Charcoal Sorption Studies: Iii. The Adsorption of Ethylene and Perfluoroethylene by an Activated Charcoal

Abstract

The adsorption of ethylene and perfluoroethylene by an activated charcoal has been measured over a range of temperatures. Integral and differential heats have been calculated and compared for the two gases. T h e heats of adsorption of perfluoroethylene are consistently higher than those of ethylene, but only by an amount t o be expected from the difference in molecular weights. The absolute entropy of adsorbed ethylene has been calculated and found t o be in agreement with a model in which the adsorbed moleci~les are mobile and possess a t least two degrees of rotational freedom.

Ethylene: potential key for biochar amendment impacts

“…In contrast, soils amended with activated charcoal produced no detectable ethylene, regardless of water content. The lack of ethylene production from the activated charcoal agrees with previous observations of ethylene sorption by activated charcoals (McDermot et al 1995).…”