Dependence of floc properties on coagulant type, dosing mode and nature of particles

Water Research

Volumn 68, Issue , 2015, Pages 119-126

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

^a UNIVERSITY COLLEGE LONDON   (United Kingdom)

^b IMPERIAL COLLEGE LONDON   (United Kingdom)

Author keywords

Al(III); Coagulation; Hydroxide precipitate; PACl; Turbidity fluctuations

Indexed keywords

ALKALINITY; ALUMINUM CHLORIDE; CHLORINE COMPOUNDS; CLAY; COAGULATION; KAOLIN; LIGHT SCATTERING; TURBIDITY;

FLOC PROPERTIES; KAOLIN PARTICLES; KAOLIN SUSPENSIONS; MICROSCOPE IMAGES; MONITORING RESULTS; PACL; PARTICLE CONCENTRATIONS; SCATTERING PROPERTY;

SUSPENSIONS (FLUIDS);

ALUMINUM CHLORIDE; COAGULATING AGENT; HYDROXIDE; KAOLIN; ALUMINUM DERIVATIVE; ALUMINUM HYDROXIDE; ALUMINUM OXYCHLORIDE; ALUMINUM SILICATE; CHLORIDE; CLAY; HYDROXIDE ION;

ALUMINUM; AMORPHOUS MEDIUM; COAGULATION; CONCENTRATION (COMPOSITION); FLOCCULATION; HYDROXIDE; KAOLIN; MICROSCOPY;

ARTICLE; CLAY; FLOCCULATION; LIGHT SCATTERING; PARTICLE SIZE; PH; STRENGTH; SUSPENSION; ZETA POTENTIAL; CHEMISTRY; SEWAGE;

ALUMINUM COMPOUNDS; ALUMINUM HYDROXIDE; ALUMINUM SILICATES; CHLORIDES; FLOCCULATION; HYDROXIDES; WASTE DISPOSAL, FLUID;

EID: 84908131512     PISSN: 00431354     EISSN: 18792448     Source Type: Journal    
DOI: 10.1016/j.watres.2014.09.045     Document Type: Article

References (27)

