Fe-Si-B非晶合金粉末对水溶液中Ni(Ⅱ)的去除机理(英文)  

Removal Mechanism of Ni(Ⅱ)from Aqueous Solution by Fe-Si-B Metallic Glass Powder

作　　者：张香云[1,2] 张咪 李金祺 杜进英 袁子洲 Zhang Xiangyun;Zhang Mi;Li Jinqi;Du Jinying;Yuan Zizhou(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)

机构地区：[1]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 [2]兰州理工大学温州泵阀工程研究院,浙江温州325105

出　　处：《稀有金属材料与工程》2022年第1期60-65,共6页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China (51661015, 52061024);Zhejiang Provincial Natural Science Foundation (LQ20E010002)。

摘　　要：对比研究了商业Fe-Si-B非晶(Fe-Si-B^(MG))粉末和目前广泛应用的零价铁粉(ZVI,F;0)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-B^(MG)粉末对Ni(Ⅱ)的去除效率约为Fe;粉的38倍。通过对2种粉末的表面形貌观察发现,与Fe0^(0)粉相比,Fe-Si-B^(MG)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-B^(MG)粉末反应前后的表面化学成分分析发现:Fe-Si-B^(MG)粉末通过吸附、还原、共沉淀作用去除水溶液中Ni(Ⅱ),而Fe0^(0)粉主要通过吸附和共沉淀去除水溶液中的Ni(Ⅱ)。The commercial Fe-Si-B metallic glass(Fe-Si-B^(MG))powder and the widely used powder of zero valent iron(ZVI),namely Fe0^(0),were used to eliminate the Ni(Ⅱ)from aqueous solution.Kinetic analysis results indicate that the removal efficiency of Fe-Si-B^(MG) powder in removing Ni(Ⅱ)is about 38 times faster than that of the Fe0^(0) powder.Morphology observation shows that the product layers on the surface of Fe-Si-B^(MG) 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^(0) powder.Chemical composition analysis about the surface of Fe-Si-B^(MG) powders before and after reaction shows that Fe-Si-B^(MG) powder can eliminate the Ni(Ⅱ)through surface adsorption,reduction,and coprecipitation mechanisms;while Fe0^(0) powder removes the Ni(Ⅱ)in solution mainly through surface adsorption and coprecipitation mechanisms.

关 键 词：非晶合金 反应机制 激活能 重金属 

分 类 号：TG139.8[一般工业技术—材料科学与工程]