TY - JOUR
T1 - Physical properties of aqueous blends of sodium glycinate (SG) and piperazine (PZ) as a solvent for CO2 capture
AU - Shaikh, M. S.
AU - Shariff, A. M.
AU - Bustam, M. A.
AU - Murshid, Ghulam
PY - 2013/3/14
Y1 - 2013/3/14
N2 - The physical properties including the density, viscosity, and refractive index of aqueous blends of sodium glycinate (SG) and piperazine (PZ) as a solvent for CO2 absorption were measured under the wide temperature range (298.15 to 343.15) K. Different concentrations (mole fraction) of sodium glycinate and piperazine (SG + PZ) blends were (0.0348/0.0089, 0.0263/0.0177, 0.0177/0.0263, and 0.0089/0.0348), respectively. From the observations, it was found that the densities of the aqueous blends decrease when the piperazine concentration in the blend increases. It was noticed that the viscosity of the blend decreases initially by increasing the concentration of piperazine from 0.0089 to 0.0177 mole fraction; however, on further increasing the piperazine and decreasing the sodium glycinate concentration in the blend, the viscosity tends to increase. The refractive indices of the aqueous blend of sodium glycinate and piperazine decrease with increasing the concentration of piperazine in the blend. The density, viscosity, and refractive index of an aqueous blend of (SG + PZ) decreases with increasing temperature. The measured values of density, viscosity, and refractive index were correlated as a function of temperature by using standard equations of the least-squares method. All of the correlation parameters were reported together with the standard deviation.
AB - The physical properties including the density, viscosity, and refractive index of aqueous blends of sodium glycinate (SG) and piperazine (PZ) as a solvent for CO2 absorption were measured under the wide temperature range (298.15 to 343.15) K. Different concentrations (mole fraction) of sodium glycinate and piperazine (SG + PZ) blends were (0.0348/0.0089, 0.0263/0.0177, 0.0177/0.0263, and 0.0089/0.0348), respectively. From the observations, it was found that the densities of the aqueous blends decrease when the piperazine concentration in the blend increases. It was noticed that the viscosity of the blend decreases initially by increasing the concentration of piperazine from 0.0089 to 0.0177 mole fraction; however, on further increasing the piperazine and decreasing the sodium glycinate concentration in the blend, the viscosity tends to increase. The refractive indices of the aqueous blend of sodium glycinate and piperazine decrease with increasing the concentration of piperazine in the blend. The density, viscosity, and refractive index of an aqueous blend of (SG + PZ) decreases with increasing temperature. The measured values of density, viscosity, and refractive index were correlated as a function of temperature by using standard equations of the least-squares method. All of the correlation parameters were reported together with the standard deviation.
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U2 - 10.1021/je301091z
DO - 10.1021/je301091z
M3 - Article
AN - SCOPUS:84875178128
SN - 0021-9568
VL - 58
SP - 634
EP - 638
JO - Journal of Chemical and Engineering Data
JF - Journal of Chemical and Engineering Data
IS - 3
ER -