Characteristic analysis on morphological evolution of suspended particles in water during dynamic flocculation process

Desalination and Water Treatment

Volumn 41, Issue 1-3, 2012, Pages 35-44

  Nan, Jun ^a   He, Weipeng ^a  

^a HARBIN INSTITUTE OF TECHNOLOGY   (China)

Author keywords

Breakage; Flocculation; Fractal dimension; Image analysis

Indexed keywords

EID: 84864085580     PISSN: 19443994     EISSN: 19443986     Source Type: Journal    
DOI: 10.1080/19443994.2012.664676     Document Type: Article

References (34)

1. M. Yukselen, J. Gregory, The reversibility of floc breakage, Int. J. Miner. Process. 73 (2004) 251-259.
2. T. Serra, J. Colomer, B.E. Logan, Efficiency of different shear devices on flocculation, Water Res. 42 (2008) 1113-1121.
3. J. Nan, W. He, X. Song, G. Li, Impact of dynamic distribution of floc particles on flocculation effect, J. Environ. Sci. 21 (2009) 1059-1065.
4. J. Duan, J. Gregory, Coagulation by hydrolysing metal salts, Adv. Colloid Interface Sci. 100-102 (2003) 475-502.
5. M. Boller, S. Blaser, Particles under stress, Water Sci. Technol. 37 (1998) 9-29.
6. T. Serra, J. Colomer, X. Casamitjana, Aggregation and breakup of particles in a shear flow, J. Colloid Interf. Sci. 187 (1997) 466-473.
7. P.T. Spicer, W. Keller, S.E. Pratsinis, The effect of impeller type on floc size and structure during shear-induced flocculation, J. Colloid Interf. Sci. 184 (1996) 112-122.
8. M. Soos, A.S. Moussa, L. Ehrl, J. Sefcik, H. Wu, M. Morbidelli, Effect of shear rate on aggregate size and morphology investigated under turbulent conditions in stirred tank, J. Colloid Interf. Sci. 319 (2008) 577-589.
9. R.K. Chakraborti, K.H. Gardner, J.F. Atkinson, J.E.V. Benschoten, Changes in fractal dimension during aggregation, Water Res. 37 (2003) 873-883.
10. D. Wang, R. Wu, Y. Jiang, C.W.K. Chow, Characterization of floc structure and strength: Role of changing shear rates under various coagulation mechanisms, Colloids Surf. A: Physicochem. Eng. Asp. 379 (2011) 36-42.
11. P. Jarvis, B. Jefferson, J. Gregory, S. Parsons, A review of floc strength and breakage, Water Res. 39 (2005) 3121-3137.
12. M. Kobayashi, Breakup and strength of polystyrene latex flocs subjected to a converging flow, Colloids Surf. A: Physicochem. Eng. Asp. 235 (2004) 73-78.
13. F. Xiao, K.M. Lam, X.Y. Li, R.S. Zhong, X.H. Zhang, PIV characterisation of flocculation dynamics and floc structure in water treatment, Colloids Surf. A: Physicochem. Eng. Asp. 379 (2011) 27-35.
14. E. Barbot, P. Dussouillez, J.Y. Bottero, P. Moulin, Coagulation of bentonite suspension by polyelectrolytes or ferric chloride: Floc breakage and reformation, Chem. Eng. J. 156 (2010) 83-91.
15. B.B. Mandelbrot, D.E. Passoja, A.J. Paullay, Fractal character of fracture surfaces of metals, Nature 308 (1984) 721-722.
16. J. Colomer, F. Peters, C. Marrase, Experimental analysis of coagulation of particles under low-shear flow, Water Res. 39 (2005) 2994-3000.
17. P.T. Spicer, S.E. Pratsinis, Coagulation and framentation: Universal steady-state particle-size distribution, AIChE J. 42 (1996) 1612-1620.
18. C. Selomulya, R. Amal, G. Bushell, T.D. Waite, Evidence of shear rate dependence on restructuring and breakup of latex aggregates, J. Colloid Interf. Sci. 236 (2001) 67-77.
19. M.A. Yukselen, J. Gregory, Breakage and re-formation of alum flocs, Environ. Eng. Sci. 19 (2002) 229-236.
20. J. Duan, J. Gregory, The influence of silicic acid on aluminium hydroxide precipitation and flocculation by aluminium salts, J. Inorg. Biochem. 69 (1998) 193-201.
21. P.T. Spicer, S.E. Pratsinis, J. Raper, R. Amal, G. Bushell, G. Meesters, Effect of shear schedule on particle size, density, and structure during flocculation in stirred tanks, Powder Technol. 97 (1998) 26-34.
22. R.K. Chakraborti, J.F. Atkinson, J.E.V. Benschoten, Characterization of alum floc by image analysis, Environ. Sci. Technol. 34 (2000) 3969-3976.
23. C.P. Johnson, X. Li, B.E. Logan, Settling velocities of fractal aggregates, Environ. Sci. Technol. 30 (1996) 1911-1918.
24. P. Meakin, Fractal aggregates, Adv. Colloid Interface Sci. 28 (1987) 249-331.
25. B.E. Logan, J.R. Kilps, Fractal dimensions of aggregates formed in different fluid mechanical environments, Water Res. 29 (1995) 443-453.
26. P.T. Spicer, S.E. Pratsinis, Shear-induced flocculation: The evolution of floc structure and the shape of the size distribution at steady state, Water Res. 30 (1996) 1049-1056.
27. D.H. Li, J. Ganczarczyk, Fractal geometry of particle aggregates generated in water and wastewater treatment processes, Environ. Sci. Technol. 23 (1989) 1385-1389.
28. L.H. Mikkelsen, K. Keiding, The shear sensitivity of activated sludge: An evaluation of the possibility for a standardised floc strength test, Water Res. 36 (2002) 2931-2940.
29. L.B. Brakalov, A connection between the orthokinetic coagulation capture efficiency of aggregates and their maximum size, Chem. Eng. Sci. 42 (1987) 2373-2383.
30. R.J. François, Strength of aluminium hydroxide flocs, Water Res. 21 (1987) 1023-1030.
31. G.C. Bushell, Y.D. Yan, D. Woodfield, J. Raper, R. Amal, On techniques for the measurement of the mass fractal dimension of aggregates, Adv. Colloid Interface Sci. 95 (2002) 1-50.
32. H. Kockar, M. Bayirli, M. Alper, A new example of the diffusion-limited aggregation: Ni-Cu film patterns, Appl. Surf. Sci. 256 (2010) 2995-2999.
33. V. Becker, E. Schlauch, M. Behr, H. Briesen, Restructuring of colloidal aggregates in shear flows and limitations of the freedraining approximation, J. Colloid Interf. Sci. 339 (2009) 362-372.
34. M. Stone, B.G. Krishnappan, Floc morphology and size distributions of cohesive sediment in steady-state flow, Water Res. 37 (2003) 2739-2747.