TY - JOUR
T1 - The coagulation rate of charged aerosols in ionized gases
AU - Matsoukas, Themis
N1 - Funding Information:
Acknowledgment is made to the Donors of The Petroleum Research Fund administered by the American Chemical Society for support of this research.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1997/3/15
Y1 - 1997/3/15
N2 - We obtain analytical expressions for the coagulation rate of aerosols in ionized gases taking into account the statistical distribution of the aerosol charge due to the random nature the charging process. Depending on the asymmetry of the ionic environment, the charge distribution may be bipolar (symmetric charging) or unipolar (highly asymmetric charging). In symmetric charging the attraction between opposite charges is almost exactly counter-balanced by repulsion between like charges and the net effect is a slight increase in the overall coagulation rate. In asymmetric charging all particles carry charges of the same polarity, interparticle interactions are repulsive, and the rate of coagulation decreases. However, the effect of the charge distribution in these systems is to increase the rate of coagulation above the rate that would be obtained if all particles carried the mean charge. This increase is substantial for larger particles in highly asymmetric ionic environments.
AB - We obtain analytical expressions for the coagulation rate of aerosols in ionized gases taking into account the statistical distribution of the aerosol charge due to the random nature the charging process. Depending on the asymmetry of the ionic environment, the charge distribution may be bipolar (symmetric charging) or unipolar (highly asymmetric charging). In symmetric charging the attraction between opposite charges is almost exactly counter-balanced by repulsion between like charges and the net effect is a slight increase in the overall coagulation rate. In asymmetric charging all particles carry charges of the same polarity, interparticle interactions are repulsive, and the rate of coagulation decreases. However, the effect of the charge distribution in these systems is to increase the rate of coagulation above the rate that would be obtained if all particles carried the mean charge. This increase is substantial for larger particles in highly asymmetric ionic environments.
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U2 - 10.1006/jcis.1996.4723
DO - 10.1006/jcis.1996.4723
M3 - Article
AN - SCOPUS:0030732227
SN - 0021-9797
VL - 187
SP - 474
EP - 483
JO - Journal of Colloid And Interface Science
JF - Journal of Colloid And Interface Science
IS - 2
ER -