene in soil and groundwater / Ind. Eng. Chem. Res 46(1):29~34
Jiemvarangkul, P / 2011 / Enhanced transport of polyelectrolyte stabilized nanoscale zero-valent iron (NZVI) in porous media / Chem. Eng. J 170(2):482~491
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