绿色水处理剂高铁酸钾制备研究进展

doi:10.11894/iwt.2020-0036

摘要/Abstract

摘要：

高铁酸钾作为一种多功能绿色化学试剂，具有高氧化还原电位、自身及还原产物无毒的优点，在水处理领域有巨大的应用前景。主要介绍了3种高铁酸钾制备方法，包括熔融法、次氯酸盐氧化法和电解法，其中电解法又包括间接电解法和直接电解法，同时分析和比较了各种制备方法的优缺点，得出直接电解法是比较理想的制备方法，并对未来高铁酸钾制备的研究方向进行了展望。

关键词: 高铁酸钾, 熔融法, 次氯酸盐氧化法, 电解法

Abstract:

As a multifunctional green chemical reagent, potassium ferrate has high redox potential, non-toxicity of itself and its reduction products, enabling it to have great application prospects in the field of water treatment. This paper mainly introduces three preparation methods of potassium ferrate, including melting method, hypochlorite oxidation method and electrolysis method, among which electrolysis method includes indirect electrolysis method and direct electrolysis method. At the same time, the advantages and disadvantages of various preparation methods have been analyzed and compared, which concludes that the direct electrolytic method is the optimum preparation method, and the future research direction of the preparation of potassium ferrate are looked ahead.

Key words: potassium ferrate, melting method, hypochlorite oxidation method, electrolysis method

中图分类号:

X703

张运波,王一凡,王洪波. 绿色水处理剂高铁酸钾制备研究进展[J]. 工业水处理, 2020, 40(11): 10-14.

Yunbo Zhang,Yifan Wang,Hongbo Wang. Research progress in preparation of green water treatment agent potassium ferrate[J]. Industrial Water Treatment, 2020, 40(11): 10-14.

https://www.iwt.cn/CN/Y2020/V40/I11/10

图/表 2

参考文献 46

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电流效率	实验条件
23%	阳极：纯铁（99.5%Fe），c_NaOH=14 mol/L，直流电流密度=16 mA/cm²，T=40 ℃，t=3 h^〔28〕
33%	阳极：纯铁（99.5%Fe），c_NaOH=14 mol/L，直流电流密度=16 mA/cm²，T=40 ℃，t=3 h，交流频率=50 Hz，交流振幅=88 mA/cm²^〔28〕
68.5%	阳极：灰口铸铁，c_NaOH=14 mol/L，直流电流密度=4.54 mA/cm²，T=20 ℃，t=1 h^〔43〕
73.2%	阳极：镀锌铁丝网，c_KOH=14.5 mol/L，直流电流密度=1 mA/cm²，T=65 ℃，t=8.75 h^〔38〕
71%	阳极：镀锌铁丝网，c_KOH=14 mol/L，直流电流密度=2.74 mA/cm²，T=65 ℃，t=2 h，超声波功率=14.6 W^〔39〕
77.2%	阳极：镀锌铁丝网，c_KOH=14 mol/L，直流电流密度=0.8 mA/cm²，T=65 ℃，t=6.85 h，超声波功率=14.6 W^〔39〕
63.9%	阳极：镀锌铁丝网，c_KOH=14 mol/L，直流电流密度=2.74 mA/cm²，T=70 ℃，t=2 h^〔41〕
64.9%	阳极：镀锌铁丝网，c_OH^-=14 mol/L（9 mol/L KOH+5 mol/L NaOH），直流电流密度=2.74 mA/cm²，T=60 ℃，t=2 h^〔41〕
3.5%	阳极：灰铁皮（2.7%~4.0%C），c_NaOH=6.2 mol/L，直流电流密度=31.2 mA/cm²，T=35 ℃，t=5 h^〔44〕
73.6%	阳极：镀锌铁丝网，c_KOH=16 mol/L，直流电流密度=50 A/m2，T=65 ℃，t=6 h^〔45〕
32%	阳极：海绵铁，c_NaOH=10 mol/L，直流电流密度=0.054 mA/cm²，T=35 ℃，t=3 h^〔46〕

电流效率	实验条件
23%	阳极：纯铁（99.5%Fe），c_NaOH=14 mol/L，直流电流密度=16 mA/cm²，T=40 ℃，t=3 h^〔28〕
33%	阳极：纯铁（99.5%Fe），c_NaOH=14 mol/L，直流电流密度=16 mA/cm²，T=40 ℃，t=3 h，交流频率=50 Hz，交流振幅=88 mA/cm²^〔28〕
68.5%	阳极：灰口铸铁，c_NaOH=14 mol/L，直流电流密度=4.54 mA/cm²，T=20 ℃，t=1 h^〔43〕
73.2%	阳极：镀锌铁丝网，c_KOH=14.5 mol/L，直流电流密度=1 mA/cm²，T=65 ℃，t=8.75 h^〔38〕
71%	阳极：镀锌铁丝网，c_KOH=14 mol/L，直流电流密度=2.74 mA/cm²，T=65 ℃，t=2 h，超声波功率=14.6 W^〔39〕
77.2%	阳极：镀锌铁丝网，c_KOH=14 mol/L，直流电流密度=0.8 mA/cm²，T=65 ℃，t=6.85 h，超声波功率=14.6 W^〔39〕
63.9%	阳极：镀锌铁丝网，c_KOH=14 mol/L，直流电流密度=2.74 mA/cm²，T=70 ℃，t=2 h^〔41〕
64.9%	阳极：镀锌铁丝网，c_OH^-=14 mol/L（9 mol/L KOH+5 mol/L NaOH），直流电流密度=2.74 mA/cm²，T=60 ℃，t=2 h^〔41〕
3.5%	阳极：灰铁皮（2.7%~4.0%C），c_NaOH=6.2 mol/L，直流电流密度=31.2 mA/cm²，T=35 ℃，t=5 h^〔44〕
73.6%	阳极：镀锌铁丝网，c_KOH=16 mol/L，直流电流密度=50 A/m2，T=65 ℃，t=6 h^〔45〕
32%	阳极：海绵铁，c_NaOH=10 mol/L，直流电流密度=0.054 mA/cm²，T=35 ℃，t=3 h^〔46〕

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