Electrophoresis of a single charged porous sphere in an infinite medium of electrolyte solution

摘要: Abstract Electrophoresis of a single charged porous sphere in an infinite medium electrolyte solution is investigated theoretically. The treated as Brinkman with uniformly distributed electric charges. General electrokinetic equations including the full nonlinear Poisson equation are employed governing equations, which then solved pseudo-spectral method based on Chebyshev polynomials. Key parameters interest examined for their effects particle motion. Motion-deterring effects, condensation effect and double layer polarization effect, separated from each other detail respective impact Debye–Huckel approximation found to overestimate mobility severely: Up ten times both highly permeable some situations, attributed effect. Convenient charts correction factors this overestimation provided facilitate usage by interested experimental researchers field study polyelectrolytes, such DNA proteins, well modeled spheres.