Solubilities of Carbon Dioxide and Densities of Aqueous Sodium Glycinate Solutions before and after CO2 Absorption
The densities of aqueous solutions of sodium glycinate (SG) were measured for a range of concentrations [(1, 5, 10, 15, 20, and 30) % wt] and at a temperature range (298.15 to 353.15) K. The solubility of CO2 in aqueous solution of sodium glycinate was measured for the same concentration range and...
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| Main Authors: | , , , |
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| Format: | Article |
| Published: |
Americal Chemical society
2009
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| Subjects: | |
| Online Access: | http://eprints.utp.edu.my/814/1/je800672r%3FcookieSet%3D1 http://eprints.utp.edu.my/814/ |
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| Institution: | Universiti Teknologi Petronas |
| Summary: | The densities of aqueous solutions of sodium glycinate (SG) were measured for a range of concentrations
[(1, 5, 10, 15, 20, and 30) % wt] and at a temperature range (298.15 to 353.15) K. The solubility of CO2
in aqueous solution of sodium glycinate was measured for the same concentration range and at two
temperatures (298.15 and 313.15) K, over CO2 partial pressure ranging from (100 to 2500) kPa. The densities
of aqueous solutions of sodium glycinate after the absorption were also measured at the same conditions of
the solubility measurements. It was found that density of aqueous solutions of sodium glycinate increases
as the molar concentration increases and decreases with an increase in temperature. The solubilities of CO2
are reported as loading capacity (mol CO2/mol SG) as a function of partial pressure of CO2 at the
corresponding temperature. It was found that CO2 solubility increases with increase in CO2 partial pressure.
It was also found that solubility of sodium glycinate solution decreases with increasing sodium glycinate
concentration and temperature. The densities of aqueous sodium glycinate after absorption gave a higher
value than that before absorption and increase with increasing pressure |
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