Influence of particle concentration on initial collection efficiency and surface coveragein porous media filtration

Wai K. Ng; Veeriah Jegatheesan; Seung-Hwan Lee

Korean Journal of Chemical Engineering, Vol.23, No.2, 333-342, March, 2006

DOI10.1007/BF02705738 Export Citation

Influence of particle concentration on initial collection efficiency and surface coveragein porous media filtration

Wai K. Ng, Veeriah Jegatheesan, and Seung-Hwan Lee^{1, †}

School of Engineering, James Cook University, Townsville, QLD 4811, Australia
¹School of Civil and Environmental Engineering, Kumoh National Institute of Technology, Gumi 730-701, Korea

E-mail:

Four sizes (0.095, 0.53, 1.0 and 2.01μm) of polystyrene latex particles were used to prepare monodis-persed suspensions at three different ionic strengths (10?3, 10?2.5 and 10?2M KCl). Filtration experiments were conductedusing those suspensions in a filter column with glass beads as porous medium. The filter bed depth and the filtrationvelocity were kept at 5cm and 1m/h, respectively. When suspensions with equal mass concentrations (0.2mg/L) orequal surface area concentrations (0.12cm2/mL) were filtered through the system, the largest particles exhibited higherinitial single collector efficiency, η. The difference between the η of largest particles and the smaller particles was prominent for suspensions with equal surface area concentrations at higher ionic strengths. The collision efficiency, α ofthose particles exhibits higher values at higher ionic strengths. Both at equal mass concentration and equal surface areaconcentration, α is only slightly dependent on particle sizes when compared to its dependence on ionic strength. Further,it was found that the specific surface coverage was similar for 0.095μm, 0.53μm and 1.0μm particles during thetransient stage of filtration at any ionic strength when the surface area concentrations of those suspension were equal.

Keywords:Collision Efficiency;Initial Single Collector Efficiency;Ionic Strength;Latex Particles;Porous Media Filtration,Specific Surface Coverage

[References]

Bai RB, Tien C, J. Colloid Interface Sci., 179(2), 631 (1996)
Chang JG, Mathematical modelling of transient behaviour of deep bed filtration, Ph.D. Dissertation, AIT, Bangkok, Thailand (1989)
Choi DY, Jin LM, Wang D, Row KH, Korean J. Chem. Eng., 20, 716 (2003)
Elimelech M, The effect of particle size on the kinetics of deposition of Brownian particles in porous media, PhD Dissertation, The Johns Hopkins University (1989)
Elimelech M, Water Res., 26(1), 1 (1992)
Hahm HC, Lee DW, Hong WH, Lee TY, Lee CH, Korean J. Chem. Eng., 20(4), 716 (2003)
Ives KJ, Water Res., 4(3), 201 (1970)
Jegatheesan V, Vigneswaran S, Water Res., 31(11), 2910 (1997)
Jegatheesan V, Effect of surface chemistry on the transient stages of deep bed filtration, PhD Dissertation, University of Technology Sydney (2000)
Jegatheesan V, Vigneswaran S, Sep. Sci. Technol., 35(7), 967 (2000)
Jegatheesan V, Vigneswaran S, Lee SH, Korean J. Chem. Eng., 22(1), 142 (2005)
Johnson PR, Elimelech M, Langmuir, 11(3), 801 (1995)
O’Melia CR, Stumm W, Jour. of AWWA, 59(11), 1393 (1967)
O’Melia CR, Ali W, Progr. Water Technol., 10, 167 (1978)
Rajagopalan R, Tien C, AIChE J., 22, 523 (1976)
Raveendran P, Mechanisms of particle detachment during filter backwashing, Ph.D dissertation, School of Civil Engineering, Georgia Institute of Technology, Atlanta, Georgia (1993)
So JH, Oh WK, Yang SM, Korean J. Chem. Eng., 21(5), 921 (2004)
Tien C, Granular filtration of aerosols and hydrosols, Stoneham, MA, Buttersworth Publishers (1989)
Tobiason JE, Physicochemical aspects of particle deposition in porous media, Ph.D dissertation, The Johns Hopkins University, Baltimore, Maryland (1987)
Tufenkji N, Elimlech M, Environ. Sci. Technol., 38, 529 (2004)
Yao KM, Habibian MT, O’Melia CR, Environ. Sci. Technol., 5, 1105 (1971)

[Referenced By]

[Related Articles]

[1] Bai RB, Tien C, J. Colloid Interface Sci., 179(2), 631 (1996)

[2] Chang JG, Mathematical modelling of transient behaviour of deep bed filtration, Ph.D. Dissertation, AIT, Bangkok, Thailand (1989)

[3] Choi DY, Jin LM, Wang D, Row KH, Korean J. Chem. Eng., 20, 716 (2003)

[4] Elimelech M, The effect of particle size on the kinetics of deposition of Brownian particles in porous media, PhD Dissertation, The Johns Hopkins University (1989)

[5] Elimelech M, Water Res., 26(1), 1 (1992)

[6] Hahm HC, Lee DW, Hong WH, Lee TY, Lee CH, Korean J. Chem. Eng., 20(4), 716 (2003)

[7] Ives KJ, Water Res., 4(3), 201 (1970)

[8] Jegatheesan V, Vigneswaran S, Water Res., 31(11), 2910 (1997)

[9] Jegatheesan V, Effect of surface chemistry on the transient stages of deep bed filtration, PhD Dissertation, University of Technology Sydney (2000)

[10] Jegatheesan V, Vigneswaran S, Sep. Sci. Technol., 35(7), 967 (2000)

[11] Jegatheesan V, Vigneswaran S, Lee SH, Korean J. Chem. Eng., 22(1), 142 (2005)

[12] Johnson PR, Elimelech M, Langmuir, 11(3), 801 (1995)

[13] O’Melia CR, Stumm W, Jour. of AWWA, 59(11), 1393 (1967)

[14] O’Melia CR, Ali W, Progr. Water Technol., 10, 167 (1978)

[15] Rajagopalan R, Tien C, AIChE J., 22, 523 (1976)

[16] Raveendran P, Mechanisms of particle detachment during filter backwashing, Ph.D dissertation, School of Civil Engineering, Georgia Institute of Technology, Atlanta, Georgia (1993)

[17] So JH, Oh WK, Yang SM, Korean J. Chem. Eng., 21(5), 921 (2004)

[18] Tien C, Granular filtration of aerosols and hydrosols, Stoneham, MA, Buttersworth Publishers (1989)

[19] Tobiason JE, Physicochemical aspects of particle deposition in porous media, Ph.D dissertation, The Johns Hopkins University, Baltimore, Maryland (1987)

[20] Tufenkji N, Elimlech M, Environ. Sci. Technol., 38, 529 (2004)

[21] Yao KM, Habibian MT, O’Melia CR, Environ. Sci. Technol., 5, 1105 (1971)