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RISS 인기검색어
- 검색키워드
- 저자 : Chung-Hsuang Hung (검색결과 3 건)
- 무료
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Ching Yuan,Chia-Ren Tsai,Chung-Hsuang Hung 한국지하수토양환경학회 2014 지하수토양환경 Vol.19 No.5
A 1.5 m (L) × 1.0 m (W) × 1.1 m (H) polypropylene (PP) field scale electroniketic system coupled with stainless steel electrodes was designed to examined metal removal performance applied 0.2-0.35 V/cm potential gradient and 0.05-0.5M lactic acid for 20 day. Electroosmosis permeabilities of 2.2 × 10−5cm2/V-s to 4.8 × 10−5cm2/V-s were observed and it increased with the potential gradient increased. The reservoir pH controlled at 7.0 ± 1.0 has been effectively diminished the clogging of most metal oxides. The best removal efficiency of Zn, Pb, and Ni was 78.4%, 84.3%, and 40.1%, respectively, in the field scale EK system applied 0.35 V/cm and 0.05M lactic acid for 20 days. Increasing potential gradient would more effectively enhance metal removal than increasing concentration of processing fluid. The reservoir and soil temperatures were majorly related to potential gradient and power consumptio. A 4-16oC above room temperature was observed in the investigated system. It was found that the temperature increase in soil transported the pore water and metals from bottom to the topsoil. This vertical transport phenomenon is critical for the electrokinetic process to remediate in-situ deep pollution. A 1.5 m (L) × 1.0 m (W) × 1.1 m (H) polypropylene (PP) field scale electroniketic system coupled with stainless steelelectrodes was designed to examined metal removal performance applied 0.2-0.35 V/cm potential gradient and 0.05-0.5Mlactic acid for 20 day. Electroosmosis permeabilities of 2.2 × 10−5cm2/V-s to 4.8 × 10−5cm2/V-s were observed and itincreased with the potential gradient increased. The reservoir pH controlled at 7.0 ± 1.0 has been effectively diminishedthe clogging of most metal oxides. The best removal efficiency of Zn, Pb, and Ni was 78.4%, 84.3%, and 40.1%,respectively, in the field scale EK system applied 0.35 V/cm and 0.05M lactic acid for 20 days. Increasing potentialgradient would more effectively enhance metal removal than increasing concentration of processing fluid. The reservoirand soil temperatures were majorly related to potential gradient and power consumptio. A 4-16oC above room temperaturewas observed in the investigated system. It was found that the temperature increase in soil transported the pore water andmetals from bottom to the topsoil. This vertical transport phenomenon is critical for the electrokinetic process to remediatein-situ deep pollution.
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Yuan, Ching,Tsai, Chia-Ren,Hung, Chung-Hsuang Korean Society of Soil and Groundwater Environment 2014 지하수토양환경 Vol.19 No.5
A $1.5m(L){\times}1.0m(W){\times}1.1m(H)$ polypropylene (PP) field scale electroniketic system coupled with stainless steel electrodes was designed to examined metal removal performance applied 0.2-0.35 V/cm potential gradient and 0.05-0.5M lactic acid for 20 day. Electroosmosis permeabilities of $2.2{\times}10^{-5}cm^2/V-s$ to $4.8{\times}10^{-5}cm^2/V-s$ were observed and it increased with the potential gradient increased. The reservoir pH controlled at $7.0{\pm}1.0$ has been effectively diminished the clogging of most metal oxides. The best removal efficiency of Zn, Pb, and Ni was 78.4%, 84.3%, and 40.1%, respectively, in the field scale EK system applied 0.35 V/cm and 0.05M lactic acid for 20 days. Increasing potential gradient would more effectively enhance metal removal than increasing concentration of processing fluid. The reservoir and soil temperatures were majorly related to potential gradient and power consumptio. A $4-16^{\circ}C$ above room temperature was observed in the investigated system. It was found that the temperature increase in soil transported the pore water and metals from bottom to the topsoil. This vertical transport phenomenon is critical for the electrokinetic process to remediate in-situ deep pollution.
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