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Electrophoretic flow
Posted 15.05.2012, 08:36 GMT-4 Version 4.2 0 Replies
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We intend to separate the components of a very dilute aqueous binary colloidal suspension using electrophoresis. The suspension contains two types of spherical colloidal particles, one having a radius of 50 nm and a zeta potential of −30 mV, while another of radius 20 nm and unknown zeta potential. Figure 9.25 shows the separation scheme. Both particles start at the same location and traverse the lengthLat different times when an electric field is applied between the electrodes as shown.
The length L is 200 μm. Under the external field, the larger particle travels the distance from start to finish in 12 seconds. What is the zeta potential of the smaller particle if it reaches the finish line in 26.5 seconds? The electrolyte
(1 : 1) concentration is 0.01M and the solvent viscosity is 0.001 Pa s. Since the suspension is very dilute, you can assume that the particle mobility can be adequately represented by the single particle mobility expressions. i want to calculate Henry's function.how can I model this problem with comsol?
I will be happy to see any reply or mph file for this problem.
Tanx
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Hello Adele Adria
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