| 新生态二氧化锰的性质及pH值影响除砷效果的研究 |
| Fresh MnO2: Properties and pH Effect on Arsenate Removal |
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| 摘要: |
| 关键词: 新生态MnO2 机理 表征 静电吸附 离子交换 |
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| Abstract: Fresh MnO2 was prepared by oxide reduction using KMnO4 and MnSO4. The structure and property of the products were characterized by TEM, SEM, XRD and BET, and the effect of pH value was studied on the removal of both As(Ⅴ) and As(Ⅲ). The results show that δ-MnO2 is spherical, its specific surface is 325 m2·g-1 with lots of hydroxyl on the surface. Adsorption of fresh MnO2 of As(Ⅲ) was a corporate action of both oxide reaction and electrostatic adsorption, but the adsorption of As(Ⅴ) was due to electrostatic and anion exchange adsorption. |
| Keywords: fresh MnO2 mechanism characterization electrostatic adsorption ion exchange |
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| 梁慧锋,马子川,刘占牛.新生态二氧化锰的性质及pH值影响除砷效果的研究[J].无机化学学报,2006,22(4):743-747. |
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