VLE data and modelling of aqueous N,N-diethylethanolamine (DEEA) solutions

Kinetics of CO2 absorption by aqueous N,N-diethylethanolamine solutions: Literature review, experimental results and modelling

“…When the kinetics is evaluated on activity basis, the effects of the solution non-idealities are taken into consideration. As discussed in Hartono et al (2013) and Monteiro et al (2013), the DEEA-water and DEEA-water-CO 2 systems are highly non-ideal, especially in the dilute DEEA region studied in this work (x DEEA o0.25). As shown in Knuutila et al (2010), the activity based pseudofirst order reaction constant is given by Eq.…”

“…The apparent varying order of reaction could be explained by the occurrence of possibly neglected reactions, such as the reaction between CO 2 and hydroxide. Using the concentration of hydroxide predicted by the model of Monteiro et al (2013), and the correlation of Pohorecki and Moniuk (1988) to calculate the kinetic constant of the reaction between CO 2 and hydroxide, we have concluded that this reaction would contribute to around 22% of the observed kinetic constant for the 0.2 M solution experiments. On the other hand, the contribution of the hydroxide reaction represents only 5% of the observed kinetic constant for the 1 M solution experiments.…”

“…Fig. 7 shows the original data and the reinterpreted data, using the model of Monteiro et al (2013) to calculate the free amine concentration as a function of loading, the physical properties described in Table 1, and the film model to describe the masstransfer. The re-interpreted results give a k 2 about 30% lower than the original, mostly due to the increased CO 2 solubility.…”

Density measurements and modelling of loaded and unloaded aqueous solutions of MDEA (N-methyldiethanolamine), DMEA (N,N-dimethylethanolamine), DEEA (diethylethanolamine) and MAPA (N-methyl-1,3-diaminopropane)

“…The barium chloride method was used to analyse the CO 2 content in solution (mole CO 2 /kg 93 solution), while the amine concentration was analysed using titration (Monteiro et al, 2013b). 94…”

Useful Mechanisms, Energy Efficiency Benefits, and Challenges of Emerging Innovative Advanced Solvent Based Capture Processes

“…MAPA consisting of one primary and one secondary amine groups formed the heavier CO 2 -rich phase [25,28]. DEEA being a tertiary alkanolamine formed the lighter CO 2 -lean phase.…”