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http://dx.doi.org/10.7464/ksct.2010.16.2.145

Electroosmotic Water Removal in Wet Porous Materials  

Park, Seon-Mi (Department of Environmental Engineering, Yeungnam University)
Park, Mi-Jung (Department of Environmental Engineering, Yeungnam University)
Ha, Ji-Soo (Department of Energy and Environmental Science, Keimyung University)
Chang, Hyuk-Sang (Department of Environmental Engineering, Yeungnam University)
Publication Information
Clean Technology / v.16, no.2, 2010 , pp. 145-152 More about this Journal
Abstract
Various technical methods are applied for removing water from the water-retaining media, and the energy efficiency is the main concern in those methods. The electroosmotic process is studied as an efficient way for dewatering. An experimental electroosmotic reactor is designed and used for evaluating the effects of operational variables. The operational variables such as the electrical fields and the structure of water-retaining medias were studied. Three different shapes of polarized electric fields in ranges of 0-100 V/cm and 0-10 kHz are used as the source of electric voltage. The effect of electroosmotic process with respect to the structural variation is estimated by filling the electroosmotic reactor with the glass beads in 0.18 mm, 0.35 mm and 1.2 mm in diameters. 6% of water removal is obtained in the simulating electroosmotic reactor of glass beads. The estimated energy consumption in the simulating electroosmotic was 330~490 cal/g-water.
Keywords
Electroosmosis; Dewatering processes; Porous structure;
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  • Reference
1 Vijh, A. K., "Electro-osmotic Dewatering(EOD) of Clays and Suspension: Components of Voltage in Electroosmotic Cell," Dry. Technol., 17(3), 565-574 (1999).   DOI   ScienceOn
2 A-Asheh, S., Jumah, R., Banat, F., and Al-Zou'Bi, "Direct Current Electroosmosis Dewatering of Tomato Paste Suspension," Food Bioprod Process., 82(3), 193-200 (2004).   DOI   ScienceOn
3 Vijh, A. K., "Salient Experimental Observations on the Electroosmotic Dewatering(EOD) of Clays and Sludge and Their Interpretation," Dry. Technol., 17(1), 575-584 (1999).   DOI
4 Zhou, J., Zheng, L., Peng S., and Fuxing, D., "Water Removal from Sludge in a Hrizontal Eectric Field," Dry. Technol., 19(3,4), 627-638 (2001).   DOI
5 Reddy, R. K., Urbanek, A., and Khodadoust, A. P., "Electroosmotic Dewatering of Dredged Sediments: Bench-scale Investigation," J. Environ. Manage., 78(2), 200-208 (2006).   DOI   ScienceOn
6 Eykhoit, G. R., and Daniel, D. E, "Impact of System Chemistry on Electroosmosis in Contaminated Soil," J. Geotech. Eng.., 120(5), 797-815 (1994).   DOI   ScienceOn
7 Man, Y., and Guohua, C., "Enhanced Electroosmotic Dewatering of Fine Particle Suspension Using a Rotating Electrode," The 12th International Drying Symposiurn(IDS 2000), August 28-31, Noordwijerhou, The Netherlands, 2000.
8 Yoshida, H., "Practical Aspects of Dewatering Enhanced by Electro-osmosis," Dry. Technol., 11(4), 787-814 (1993).
9 Mitchell, J. K., Fundamentals of soil behavior, 3ed ed., John Wiley & Sons Inc., New York, 2001.
10 Chen, H., Mujumdar, A., and Raghavan, G., "Laboratory Experiments on Electroosmotic Dewatering of Vegetable Sludge and Mine Tailings," Dry. Technol., 14(10), 2435-2445 (1996).   DOI   ScienceOn
11 Bertolini, L., Coppola, L., Gastaldi, M., and Redaelli, E., "Electroosmotic Transport in Porous Construction Materials and Dehumidification of Masonry," Constr. Build Mater., 23(1), 254-263 (2009).   DOI   ScienceOn