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| Thermodynamics analysis of Mg2+-CO32--Gly--H2O system |
| Received:October 11, 2019 Revised:November 19, 2019 |
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| DOI： |
| KeyWord:MgCO3; thermodynamic; glycine |
| Author | Institution |
| DOU Aichun |
School of Material Science and Engineering,Jiangsu University |
| LIU Tong |
School of Material Science and Engineering,Jiangsu University |
| ZHANG Ye |
School of Material Science and Engineering,Jiangsu University |
| LIU Yunjian |
School of Material Science and Engineering,Jiangsu University |
| SU Mingru |
School of Material Science and Engineering,Jiangsu University |
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| Abstract: |
| The thermodynamic model of the dissolution of MgCO3 in glycinate aqueous solution (Gly--H2O system) was constructed according to the thermodynamic equilibrium equations in the system. Thermodynamic results of total concentration of Mg2+, free concentration of Mg2+, free concentration of Gly-, free concentration of CO32-, species distribution of Mg2+ and species distribution of Gly- were investigated respectively in the system at 298K. It is found that, MgCO3 can be dissolved in acidic Gly--H2O system for acid leaching by aminoacetic acid. MgCO3 cannot be dissolved in alkaline Gly--H2O system for complex-leaching by Gly-, because of the coordination ability of Gly- with Mg2+ is very weak. |
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