水滑石基固体双氧水处理水体中金属络合染料研究
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摘要
采用改良的低温结晶法制备基于碳酸根插层的MgAl-LDH的固体双氧水(LDHPC),对其进行表征并作为氧化剂构建类Fenton体系降解中性蓝(BNL)。结果表明,所得LDHPC纯度较高,其中MgAl-LDH与双氧水通过氢键结合,H_2O_2质量分数为13.55%。以LDHPC为氧化剂的非均相类Fenton体系适用pH范围为2～10。该体系可同时实现BNL有机部分的降解和对产生的铜离子的吸附去除,120 min后,铜离子的剩余率为26.93%。
The carbonate interlayered MgAl-LDH solid hydrogen peroxide(LDHPC) has been prepared by modified low temperature crystallization method,and characterized. As a kind of oxidant,it has been used for the construction of Fenton-like system in order to degrade neutral blue(BNL). The results show that the purity of the prepared LDHPC is high. Through the hydrogen bonding,MgAl-LDH is hydrogenated with hydrogen peroxide,and the mass fraction of H_2O_2 is 13.55%. The adequate pH range of the heterogeneous Fenton-like system using LDHPC as oxidant is 2-10.This system can simultaneously realize the degradation of the organic part of BNL and the adsorptive removal of the produced copper ions. The residual rate of copper ions is 26.93% in 120 min.
The carbonate interlayered MgAl-LDH solid hydrogen peroxide(LDHPC) has been prepared by modified low temperature crystallization method,and characterized. As a kind of oxidant,it has been used for the construction of Fenton-like system in order to degrade neutral blue(BNL). The results show that the purity of the prepared LDHPC is high. Through the hydrogen bonding,MgAl-LDH is hydrogenated with hydrogen peroxide,and the mass fraction of H_2O_2 is 13.55%. The adequate pH range of the heterogeneous Fenton-like system using LDHPC as oxidant is 2-10.This system can simultaneously realize the degradation of the organic part of BNL and the adsorptive removal of the produced copper ions. The residual rate of copper ions is 26.93% in 120 min.
引文
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[2]Bayramoglu G,Akbulut A,Liman G,et al.Removal of metal complexed azo dyes from aqueous solution using tris(2-aminoethyl)amine ligand modified magnetic p(GMA-EGDMA)cationic resin:Adsorption,isotherm and kinetic studies[J].Chemicla Engineering Research&Design,2017,124:85-97.
[3]El-Wakiel N A,Rizk H F,Ibrahim S A.Synthesis and characterization of metal complexes of azo dye based on 5-nitro-8-hydroxyquinoline and their applications in dyeing polyester fabrics[J].Applied Organometallic Chemistry,2017,31(10):e3723.
[4]Mofrad M R,Akbari H,Miranzadeh M B,et al.Evaluation of efficacy of advanced oxidation processes Fenton,Fenton-like and photo-Fenton for removal of phenol from aqueous solutions[J].Journal Chemical Society of Pakistan,2015,37(2):266-271.
[5]Garzacampos B,Brillas E,Hernández R A,et al.Salicylic acid degradation by advanced oxidation processes.Coupling of solar photoelectro-Fenton and solar heterogeneous photocatalysis[J].Journal of Hazardous Materials,2016,319:34-42.
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[7]Wang Leiqing,Shi Zhongfen,Bi Xianjun.Preparation of copper doped TiO2photo-catalysts with microwave irradiation in ionic liquid and microwave enhanced photo-catalytic activity[J].Applied Chemical Industry,2014,41:1187-1192.
[8]Park M,Anumol T,Daniels K D,et al.Predicting trace organic compound attenuation by ozone oxidation:Development of indicator and surrogate models[J].Water Research,2017,119:21-32.
[9]Lu Mingchun,Chen J N,Chang C P.Oxidation of dichlorvos with hydrogen peroxide using ferrous ion as catalyst[J].Journal of Hazardous Materials,1999,65(3):277-288.
[10]Ma Jiahai,Song Wenjing,Chen Chuncheng,et al.Fenton degradation of organic compounds promoted by dyes under visible irradiation[J].Environmental Science&Technology,2005,39(15):5810.
[11]Wang Qian,Tian Senlin,Long Jian,et al.Use of Fe(Ⅱ)Fe(Ⅲ)-LDHs prepared by co-precipitation method in a heterogeneousFenton process for degradation of Methylene Blue[J].Catalysis Today,2014,224(4):41-48.
[12]Zhang Hui,Fei Chengzhi,Zhang Daobin,et al.Degradation of 4-nitrophenol in aqueous medium by electro-Fenton method[J].Journal of Hazardous Materials,2007,145(1/2):227-232.
[13]Zhao Ce,Zeng Hongyan,Huang Yan,et al.Preparation of Mg Fehydrotalcites and their catalytic performance in synthesis of biodiesel oil from chlorella protothecoides oil[J].Journal of Fuel Chemistry&Technology,2012,114(15):6869-6877.-----------