We analyze adsorption-desorption kinetics at significantly higher temperatures than in the accompanying study (Schneider, H. M.; Granick, S.; Smith, S. preceding paper in this issue) so as to contrast enthalpic, detachment-limited desorption with the diffusion-limited regime. The experiments involve measurements of protiopolystyrene (PS) and deuterio-cis-polyisoprene (PI) adsorbed sequentially ...

The chemical release rates from a field-contaminated sediment (Lake Charles, LA) using Tenax desorption were studied. Two dichlorobenzenes (m-, p-), hexachlorobutadiene, and hexachlorobenzene were investigated. Contrary to reports that sorption rates are inversely related to K(OW), the slow desorption rates were found to be similar for the four compounds. The data were modeled by a two-compartm...

This work aims to investigate the competitive time-dependent desorption rate of heavy metals (lead, zinc, nickel) coexisting with phenanthrene from natural high buffering soil. Two non-ionic surfactants (Tween 80 and Brij 35) combined with disodium ethylene diamine tetraacetate salt (Na2-EDTA) were utilized as the reagents. The contaminants’ time-dependent desorption data was fitted with five k...

One of the main functions of the skin is to control the ingress and egress of water into and out of the body. The transport kinetics of water in the stratum corneum (SC), the dominant site of resistance in the skin, is normally described assuming a homogeneous membrane model. In the present work, the desorption of water from SC was studied and profiles obtained for amount desorbed versus time p...

Tetraethylenepentamine (TEPA)-based mesoporous MCM-41 is used as the adsorbent to determine the CO2 desorption kinetics of amine-modified materials after adsorption. The experimental data of CO2 desorption as a function of time are derived by zero-length column at different temperatures (35, 50, and 70 ◦C) and analyzed by Avrami’s fractional-order kinetic model. A new method is used to distingu...

The kinetics and thermodynamics for the reversible hydrogen desorption from NaH (and NaH derived from NaAlH4) are greatly improved by nanosizing and providing close contact to a porous carbon matrix.