Abstract
1. An expression was obtained for the distribution of the concentrations along the length of the layer of the adsorbent grains for short times, considering the effect of longitudinal diffusion. 2. A method was proposed for determining the coefficient of external mass exchange according to the known coefficient of longitudinal diffusion and the known distribution of breakthrough concentrations along the layer. 3. A formula describing the initial portion of the effluent curves (region of low concentrations) in the system of a stationary front was found. 4. In accord with the experimental data, the region of low concentrations of the effluent curve can be represented in the coordinates of the logarithm of the relative concentration versus the time in the form of a straight line. 5. The approximate equations of internal diffusion kinetics are discussed.
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