Breakage and re-growth of flocs: Effect of additional doses of coagulant species

Water Research

Volumn 45, Issue 20, 2011, Pages 6718-6724

  Yu, Wenzheng ^a,b   Gregory, John ^a   Campos, Luiza C ^a  

^a UNIVERSITY COLLEGE LONDON   (United Kingdom)

^b HARBIN INSTITUTE OF TECHNOLOGY   (China)

Author keywords

Alum; Floc breakage; Floc re growth; Kaolin; PACl

Indexed keywords

ALUMINUM CHLORIDE; CHLORINE COMPOUNDS; KAOLIN;

ALUM; FLOC BREAKAGE; KAOLIN SUSPENSIONS; OPTICAL MONITORING; PACL; POLYALUMINUM CHLORIDE; RE-GROWTH; SHEAR CONDITIONS;

COAGULATION;

ALUMINUM; ALUMINUM CHLORIDE; COAGULATING AGENT; KAOLIN; MONOMER; POLYALUMINUM CHLORIDE; POLYMER; UNCLASSIFIED DRUG;

ALUMINUM OXIDE; AMORPHOUS MEDIUM; COAGULATION; FLOCCULATION; KAOLIN; MONITORING; REGROWTH;

ARTICLE; ELECTROPHORETIC MOBILITY; FLOC; FLOCCULATION; PRIORITY JOURNAL; SURFACE PROPERTY; SUSPENSION;

EID: 81355161743     PISSN: 00431354     EISSN: 18792448     Source Type: Journal    
DOI: 10.1016/j.watres.2011.10.016     Document Type: Article

References (23)

1. Chavez A., Jimenez B. Particle size distribution (psd) obtained in effluents from an advanced primary treatment process using different coagulants. Chemical Water and Wastewater Treatment VI 2000, 257-268. Springer, Berlin. H.H. Hahn, E. Hoffmann, H. Odegaard (Eds.).
2. Duan J.M., Gregory J. Coagulation by hydrolysing metal salts. Advances in Colloid and Interface Science 2003, 100:475-502.
3. Duffy S.J., Vanloon G.W. Characterization of amorphous aluminum hydroxide by the ferron method. Environmental Science & Technology 1994, 28:1950-1956.
4. Ehrl L., Soos M., Morbidelli M. Dependence of aggregate strength, structure, and light scattering properties on primary particle size under turbulent conditions in stirred tank. Langmuir 2008, 24:3070-3081.
5. Gregory J. Particle interactions in flowing suspensions. Advances in Colloid and Interface Science 1982, 17:149-160.
6. Gregory J., Nelson D.W. Monitoring of aggregates in flowing suspensions. Colloids and Surfaces 1986, 18:175-188.
7. Jarvis P., Jefferson B., Parsons S.A. Breakage, regrowth, and fractal mature of natural organic matter flocs. Environmental Science & Technology 2005, 39:2307-2314.
8. Jarvis P., Jefferson B., Parsons S.A. Floc structural characteristics using conventional coagulation for a high doc, low alkalinity surface water source. Water Research 2006, 40:2727-2737.
9. Li T., Zhu Z., Wang D.S., Yao C.H., Tang H.X. The strength and fractal dimension characteristics of alum-kaolin flocs. International Journal of Mineral Processing- 2007, 82:23-29.
10. McCurdy K., Carlson K., Gregory D. Floc morphology and cyclic shearing recovery: Comparison of alum and polyaluminum chloride coagulants. Water Research 2004, 38:486-494.
11. Pernitsky D.J., Edzwald J.K. Solubility of polyaluminium coagulants. Journal of Water Supply: Research and Technology-AQUA 2003, 52:395-406.
12. Serra T., Colomer J., Logan B.E. Efficiency of different shear devices on flocculation. Water Research 2008, 42:1113-1121.
13. Solomentseva I., Barany S., Gregory J. The effect of mixing on stability and break-up of aggregates formed from aluminum sulfate hydrolysis products. Colloids and Surfaces A 2007, 298:34-41.
14. Van Benschoten J.E., Edzwald J.K. Chemical aspects of coagulation using aluminum salts.1. Hydrolytic reactions of alum and polyaluminum chloride. Water Research 1990, 24:1519-1526.
15. Wang D.S., Sun W., Xu Y., Tang H.X., Gregory J. Speciation stability of inorganic polymer flocculant-pacl. Colloids and Surfaces A 2004, 243:1-10.
16. Wang Y., Gao B.Y., Xu X.M., Xu W.Y., Xu G.Y. Characterization of floc size, strength and structure in various aluminum coagulants treatment. Journal of Colloid and Interface Science 2009, 332:354-359.
17. Wu X.H., Ge X.P., Wang D.S., Tang H.X. Distinct coagulation mechanism and model between alum and high al-13-pacl. Colloids and Surfaces A 2007, 305:89-96.
18. Xiao F., Zhang X.R., Lee C. Is electrophoretic mobility determination meaningful for aluminum(iii) coagulation of kaolinite suspension?. Journal of Colloid and Interface Science 2008, 327:348-353.
19. Yu W.Z., Gregory J., Campos L. Breakage and regrowth of Al-humic flocs - effect of additional coagulant dosage. Environmental Science and Technology 2010, 44:6371-6376.
20. Yu W.Z., Gregory J., Campos L. The effect of additional coagulant on the re-growth of alum-kaolin flocs. Separation and Purification Technology 2010, 74:305-309.
21. Yukselen M.A., Gregory J. Breakage and re-formation of alum flocs. Environmental Engineering Science 2002, 19:229-236.
22. Yukselen M.A., Gregory J. The effect of rapid mixing on the break-up and re-formation of flocs. Journal of Chemical Technology & Biotechnology 2004, 79:782-788.
23. Yukselen M.A., Gregory J. The reversibility of floc breakage. International Journal of Mineral Processing 2004, 73:251-259.