PDF Publication Title:
Text from PDF Page: 059
3.2.3 Dual Site Langmuir Model An extension of Langmuir is the “dual-site Langmuir (DSL)” model, which accounts for an additional adsorption site not present in the Langmuir model.23 With two adsorption “sites”, the DSL model has greater mathematical flexibility and can represent almost any pure component data. It represents zeolitic systems very well because the two sites capture the essence of the two types of interactions with the surface. One site represents the electrostatic interaction with exchangeable cations, while the other site represents the much smaller difference in the attraction of nitrogen and oxygen molecules to the zeolite structure due to dispersion forces. In essence, it is rationalized there is one site representing the electrostatic and induced electrostatic interactions with the exchangeable cations, and another site representing dispersion interactions with the zeolite structure. The DSL model for a pure component gas is expressed as: where and b are the saturation capacity and equilibrium constant respectively for the exchangeable ion sites while and d are the same parameters due to the dispersion interaction effect. It is assumed b is greater than d because exchangeable ions have higher affinity for adsorbate molecules than the neutral zeolite structure. If the saturation capacity of each gas molecule is assumed equal for each site, the DSL multicomponent model is represented as: 40PDF Image | LIMITS OF SMALL SCALE PRESSURE SWING ADSORPTION
PDF Search Title:
LIMITS OF SMALL SCALE PRESSURE SWING ADSORPTIONOriginal File Name Searched:
Limits of Small Scale PSA_Aaron Moran.pdfDIY PDF Search: Google It | Yahoo | Bing
CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
Heat Pumps CO2 ORC Heat Pump System Platform More Info
| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |