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Aggregation and disaggregation of particles are two major processes controlling the PSD of dispersions. The balance of these processes depends on the flow shear field and on the aggregate (floc) strength (for example, Jackson and Burd 1998).
A key parameter in the aggregate breakage is the floc strength. The floc strength, methods of its measurement, as well as the modes of the floc breakage have been recently reviewed by Jarvis et al 2005a.
Jarvis et al 2004 investigated the strength of various types of flocs relevant to water treatment with a Malvern Mastersizer (Malvern Instruments Ltd., Malvern, UK, www.malvern.co.uk) laser diffractometer. They found that organic flocs showed most resistance to breakage across a wide range of the shear range.
| CITATION: Jonasz M. 2006. Aggregate strength (www.tpdsci.com/Tpc/FlcStr.php). In: Top. Part. Disp. Sci. (www.tpdsci.com). |
HISTORY: Published: 17-Jan-2006 Modified: 02-Jul-2006 Peer-reviewed: PENDING |
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