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| Thermodynamics Analysis of Ca2 -CO32--Glu2--H2O System |
| Received:January 20, 2017 Revised:January 24, 2017 |
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| DOI：doi：10.3969/j.issn.1007-7545.2017.06.001 |
| KeyWord:CaCO3; thermodynamic; glutamic acid |
| Author | Institution |
| DOU Aichun |
江苏大学 材料科学与工程学院 |
| WANG Shuo |
江苏大学 材料科学与工程学院 |
| YANG Tianzu |
中南大学 冶金与环境学院 |
| LIU Yunjian |
江苏大学 材料科学与工程学院 |
| SU Mingru |
江苏大学 材料科学与工程学院 |
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| Abstract: |
| Thermodynamic model of dissolution of CaCO3 in glutamate aqueous solution (Glu2--H2O system) was constructed according to thermodynamic equilibrium equations in the system. Thermodynamic results of total concentration of Ca2 , concentration of free Ca2 , concentration of free Glu2-, concentration of free CO32-, species distribution of Ca2 , and species distribution of Glu2- were investigated respectively in the system at 298 K. The results show that CaCO3 can be dissolved in acidic Glu2--H2O system for acid leaching by glutamic acid. CaCO3 cannot be dissolved in alkaline Glu2--H2O system for complex-leaching by Glu2- due to weak coordination ability of Glu2- with Ca2 . |
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