Keywords
Adsorption; coagulation; floc breakage; flocculation; flocculation kinetics; fractals; hydrolyzing metal salts; polymeric flocculants; sweep flocculation
Definition
Flocculation is a process whereby small particles in suspension are caused to aggregate, giving large clusters (flocs) that are much more easily separated than the original particles. The process is in widespread use in many industrial applications.
Overview
Flocculation is a process that is widely used in industrial applications, such as biotechnology, mineral processing, papermaking, water and wastewater treatment, and others. It depends essentially on collision and attachment of particles in a suspension. In this way, particle aggregates (flocs) are formed that are very much larger than the original (primary) particles so that they can be more easily separated by physical methods. The generic term for this process is “aggregation,”...
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Coufort C, Bouyer D, Line A, Haut B (2007) Modelling of flocculation using a population balance equation. Chem Eng Process 46:1264–1273
Duan JM (1997) Influence of dissolved silica on flocculation of clay suspensions with hydrolysing metal salts. PhD Thesis, University of London
Duan JM, Gregory J (2003) Coagulation by hydrolysing metal salts. Adv Colloid Interface Sci 100:475–502
Elimelech M, Gregory J, Jia X, Williams RA (1995) Particle deposition and aggregation. Measurement, modelling and simulation. Butterworth Heinemann, Oxford
Fleer GJ, Cohen-Stuart MA, Scheutjens JMHM, Cosgove T, Vincent B (1993) Polymers at interfaces. Chapman & Hall, London
Gregory J, Barany S (2011) Adsorption and flocculation by polymers and polymer mixtures. Adv Colloid Interface Sci 169:1–12
Hunkeler D, Hernandez-Barajas J (1996) A concise review of the influence of synthesis and technological factors on the structure and properties of polyacrylamides. In: Finch CA (ed) Industrial water soluble polymers. Royal Society of Chemistry, Cambridge, pp 10–27
Meesters A, Ernst MH (1987) Numerical evaluation of self-preserving spectra in Smoluchowski coagulation theory. J Colloid Interface Sci 119:576–587
Moody GM (2007) Polymeric flocculants. In: Williams PA (ed) Handbook of industrial water soluble polymers. Wiley-Blackwell, Oxford, pp 134–156
Pelssers EGM, Cohen Stuart MA, Fleer GJ (1990) Kinetics of bridging flocculation – role of relaxations in the polymer layer. J Chem Soc Faraday Trans 86:1355–1361
Pernitsky DJ, Edzwald JK (2003) Solubility of polyaluminium coagulants. J Water Supp Res Technol Aqua 52:395–406
Richens DT (1997) The chemistry of aqua ions. Wiley, Chichester
Rosen JM (1984) A statistical description of coagulation. J Colloid Interface Sci 99:9–19
Thomas D, Judd S, Fawcett N (1999) Flocculation modelling: a review. Water Res 33:1579–1592
Yeung AKC, Pelton R (1996) Micromechanics: a new approach to studying the strength and breakup of flocs. J Colloid Interface Sci 184:579–585
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2013 Springer-Verlag Berlin Heidelberg
About this entry
Cite this entry
Gregory, J. (2013). Flocculation Fundamentals. In: Tadros, T. (eds) Encyclopedia of Colloid and Interface Science. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-20665-8_17
Download citation
DOI: https://doi.org/10.1007/978-3-642-20665-8_17
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-20664-1
Online ISBN: 978-3-642-20665-8
eBook Packages: Chemistry and Materials ScienceReference Module Physical and Materials ScienceReference Module Chemistry, Materials and Physics