Dispersion in oscillatory electro-osmotic flow through a parallel-plate channel with kinetic sorptive exchange at walls

摘要: Dispersion in time-oscillatory electro-osmotic flows a slit micro-channel under the effect of kinetic sorptive exchange at walls is theoretically investigated using homogenization method. The two channel are considered to be made up different materials, and therefore have zeta potentials sorption coefficients. A general expression for Taylor dispersion coefficient as well various conditions derived analytically. found dependent on oscillation frequency, Debye parameter, species partition coefficient, reaction kinetics ratio wall potentials. results demonstrate that presence tends enhance when frequency low, but negligible high-frequency oscillatory flows. Moreover, it could significantly changed by adjusting relative low-frequency