Effect of molecular structure on excess molar enthalpy of amine-based carbon dioxide absorbent and water

2020 ◽  
Vol 685 ◽  
pp. 178514
Author(s):  
Ruilei Zhang ◽  
Jian Chen ◽  
Guirong Cao ◽  
Hongbiao Gu ◽  
Ruijie Xiao ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Carbon Dioxide ◽  
Molar Enthalpy ◽  
Excess Molar Enthalpy ◽  
Carbon Dioxide Absorbent

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

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5052
Author(s):  
Bartłomiej Rogalewicz ◽  
Agnieszka Czylkowska ◽  
Piotr Anielak ◽  
Paweł Samulkiewicz
Keyword(s):  
Carbon Dioxide ◽  
Thermal Properties ◽  
Powder Diffraction ◽  
Soda Lime ◽  
Closed Circuit ◽  
Carbon Dioxide Absorption ◽  
X Ray ◽  
Kinetics Of ◽  
Carbon Dioxide Absorbent

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.

INFLUENCE OF CARBON DIOXIDE ABSORBENT AND PERCENTAGE ATMOSPHERIC CARBON DIOXIDE ON OXYGEN UPTAKE BY BOAR SPERMATOZOA

1972 ◽  
Vol 52 (1) ◽  
pp. 57-63
Author(s):  
L. M. SANFORD ◽  
G. J. KING
Keyword(s):  
Carbon Dioxide ◽  
Oxygen Uptake ◽  
Incubation Period ◽  
Potassium Hydroxide ◽  
Atmospheric Carbon Dioxide ◽  
Initial Value ◽  
Atmospheric Carbon ◽  
Cell Motion ◽  
Boar Spermatozoa ◽  
Carbon Dioxide Absorbent

Boar spermatozoa were diluted in Ringer’s fructose or sulfate buffer and incubated aerobically for 4 hr at 37 C (a) in the presence of potassium hydroxide (KOH), hyamine hydroxide, or diethanolamine (DEA) absorbents, and (b) in 1, 2, or 3% atmospheric levels of carbon dioxide. Oxygen uptake by boar spermatozoa was enhanced by the presence of DEA compared with KOH and hyamine hydroxide. Incubation with DEA resulted in increased spermatozoan livability, more desirable cell motion, and smaller increases in buffer pH. Oxygen uptake by boar spermatozoa was optimum with 1 or 2% carbon dioxide, depending upon which buffer cells were diluted in. Levels of 2 and 3% carbon dioxide maintained oxygen uptake and livability of boar spermatozoa during later stages of the incubation period equally as well as 1% carbon dioxide. As the level of atmospheric carbon dioxide increased, buffer pH remained closer to the initial value.

Sign in / Sign up

Export Citation Format

Share Document