Removal of carbon dioxide and water using a solid amine adsorption bed for extended space flight

An enhanced solid amine based regenerative CO$\sb2$ and H$\sb2$O removal system is being used for the shuttle extended duration orbiter (EDO) missions. A computer model was developed to predict the adsorption of carbon dioxide and water onto a polyethyleneimine coated acrylic ester substrate (designated HSC+). Nineteen experimental adsorption breakthrough tests were conducted using a test bench at NASA/Johnson Space Center, Houston, Texas. CO$\sb2$ and H$\sb2$O adsorption equilibrium data was obtained. Analytical equations were developed to predict the overall water and carbon dioxide equilibrium on HSC+. This data was then used to develop a dynamic model which predicts the rate at which carbon dioxide and water are adsorbed. The model was based on a finite difference method to obtain a system of ordinary differential equations which were solved simultaneously using a fourth order Runga-Kutta method. Comparison of the breakthrough curves with the model for both CO$\sb2$ and H$\sb2$O show that the model predicts both CO$\sb2$ and H$\sb2$O adsorption rates at various conditions accurately.

Name thesis:degree_name

Master of Science

Level thesis:degree_level

Masters

Discipline thesis:degree_discipline

Engineering

Grantor

Rice University

Year dc:date.issued

1993

Author dc:creator

• Fuller, Deidra Korwald

• Chemical engineering

Statement dc:rights

• Copyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.

Language dc:language.iso

eng

Handle dc:identifier.uri

https://hdl.handle.net/1911/13726

OAI identifier oai:identifier

oai:repository.rice.edu:1911/13726