Viscosity measurement of unloaded and CO2-loaded aqueous monoethanolamine at higher concentrations

Physical Properties of MEA + Water + CO2 Mixtures in Postcombustion CO2 Capture: A Review of Correlations and Experimental Studies

“…For CO 2 -loaded aqueous MEA, most of the reported studies presented the viscosity of 30 mass% MEA solutions within the CO 2loading range of 0-0.5 mol CO 2 /mol MEA. Idris et al [34] discussed the viscosity measurements at higher (>50 mass%) MEA concentrations. e study performed by Arachchige et al [37] presented data at higher temperatures (>373.15 K).…”

“…e evaporation and desorption of MEA and CO 2 from aqueous MEA and CO 2 -loaded aqueous MEA solutions cause errors in the viscosity measurements. Idris et al [34] adopted a method to suppress the CO 2 -loaded aqueous MEA mixture using N 2 gas with 4 bar pressure to avoid the escape of CO 2 from the system. Further, Idris et al [34] claim that the applied pressure would not influence the outcome of the experiments.…”

“…e polynomial coefficients were found through a regression analysis at different temperatures. A Redlich-Kister type correlation as illustrated in equation (34) was proposed by Islam et al [17] to determine Δη (excess viscosity), and the parameters were found for different temperatures through a regression. A similar work was performed by Hartono et al [1].…”

“…e main advantage of Hartono's aqueous MEA viscosity correlation is that it comprises the temperature dependence of viscosity that is not considered in Islam's correlation. Idris et al [34] discussed the applicability of correlations based on the work by Heric-Brewer [69], Jouyban-Acree [70], Herráez et al [71], and Redlich-Kister [57] as given in equations (36)- (39) respectively. e fitting parameters are in the form of a second-order polynomial of temperature to correlate temperature dependency of the viscosity as given in equation (40).…”

One-dimensional model of turbulent flow of non-Newtonian drilling mud in non-prismatic channels

“…The combined uncertainty of viscosity is 0.015 mPa s, which is calculated based on the quantifying uncertainty in analytical measurement (QUAM) method (Ellison et al 2000). An external Anton Paar Viscotherm VT 2 cooling system has a standard temperature uncertainty of 0.02 K (Idris et al 2017). For DMA 4500, the temperature accuracy is ± 0.03 K. The uncertainty of density is determined as 0.34 kg/m 3 (Han et al 2012).…”