| Fe-Si-B非晶合金粉末对水溶液中Ni(II)的去除机理 |
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| 引用本文： | 张香云,张咪,李金祺,杜进英,袁子洲.Fe-Si-B非晶合金粉末对水溶液中Ni(II)的去除机理[J].稀有金属材料与工程,2022,51(1):60-65. |
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| 作者姓名： | 张香云 张咪 李金祺 杜进英 袁子洲 |
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| 作者单位： | 兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室，甘肃 兰州 730050;兰州理工大学 温州泵阀工程研究院，浙江 温州 325105,兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室，甘肃 兰州 730050,兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室，甘肃 兰州 730050,兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室，甘肃 兰州 730050,兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室，甘肃 兰州 730050 |
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| 基金项目： | 国家自然科学基金 [ No. 51661015 和 No. 52061024]; 浙江省自然科学基金 [No. LQ20E010002] |
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| 摘 要： | 对比研究了商业Fe-Si-B非晶（Fe-Si-BMG）粉末和目前广泛应用的零价铁粉（ZVI，Fe0）对水溶液中重金属离子Ni(II)的去除性能。动力学分析显示Fe-Si-BMG粉末对Ni(II)的去除效率约为Fe0粉的38倍。通过对2种粉末的表面形貌观察发现，与Fe0粉相比， Fe-Si-BMG粉末的表面产物层具有均匀、疏松的絮状物，更容易在搅拌过程中脱落。通过对Fe-Si-BMG粉末反应前后的表面化学成分分析发现：Fe-Si-BMG粉末通过吸附、还原、共沉淀作用去除水溶液中Ni(II)，而Fe0粉主要通过吸附和共沉淀去除水溶液中的Ni(II)。
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| 关 键 词： | 非晶合金 反应机制 激活能 重金属 |
| 收稿时间： | 2020/10/21 0:00:00 |
| 修稿时间： | 2020/11/18 0:00:00 |
Removal Mechanism of Ni(II) from Aqueous Solution by Fe-Si-B Metallic Glass Powder |
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| Zhang Xiangyun,Zhang Mi,Li Jinqi,Du Jinying and Yuan Zizhou.Removal Mechanism of Ni(II) from Aqueous Solution by Fe-Si-B Metallic Glass Powder[J].Rare Metal Materials and Engineering,2022,51(1):60-65. |
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| Authors: | Zhang Xiangyun Zhang Mi Li Jinqi Du Jinying and Yuan Zizhou |
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| Affiliation: | State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China;Wenzhou Engineering Institute of Pump & Valve, Lanzhou University of Technology, Wenzhou 325105, China,State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China,State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China,State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China,State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China |
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| Abstract: | The commercial Fe-Si-B metallic glass (Fe-Si-BMG) powder and the widely used powder of zero valent iron (ZVI), namely Fe0, were used to eliminate the Ni(II) from aqueous solution. Kinetic analysis results indicate that the removal efficiency of Fe-Si-BMG powder in removing Ni(II) is about 38 times faster than that of the Fe0 powder. Morphology observation shows that the product layers on the surface of Fe-Si-BMG powder are composed of homogeneous and loose whiskers, which peel off more easily from the surface during the agitation process, compared with those of Fe0 powder. Chemical composition analysis about the surface of Fe-Si-BMG powders before and after reaction shows that Fe-Si-BMG powder can eliminate the Ni(II) through surface adsorption, reduction, and coprecipitation mechanisms; while Fe0 powder removes the Ni(II) in solution mainly through surface adsorption and coprecipitation mechanisms. |
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| Keywords: | metallic glass reaction mechanism activation energy heavy metal |
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