1. Bertsch P.M. Conditions for Al-13 polymer formation in partially neutralized aluminum solutions. Soil Sci. Soc. Am. J. 1987, 51:825-828.
2. Bottero J.Y., Cases J.M., Fiessinger F., Poirier J.E. Studies of hydrolyzed aluminum-chloride solutions .1. Nature of aluminum species and composition of aqueous-solutions. J. Phys. Chem. 1980, 84:2933-2939.
3. Bottero J.Y., Axelos M., Tchoubar D., Cases J.M., Fripiat J.J., Fiessinger F. Mechanism of formation of aluminum trihydroxide from keggin Al 13 polymers. J. Colloid Interface Sci. 1987, 117:47-57.
4. Dempsey B.A., Ganho R.M., O'Melia C.R. The coagulation of humic substances by means of aluminum salts. J. Am. Water Works Assoc. 1984, 76:141-150.
5. Gray K.A., Yao C.H., O'Melia C.R. Inorganic metal polymers - preparation and characterization. J. Am. Water Works Assoc. 1995, 87:136-146.
6. Gregory J. Monitoring particle aggregation processes. Adv. Colloid Interface Sci. 2009, 147-48:109-123.
7. Gregory J. Optical monitoring of particle aggregates. J. Environ. Sci. 2009, 21:2-7.
8. Hussain S., van Leeuwen J., Chow C., Beecham S., Kamruzzaman M., Wang D.S., Drikas M., Aryal R. Removal of organic contaminants from river and reservoir waters by three different aluminum-based metal salts: coagulation adsorption and kinetics studies. Chem. Eng. J. 2013, 225:394-405.
9. Johansson G. On the crystal structures of some basic aluminium salts. Acta Chem. Scand. 1960, 14:771-773.
10. Klute R. Destabilization and aggregation in turbulent pipe flow. Chemical Water and Wastewater Treatment 1990, 33-54. Springer-Verlag, Berlin. H.H. Hahn, R. Klute (Eds.).
11. Lin J.L., Huang C.P., Chin C.J.M., Pan J.R. The origin of Al(OH)(3)-rich and Al-13-aggregate flocs composition in PACl coagulation. Water Res. 2009, 43:4285-4295.
12. Matsui Y., Yuasa A., Furuya Y., Kamei T. Dynamic analysis of coagulation with alum and PACl. J. Am. Water Works Assoc. 1998, 90:96-106.
13. Shi B.Y., Wei Q.S., Wang D.S., Zhu Z., Tang H.X. Coagulation of humic acid: the performance of preformed and non-preformed Al species. Colloids Surf. A Physicochem. Eng. Aspects 2007, 296:141-148.
14. Trinh T.K., Kang L.S. Response surface methodologicalapproach to optimize the coagulation-flocculation process in drinking water treatment. Chem. Eng. Res. Des. 2011, 89:1126-1135.
15. Van Benschoten J.E., Edzwald J.K. Chemical aspects of coagulation using aluminum salts .1. Hydrolytic reactions of alum and polyaluminum chloride. Water Res. 1990, 24:1519-1526.
16. Wang D.S., Sun W., Xu Y., Tang H.X., Gregory J. Speciation stability of inorganic polymer flocculant-PACl. Colloids Surf. A Physicochem. Eng. Aspects 2004, 243:1-10.
17. Wu X.H., Ge X.P., Wang D.S., Tang H.X. Distinct mechanisms of particle aggregation induced by alum and PACl: floc structure and DLVO evaluation. Colloids Surf. A Physicochem. Eng. Aspects 2009, 347:56-63.
18. Xiao F., Ma J., Yi P., Huang J.C.H. Effects of low temperature on coagulation of kaolinite suspensions. Water Res. 2008, 42:2983-2992.
19. Yan M.Q., Wang D.S., Qu J.H., Ni J.R., Chow C.W.K. Enhanced coagulation for high alkalinity and micro-polluted water: the third way through coagulant optimization. Water Res. 2008, 42:2278-2286.
20. Yan M.Q., Wang D.S., Ni J.R., Qu J.H., Chow C.W.K., Liu H.L. Mechanism of natural organic matter removal by polyaluminum chloride: effect of coagulant particle size and hydrolysis kinetics. Water Res. 2008, 42:3361-3370.
21. Yan M.Q., Wang D.S., Yu J.F., Ni J.R., Edwards M., Qu H.H. Enhanced coagulation with polyaluminum chlorides: role of pH/Alkalinity and speciation. Chemosphere 2008, 71:1665-1673.
22. Ye C.Q., Wang D.S., Shi B.Y., Yu J.F., Qu J.H., Edwards M., Tang H.X. Alkalinity effect of coagulation with polyaluminum chlorides: role of electrostatic patch. Colloids Surf. A-Physicochem. Eng. Aspects 2007, 294:163-173.
23. Yu W.Z., Gregory J., Campos L., Li G.B. The role of mixing conditions on floc growth, breakage and re-growth. Chem. Eng. J. 2011, 171:425-430.
24. Yu W.Z., Gregory J., Campos L.C. Breakage and re-growth of flocs: effect of additional doses of coagulant species. Water Res. 2011, 45:6718-6724.
25. Yukselen M.A., Gregory J. The reversibility of floc breakage. Int. J. Miner. Process. 2004, 73:251-259.
26. Zarchi I., Friedler E., Rebhun M. Polyaluminium chloride as an alternative to alum for the direct filtration of drinking water. Environ. Technol. 2013, 34:1199-1209.
27. Zouboulis A., Traskas G., Samaras P. Comparison of efficiency between poly-aluminium chloride and aluminium sulphate coagulants during full-scale experiments in a drinking water treatment plant. Sep. Sci. Technol. 2008, 43:1507-1519.