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| Speciation State of Vanadium and Aluminum in Oxalic Acid Leachate of Vanadium-Bearing Shale |
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Received:July 01, 2019
Revised:July 03, 2019
Accepted:July 08, 2019
Published Online:November 18, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.12.001 |
| KeyWord:vanadium-bearing shale; oxalic acid; vanadium; aluminum; speciation state |
| Author | Institution |
| liuzishuai |
武汉科技大学资源与环境工程学院 |
| Zhang Yimin |
武汉科技大学资源与环境工程学院 |
| Huang Jing |
武汉科技大学资源与环境工程学院 |
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| Abstract: |
| Taking oxalic acid leachate of vanadium-bearing shale as the object, speciation state of vanadium and aluminum in oxalic acid leachate of vanadium-bearing shale were studied. Speciation state of vanadium and aluminum in oxalic acid system were preliminarily determined through Medusa software simulation. Then, the loaded organic phase of vanadium and aluminum were studied by infrared spectroscopy and mass spectrometry. The results show that extractable complex of vanadium-loaded organic phase is [(R4N)2?VO(C2O4)2], and that of aluminum-loaded organic phase is [(R4N)?Al(C2O4)2] and [(R4N)3?Al(C2O4)3], respectively. Therefore, speciation state of vanadium and impurity aluminum in oxalic acid leachate can be determined, vanadium exists in form of VO(C2O4)22- complex anion, while the aluminum exists simultaneously as Al(C2O4)2- and Al(C2O4)33-. |
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