An improved collision efficiency model for particle aggregation

Olsen, Aaron, Franks, George, Biggs, Simon and Jameson, Graeme J. (2006) An improved collision efficiency model for particle aggregation. Journal of Chemical Physics, 125 18: . doi:10.1063/1.2387172

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Author Olsen, Aaron
Franks, George
Biggs, Simon
Jameson, Graeme J.
Title An improved collision efficiency model for particle aggregation
Journal name Journal of Chemical Physics   Check publisher's open access policy
ISSN 0021-9606
Publication date 2006-11-14
Sub-type Article (original research)
DOI 10.1063/1.2387172
Open Access Status File (Publisher version)
Volume 125
Issue 18
Total pages 9
Place of publication Melville, NY, United States
Publisher A I P Publishing LLC
Language eng
Abstract A generalized geometric model is presented which describes the collision efficiency factor of aggregation (the probability of a binary particle or aggregate collision resulting in adhesion) for systems comprised of two oppositely charged species. Application of the general model to specific systems requires calculation of the area of each species available for collision with a second species. This is in contrast to previous models developed for polymer-particle flocculation that are based on the fractional surface coverage of adsorbed polymer. The difference between these approaches is suggested as an explanation for previously observed discrepancies between theory and observation. In the current work the specific case of oppositely charged nondeformable spherical particles (heteroaggregation) is quantitatively addressed. The optimum concentration of oppositely charged particles for rapid aggregation (maximum collision efficiency) as a function of relative particle size is calculated and an excellent correlation is found with data taken from literature.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Faculty of Engineering, Architecture and Information Technology Publications
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Citation counts: TR Web of Science Citation Count  Cited 7 times in Thomson Reuters Web of Science Article | Citations
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