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Viscosity measurement of MEA and water mixtures

https://doi.org/10.1155/2020/7051368

“Viscosity measurements of MEA and water mixtures are equally important as density measurements in the postcombustion absorption process. Viscosity has a high impact on the mass transfer coefficient of gas into a liquid in a packed bed absorber [32]. The viscosity of MEA varies with the amount of water and CO2 present in the solution and decreases as the solution temperature increases. The available literature for the viscosity measurements of pure MEA is shown in Table 4 [2913171923242833]. Previous studies have attempted to cover the viscosity data in the range of 0–100 mass% MEA [141733]. Measurements at a temperature above 373.15 K are reported in [3336]. For CO2-loaded aqueous MEA, most of the reported studies presented the viscosity of 30 mass% MEA solutions within the CO2-loading range of 0–0.5 mol CO2/mol MEA. Idris et al. [34] discussed the viscosity measurements at higher (>50 mass%) MEA concentrations. The study performed by Arachchige et al. [37] presented data at higher temperatures (>373.15 K). Tables 5 and 6 list studies performed on viscosity measurements of aqueous MEA and CO2-loaded aqueous MEA, respectively. The evaporation and desorption of MEA and CO2 from aqueous MEA and CO2-loaded aqueous MEA solutions cause errors in the viscosity measurements. Idris et al. [34] adopted a method to suppress the CO2-loaded aqueous MEA mixture using N2 gas with 4 bar pressure to avoid the escape of CO2 from the system. Further, Idris et al. [34] claim that the applied pressure would not influence the outcome of the experiments.”

Table 4 Sources of reported viscosity measurements of pure MEA.


Source T (K) No of points Method
Low High

DiGuilio et al. [9] 303.6 423.7 8 Cannon-Ubbelohde capillary viscometer
Li and Lie [13] 303.15 353.15 6 Cannon-Fenske routine viscometer
Lee and Lin [14] 303.15 323.15 3 Haake falling-ball viscometer
Song et al. [15] 303.15 343.15 5 Ubbelohde viscometer
Kapadi et al. [16] 303.15 318.15 4 Ubbelohde viscometer
Islam et al. [17] 293.15 323.15 6 U-tube Ostwald viscometer
Geng et al. [19] 288.15 323.15 8 Ubbelohde viscometer
Amundsen et al. [2] 298.15 353.15 5 ZIDIN viscometer
Abuin et al. [23] 298.15 1 Ubbelohde viscometer
Arachchige et al. [33] 293.15 423.15 15 Anton Paar MCR 101 with a double gap measuring cell
Xu et al. [24] 293.15 333.15 5 Anton PaarAMVn
Ma et al. [27] 293.15 333.15 5 LUNDA iVisc capillary viscometer
Idris et al. [34] 298.15 373.15 16 Anton Paar MCR 101 with a double gap measuring cell
Maham et al. [35] 298.15 353.15 5 Ubbelohde viscometer/capillary viscometer

Table 5 Sources of reported viscosity measurements of aqueous MEA.


Source Concentration: () MEA T (K) No of points Method
Low High Low High

Weiland et al. [26] 0.0317 0.1643 298.15 4 Cannon-Fenske viscometer
Amundsen et al. [2] 0.0687 0.7264 298.15 353.15 30 ZIDIN viscometer
Arachchige et al. [33] 0.0317 0.7264 293.15 353.15 72 Anton Paar MCR 101 with a double gap measuring cell
Hartono et al. [1] 0.0191 0.1122 293.15 353.15 26 Anton Paar MCR 100 with a double gap measuring cell
Arachchige et al. [38] 0.0317 0.7264 363.15 423.15 63 Anton Paar MCR 101 with a double gap measuring cell
Idris et al. [34] 0.2278 0.7264 298.15 373.15 128 Anton Paar MCR 101 with a double gap measuring cell
Lee and Lin [14] 0.1000 0.9000 303.15 323.15 27 Haake falling-ball viscometer
Kapadi et al. [16] 0.1122 0.8486 303.15 318.15 32 Ubbelohde viscometer
Islam et al. [17] 0.0322 0.7296 303.15 323.15 45 U-tube Ostwald viscometer
Ma et al. [27] 0.1000 0.8995 293.15 333.15 45 LUNDA iVisc capillary viscometer
Maham et al. [35] 0.0313 0.8446 298.15 353.15 60 Ubbelohde viscometer/capillary viscometer
Li and Lie [13] 0.0687 0.1122 303.15 353.15 6 Cannon-Fenske routine viscometer
Zhang et al. [29] 0.1122 298.15 353.15 7 U-tube capillary viscometer
Mandal et al. [28] 0.1122 298.15 323.15 7 Ostwald viscometer

Table 6 Sources of reported viscosity measurements of CO2-loaded aqueous MEA.


Source Concentration: mass% MEA CO2 loading:  (mol CO2/mol MEA) T (K) No of points Method
Low High Low High Low High

Weiland et al. [26] 10 40 0.05 0.5 298.15 20 Cannon-Fenske viscometer
Amundsen et al. [2] 20 40 0.1 0.5 298.15 353.15 75 ZIDIN viscometer
Fu et al. [39] 20 40 0.1 0.5 298.15 15 NDJ-1 rotational viscometer
Hartono et al. [1] 6.2 30 0.11 0.5 293.15 353.15 100 Anton Paar MCR 100 with a double gap measuring cell
Idris et al. [34] 50 80 0.08 0.52 298.15 373.15 320 Anton Paar MCR 101 with a double gap measuring cell
Arachchige et al. [37] 10 50 0.1 0.5 293.15 423.15 375 Anton Paar MCR 101 with a double gap measuring cell
Zhang et al. [29] 30 0.14 0.49 298.15 353.15 23 U-tube capillary viscometer

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