Browse > Article
http://dx.doi.org/10.6110/KJACR.2012.24.5.454

A Study on the Positively Charged Filter for Removing Fine Particles in Water  

Jung, Sung-Hak (Mechanical Material and Parts Center, Busan Techno-Park)
Kim, Jong-Won (Mechanical Material and Parts Center, Busan Techno-Park)
Kim, Sang-Hee (Mechanical Material and Parts Center, Busan Techno-Park)
Jeon, Byung-Heon (Mechanical Material and Parts Center, Busan Techno-Park)
Lee, Seung-Gap (Mechanical Material and Parts Center, Busan Techno-Park)
Lee, Jae-Keun (EcoEnergy Research Institute)
Ahn, Young-Chull (Department of Architectural Engineering, Pusan National University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.24, no.5, 2012 , pp. 454-460 More about this Journal
Abstract
The purpose of the present work is to investigate the removal characteristics of positively charged filters for capturing negatively charged particles such as bacteria and virus in water. In order to reduce the pressure drop and increase the filtration efficiency, the filter media, modified by charge modifier having positive functional groups, is developed and evaluated. Improved liquid filters have been developed with the modified surface charge to capture and adsorb particles by electrokinetic interaction between the filter surface and particles contained in an aqueous liquid. The positively charged filter media is composed of glass fiber, cellulose and poly-ethylenimine resin for positively charging with the variation of volume ratio. The zeta potential value of the positively charged filter is +37.92 mV at the glass fiber and cellulose content ratio of 50 : 50 with resin content of 100%, while that of the PSL test particle is -23.5 mV at pH 7. The removal efficiency of the electro-positively charged filter is 98% for PSL particles of 0.11 ${\mu}m$, while that of the negatively charged filter is 7%. The positively charged filter media showed the potential to be an effective method for removing fine particles from the contaminated water for liquid filtration.
Keywords
Positively charged filter; Hydrosol; Glass fiber; Zeta-potential;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Michel, J. M., 1987, Filtration principle and practices, Marcel Decker. Inc.
2 Burt, H., Lewis, D. M., and Tapley, K. N., 1996, Resin coating for capillaries giving a net positive charge and great potential for customed modification of surface properties, Journal of chromatography, Vol. 739, pp. 367-371.   DOI
3 Chang, J. D., Chun, M. S., Chung, G. Y., and Kim, J. J., 2000, The influence of solution ionic strength on the permeate flux during deadend membrane filtration of colloidal suspensions, Journal of the Korean Institute of Chemical Engineers, Vol. 38, pp. 485-490.
4 Destephen, J. A. and Choi, K. J., 1996, Modeling of filtration processes of fibrous nanofilter media, Separation Technology, pp. 55-67.
5 Geriba, C. P., Hou, K. C., Babineau, R. A., and Flore, J. V., 1980, Pyorogen control by depth filtration, Pharm. Tech, pp. 83-89.
6 Hazel, W., Anne, N., Asa, T., and Jarl, R., 2001, Aqueous amino silan modification of e-glass surface, Journal of Colloid and Interface Science, pp. 136-146.
7 Shin, J. H., Kim, G. T., Lee, J. S., Ahn, Z. S., Sung, C. M., Cha, S. R., Park, S. G., and Lee, J. K., 2004, Design and performance of electropositively charged filter for removing fine particles in liquid filtration, 9th World Filtration Congress, The American Filtration and Separation Society.
8 Kim, J. W., Ahn, Y. C., Yi, B. K., and Jeong, H. J., 2010, Development of nano ceramic filter for the removal of ultra fine particles, Journal of Air-Conditioning and Refrigeration Engineering, Vol. 22, No. 1, pp. 13-20.
9 Kim, G. T., Ahn, Y. C., and Lee, J. K., 2008, Characteristic analysis of electret filters made by electrospinning, Journal of Air-Conditioning and Refrigeration Engineering, Vol. 20, No. 12, pp. 820-824.
10 Lee, C. G., Joo, H. Y., Lee, J. K., Ahn, Y. C., and Park S. E., 2006, Development and performance evaluation of positively charged porous filter media for water purification system, Proceedings of SAREK Summer Conference, pp. 95-98.
11 ASTM F 795, 1988, Standard Practice for Determining the Performance of a Filter Medium Employing a Single-Pass, Constant-Rate, Liquid Test, American Society for Testing and Materials.
12 ASTM D 6698, 2000, Standard Test Method for Turbidity of Water, American Society for Testing and Materials.