Dynamic adsorption of water-soluble and insoluble vapours on activated carbon

Adsorption of butyl acetate in air over silver-loaded Y and ZSM-5 zeolites: Experimental and modelling studies

“…Chou and Chiou [11] reported that the capacity of a specified adsorbent to adsorb a particular VOC depends mainly on vapour pressure of the VOC, moisture and temperature of the VOC-laden gas stream. Biron and Evans [12] studied the effect of water vapour on the organic mixture adsorption of cyclohexane, acetonitrile, 2-butanone, iso-propanol, n-heptane, 1-hexanol, diacetone and methylphosphonate by activated carbon. It was found that the adsorption capacities for the organic mixture decreased with increasing relative humidity.…”

A comparative investigation on absorption performances of three expanded graphite-based complex materials for toluene

“…All these polarized groups had an intensive affinity to water vapors in streams via hydrogen bounding. Therefore humidity of streams always influenced the sorption capacities of hydrophobic VOCs and the higher humidity would strengthen the negative effects of water [38,39]. But from above discussion the surface of the complex materials were hydrophobic and nonporous, water vapor in streams was hardly absorbed via hydrogen bounding.…”

Influence of Organics on the Structure of Water Adsorbed on Activated Carbons

“…[6] and [7]. It should be noted that the amounts of water desorbed from PS-i samples in the TG measurements (Fig.…”

“…In all of these cases, the adsorption of water in the presence of preadsorbed organics or from a mixture of water and organics is substantially more complicated for interpretation in comparison to adsorption of simple individual adsorbates (6-13). It was found that noticeable changes in the adsorptive capacity of carbons, such as reduction of the breakthrough time for organics (7,9,11), occur when water is present in the system. This can be explained by the adsorption of small water clusters in micropores and partial blocking of mesopores and transport pores by nanoscaled water droplets (6).…”