Fe_(78)Si_9B_(13)非晶条带在敌敌畏农药废水处理中的应用
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摘要
为了降低农药废水对环境和人类健康的危害,研制了一种新型催化剂来降解农药废水.将Fe_(78)Si_9B_(13)非晶条带作为催化剂,采用类芬顿法研究了H2O2浓度、p H值、非晶条带用量和初始敌敌畏浓度对COD去除率的影响.结果表明,当H2O2浓度为0. 82 mol/L、p H值为2、非晶条带用量为3 g/L、初始敌敌畏浓度为600 mg/L时,10 min后COD去除率达到最大值85%,而采用传统芬顿法COD去除率仅为50%.当非晶条带循环使用5次后,其结构保持不变且降解效果未发生明显改变.
In order to reduce the harmful effect of pesticide wastewater on the environment and human health,a newcatalyst was developed for the degradation of pesticide wastewater. The Fe_(78)Si_9B_(13) amorphous ribbon was used as the catalyst,and the effect of H_2O_2 concentration,pH value,amorphous ribbon dosage and initial dichlorvos concentration on the removal rate of COD was investigated with the Fenton-like method. The results showthat when the H2 O2 concentration is 0. 82 mol/L,the pH value is 2,the amorphous ribbon dosage is 3 g/L and the initial dichlorvos concentration is 600 mg/L,the removal rate of COD reaches the maximum value of 85% after 10 min,while the removal rate of COD is only 50% through adopting the traditional Fenton method. When the amorphous ribbon is reused for five times,the structure of amorphous ribbon remains unchanged,and the degradation effect is not obviously changed.
In order to reduce the harmful effect of pesticide wastewater on the environment and human health,a newcatalyst was developed for the degradation of pesticide wastewater. The Fe_(78)Si_9B_(13) amorphous ribbon was used as the catalyst,and the effect of H_2O_2 concentration,pH value,amorphous ribbon dosage and initial dichlorvos concentration on the removal rate of COD was investigated with the Fenton-like method. The results showthat when the H2 O2 concentration is 0. 82 mol/L,the pH value is 2,the amorphous ribbon dosage is 3 g/L and the initial dichlorvos concentration is 600 mg/L,the removal rate of COD reaches the maximum value of 85% after 10 min,while the removal rate of COD is only 50% through adopting the traditional Fenton method. When the amorphous ribbon is reused for five times,the structure of amorphous ribbon remains unchanged,and the degradation effect is not obviously changed.
引文
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[3] Joshi R K,Gogate P R. Degradation of dichlorvosusing hydrodynamic cavitation based treatment strate-gies[J]. Ultrasonics Sonochemistry,2012,19(3):532-539.
[4] Oncescu T,Stefan M I,Oancea P. Photocatalytic deg-radation of dichlorvos in aqueous TiO2suspensions[J]. Environmental Science&Pollution Research In-ternational,2010,17(5):1158-1166.
[5] Golash N,Gogate P R. Degradation of dichlorvos con-taining w astew aters using sonochemical reactors[J].Ultrasonics Sonochemistry,2012,19(5):1051-1060.
[6] Lu M C,Chen J N,Chang C P. Oxidation of dichlorvosw ith hydrogen peroxide using ferrous ion as catalyst[J]. Journal of Hazardous Materials,1999,65(3):277-288.
[7]尤俊华,史艳红,庞靖,等.熔体过热度对Fe78Si9B13非晶条带磁性能的影响[J].沈阳工业大学学报,2017,39(4):378-382.(YOU Jun-hua,SHI Yan-hong,PANG Jing,et al.Effect of melt superheating on magnetic properties ofFe78Si9B13amorphous ribbon[J]. Journal of ShenyangUniversity of Technology,2017,39(4):378-382.)
[8]张昌钦. Fe基非晶合金对偶氮染料的脱色性能研究[D].沈阳:中国科学院金属研究所,2012.(ZHANG Chang-qin. Study on the decolorizationproperties of Fe-based amorphous alloys for azo dyes[D]. Shenyang:Institute of Metal Research of Chi-nese Academy of Sciences,2012.)
[9]杨红旺,罗磊,沈莹莹,等. Al-Y-Fe合金玻璃形成能力及其热稳定性[J].沈阳工业大学学报,2014,36(5):498-502.(YANG Hong-wang,LUO Lei,SHEN Ying-ying,et al. Glass forming ability and thermal stability ofAl-Y-Fe amorphous alloys[J]. Journal of ShenyangUniversity of Technology,2014,36(5):498-502.)
[10]Kruzic J J. Bulk metallic glasses as structural materials:a review[J]. Advanced Engineering M aterials,2016,18(8):1308-1331.
[11]Zhang Z,Axinte E,Ge W,et al. Microstructure,me-chanical properties and corrosion resistance of CuZrY/Al,Ti,Hf series high-entropy alloys[J]. M aterials&Design,2016,108:106-113.
[12]邱克强,王廷沣,岳春雨,等. Mg75Zn20Ca5非晶条带对氧乐果农药废水的降解作用[J].沈阳工业大学学报,2016,38(3):268-273.(QIU Ke-qiang,WANG Ting-feng,YUE Chun-yu,et al. Degradation effect of M g75Zn20Ca5amorphousribbon on omethoate pesticide w astew ater[J]. Journalof Shenyang University of Technology,2016,38(3):268-273.)
[13]Bokare A D,Choi W. Review of iron-free Fenton-likesystems for activating H2O2in advanced oxidationprocesses[J]. Journal of Hazardous M aterials,2014,275(2):121-135.
[14]Nidheesh P V,Gandhimathi R,Ramesh S T. Degrada-tion of dyes from aqueous solution by Fenton processes:a review[J]. Environmental Science&PollutionResearch International,2013,20(4):2099-2132.
[15]Patil P N,Gogate P R. Degradation of dichlorvosusing hybrid advanced oxidation processes based onultrasound[J]. Journal of Water Process Engineering,2015,20(8):58-65.
[16]Popova D,Anachkov M,Rakovsky S,et al. Decompo-sition of dimethoate and dichlorvos in aqueous solu-tions by ozonation[J]. Oxidation Communications,2013,36(2):553-561.
[17]Rahman M A,Muneer M. Photocatalysed degradationof tw o selected pesticide derivatives,dichlorvos andphosphamidon in aqueous suspensions of titanium dio-xide[J]. Desalination,2005,181(1):16-17.