๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Adsorption rate coefficients for gases and vapors on activated carbons

โœ Scribed by Gerry O. Wood; J.F. Stampfer

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
624 KB
Volume
31
Category
Article
ISSN
0008-6223

No coin nor oath required. For personal study only.

โœฆ Synopsis

In order to estimate carbon bed breakthrough time (service life) for a given gas or vapor which is removed from flowing air by physical adsorption, both the adsorption capacity and adsorption rate need to be known. These parameters are available for only a small number of compounds at limited sets of conditions. For 27 hydrocarbons and fluorocarbons, 165 breakthrough curves were measured and analyzed to obtain adsorption rate coefficients. Reciprocals of rate coefficients at I and 10% of challenge breakthrough were linear functions of reciprocals of molar polarizations. Another database of breakthrough curves for I2 I compounds determined at the Lawrence Livermore National Laboratory in the 1970s was also analyzed. Effects of linear flow velocity on adsorption rate coefficients were determined. Combining these two databases of679 breakthrough curves for 147 compoundsgave correlationsofreciprocal adsorption rate coefficients as functions of molar polarization, linear airflow velocity, and breakthrough fraction. Only data for dry conditions and 2-cm deep beds have been considered so far.

๐Ÿ“œ SIMILAR VOLUMES

New adsorption-condensation theory for a
New adsorption-condensation theory for adsorption of vapors on porous activated carbons
โœ Shivaji Sircar ๐Ÿ“‚ Article ๐Ÿ“… 1987 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 872 KB

## A new analytical model to describe equilibrium adsorption of condensable vapors on porous adsorbents is developed. It accounts for the heterogeneous pore structure of the adsorbent, adsorption in the micropores by a pore filling mechanism and adsorption and condensation in the macropores. A gam

Prediction of adsorption rate constants
Prediction of adsorption rate constants of activated carbon for various vapors
โœ L.A. Jonas; Y.B. Tewari; E.B. Sansone ๐Ÿ“‚ Article ๐Ÿ“… 1979 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 478 KB

%n the past decade, a theoretical calcxilatim of the adsorption properties of activated carbon has successfully been used to predict the adsorption capacity for untested vapors after initial characterization of the carbon with a reference vapor. However, using this theoretical approach, it has not b

Adsorption of Water Vapor on Active Carb
Adsorption of Water Vapor on Active Carbon Preadsorbed with Methanol and Benzene
โœ Ryoichi Tsunoda ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 86 KB

powered refrigeration (12)(13)(14)(15)(16), owing to the Type I adsorp-Adsorption isotherms of water vapor on active carbon preadtion isotherm and the large latent heat of vaporization of sorbed with small amounts of methanol and benzene are measured methanol (872 kJ/dm 3 ( 14)). On the other hand w

The rates of adsorption and desorption o
The rates of adsorption and desorption of water vapor from air flows through activated carbons
โœ Victor R. Deitz ๐Ÿ“‚ Article ๐Ÿ“… 1991 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 469 KB

Abstra&--The rates of water vapor adsorption from humidifjed air flows have been determined from weight changes at 22 to 25ยฐC for a number of commercial adsorbent carbons and whetlerites. The rates were exponential with time at constant humidity from 40 to 95% relative humidity (RH). The rates of dr