Investigation of the dynamics of adsorption in the region of low breakthrough concentrations

Abstract

1. The dynamics of the adsorption of benzene, n-decane, and tertiary butylbenzene vapors by layers of activated charcoals with various porous structures was studied in a broad range of relative breakthrough concentrations from the order of 10−5 up to one. A highly sensitive method with a flame-ionization detector was used to determine the concentrations. 2. With a general nonstationary process of adsorption dynamics, parallel transport of the front of low concentrations of the order of 10−5−10−2 is observed. Within this concentration interval, the elution curves are practically linear in semilogarithmic coordinates. 3. The degree of utilization of the static activity of the adsorbent layer depends on the properties of the substances being adsorbed, especially the critical dimensions of their molecules, and the microporous structure of the activated charcoal.