Investigation and Possibilities of Reuse of Carbon Dioxide Absorbent Used in Anesthesiology

Abstract

Absorbents used in closed and semi-closed circuit environments play a key role in preventing carbon dioxide poisoning. Here we present an analysis of one of the most common carbon dioxide absorbents—soda lime. In the first step, we analyzed the composition of fresh and used samples. For this purpose, volumetric and photometric analyses were introduced. Thermal properties and decomposition patterns were also studied using thermogravimetric and X-ray powder diffraction (PXRD) analyses. We also investigated the kinetics of carbon dioxide absorption under conditions imitating a closed-circuit environment.

Special Issue: Thermal Analysis of Materials

“…In several papers, well-established techniques of differential thermal analysis, thermogravimetry, and gas adsorption calorimetry are applied to research related to environmental problems, such as capturing CO 2 from industrial processes by calcium looping [ 1 ]; the utilization of copper tailing wastes as an addition to Portland cement [ 2 ]; the reuse of soda lime CO 2 absorbent in spacecrafts, submarines, anesthetics, and diving apparatuses [ 3 ]; and the passive fire protection offered by inorganic material-based insulation [ 4 ].…”