CO2 absorption into aqueous mixtures of diglycolamine® and methyldiethanolamine

CO2 Absorption Rate and Solubility in Monoethanolamine/Piperazine/Water

“…Figure 2 shows the overall flow diagram of the apparatus used in this study to obtain solubility and absorption rate data. The apparatus was originally built by Mshewa (19) and modifications were made by Pacheco et al (20,21). More details are given by Dang (8).…”

“…Periodically, liquid samples were withdrawn from a sample port close to the reactor outlet and analyzed for total carbon dioxide by acidic evolution into a CO 2 analyzer (6,13,19,20,21). Amine solution was also added in or withdrawn periodically from the sample port to keep the liquid level constant in the wetted wall column.…”

Reactive absorption of CO2 into enzyme accelerated solvents: From laboratory to pilot scale

“…Since the reaction takes place in the liquid phase, it is assumed that k G is not affected by enzyme addition as gas properties are not changed over experiments. This assumption is supported by literature correlations for k G that are based on Sherwood, Reynolds and Schmidt number, which mainly depend on gas properties [30,31]. Since carbonic anhydrase mass fraction of 0.2 wt.% is low, the influence on physical properties of the solvent, such as Henry coefficient He and diffusion coefficient of CO 2 in the solvent D CO 2 ;solvent , are assumed to be negligible as well.…”

Experimental Measurements and Thermodynamic Modelling of Carbon Dioxide Capture with use of 2-(Ethylamino) Ethanol

“…However, due to the limited number of data on EAE, it was decided to follow Austgen [32] concept, where the dielectric constants for pure diglycolamine (DGA) was set equal to dielectric constants for diethanolamine (DEA), due to missing data. Therefore coefficients for Henry's constants [23], the dielectric constants [32], equilibrium [14] and kinetic constants [16] were based on DGA [15]. Parameters for CO 2 and H 2 O were acquired from ASPEN Plus ® databanks (APV80.PURE27 and APV80.Binary).…”

“…However, there is still little experimental data on CO 2 capture with EAE at high loading rates (mol CO 2 mol EAE -1 > 1), and while the focus was rather on kinetics of reaction [8][9][10][11][12], no publication on thermodynamic modelling representing vapour-liquid equilibrium in the CO 2 -EAE -H 2 O system was found. Therefore in this research the Electrolyte Non Random Two-Liquid (eNRTL) model was applied for modelling the EAE's performance, since it has been widely applied for other amines like MEA [13], MEA and DEA [14], DGA [15], DGA and MDEA [16].…”