Mg_(75)Zn_(20)Ca_5非晶条带对氧乐果农药废水的降解作用
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摘要
为了有效降低有毒农药废水对环境造成的危害,以Mg_(75)Zn_(20)Ca_5非晶条带为催化剂,采用类Fenton法研究了模拟氧乐果农药废水的pH值、H_2O_2用量和反应时间对化学需氧量(COD)的影响.结果表明,与传统Fenton法要求废水为酸性溶液的特点相比,当类Fenton法中的废水为中性溶液时,有利于提高废水的COD去除率.当H2O2的体积分数为2%时,COD去除率可以达到最大值.COD去除率随反应时间的延长而提高,在最初的10 min内,COD去除率高达47.32%,而当反应进行30 min后,COD去除率可以达到58.46%.虽然Mg_(75)Zn_(20)Ca_5非晶条带表面形成了少量MgO,但其非晶结构基本不变.与氧乐果废水的单一降解方法相比,该类Fenton法具有一定的优越性.
In order to reduce the harmful effect caused by toxic pesticide wastewater on the environment,the Mg_(75)Zn_(20)Ca_5 amorphous ribbon was taken as the catalyst,and the effect of pH value,H_2O_2 dosage and reaction time of the simulated omethoate pesticide wastewater on the chemical oxygen demand( COD) was investigated with the Fenton-like method. The results showthat compared with the feature of traditional Fenton method where the required wastewater should be acid solution,when the wastewater used in the Fenton-like method is the neutral solution,it is beneficial to improving the removal rate of COD in the wastewater. When the volume fraction of H_2O_2 is 2%,the removal rate of COD can reach the maximum value. Moreover,the removal rate of COD increases with prolonging the reaction time. In addition,the removal rate of COD reaches as high as 47. 32% in the initial 10 minutes,and can reach 58. 46% after the reaction for 30 minutes. Although a small amount of Mg O forms on the surface of Mg_(75)Zn_(20)Ca_5 amorphous ribbon,the amorphous structure of amorphous ribbon is basically unchanged. Compared with the single degradation method for omethoate wastewater,the proposed Fenton-like method has certain superiority.
In order to reduce the harmful effect caused by toxic pesticide wastewater on the environment,the Mg_(75)Zn_(20)Ca_5 amorphous ribbon was taken as the catalyst,and the effect of pH value,H_2O_2 dosage and reaction time of the simulated omethoate pesticide wastewater on the chemical oxygen demand( COD) was investigated with the Fenton-like method. The results showthat compared with the feature of traditional Fenton method where the required wastewater should be acid solution,when the wastewater used in the Fenton-like method is the neutral solution,it is beneficial to improving the removal rate of COD in the wastewater. When the volume fraction of H_2O_2 is 2%,the removal rate of COD can reach the maximum value. Moreover,the removal rate of COD increases with prolonging the reaction time. In addition,the removal rate of COD reaches as high as 47. 32% in the initial 10 minutes,and can reach 58. 46% after the reaction for 30 minutes. Although a small amount of Mg O forms on the surface of Mg_(75)Zn_(20)Ca_5 amorphous ribbon,the amorphous structure of amorphous ribbon is basically unchanged. Compared with the single degradation method for omethoate wastewater,the proposed Fenton-like method has certain superiority.
引文
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[11]Zhao Y F,Si J J,Song J G,et al.Synthesis of Mg-Zn-Ca metallic glasses by gas-atomization and their excellent capability in degrading azo dyes[J].M aterial Science and Engineering B,2014,181:46-55.
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[14]Wang P,Bian X F,Li Y X.Catalytic oxidation of phenol in w astew ater:a new application of the amorphous Fe78Si9B13alloy[J].Chinese Science Bulletin,2012,57(1):33-40.
[15]Yang J F,Bian X F,Bai Y W,et al.Rapid organism degradation function of Fe-based alloys in high concentration w astew ater[J].Journal of Non-Crystalline Solids,2012,358:2571-2574.
[16]吕贵芬,杨涛,李建国.电化学氧化法降解高浓度氧乐果农药废水的研究[J].江西植保,2011,32(2):71-74.(LGui-fen,YANG Tao,LI Jian-guo.Degradation of omethoate w astew ater at high concentration w ith electrochemical oxidation technique[J].Jiangxi Plant Protection,2011,32(2):71-74.)
[17]相欣奕.氧化技术降解典型有机污染物研究[D].重庆:重庆大学,2013.(XIANG Xin-yi.Study on the degradation of organic pollutants in oxidation technology[D].Chongqing:Chongqing University,2013.)
[18]蒋胜韬,祝建中,管玉江,等.非均相类Fenton法降解硝基苯化工废水的效能及其机制[J].化工学报,2014,64(4):1488-1494.(JIANG Sheng-tao,ZHU Jian-zhong,GUAN Yujiang,et al.Performance of heterogeneous Fenton-like system for degradation of nitrobenzene-containing w astew ater[J].CIESC Journal,2014,64(4):1488-1494.)
[19]胡冰.超声强化臭氧化处理水中有机磷农药的研究[D].大庆:东北石油大学,2006.(HU Bing.Degradation of organophosphorus pesticides by ultrasound enhancement ozonization[D].Daqing:Northeast Petroleum University,2006.)
[20]侯纪蓉.湿式氧化法处理乐果废水[J].化工环保,1999,2(1):6-11.(HOU Ji-rong.Treatment of omethoate wastewater by w et oxidation method[J].Chemical Environmental Protection,1999,2(1):6-11.)
[21]杜婷,王三反,陈霞.固体催化改良Fenton法处理苯酚废水的研究[J].环境科学与技术,2012,35(2):160-164.(DU Ting,WANG San-fan,CHEN Xia.Treatment of phenol w astew ater w ith the improved Fenton method[J].Environment Science&Technology,2012,35(2):160-164.)
[2]Bonastre J,Sun J J,Bruna P,et al.Influence of a magnetic field applied during the quenching process on the spin density and nanoscale structure of an amorphous Fe-B ribbon[J].M aterials Letters,2012,87:131-134.
[3]魏怡芸,王敬丰,刘郭平,等.镁基非晶复合材料制备、性能及应用的研究进展[J].材料导报,2010,24(10):94-99.(WEI Yi-yun,WANG Jing-feng,LIU Guo-ping,et al.Development in fabrication,properties and application of M g-based amorphous composites[J].M aterials Review,2010,24(10):94-99.)
[4]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 of AlY-Fe amorphous alloys[J].Journal of Shenyang University of Technology,2014,36(5):498-502.)
[5]邱克强,柏笑君,尤俊华,等.Mg-Zn-Ca块体非晶合金及其强度可靠性[J].沈阳工业大学学报,2010,32(2):131-135.(QIU Ke-qiang,BAI Xiao-jun,YOU Jun-hua,et al.M g-Zn-Ca bulk metallic glasses and fracture strength reliability[J].Journal of Shenyang University of Technology,2010,32(2):131-135.)
[6]任英磊,吴妍惠,邱克强,等.镁基非晶合金复合材料的长周期结构形成规律[J].沈阳工业大学学报,2010,32(4):370-374.(REN Ying-lei,WU Yan-hui,QIU Ke-qiang,et al.Formation of long-period order structure in M g-based amorphous matrix composite[J].Journal of Shenyang University of Technology,2010,32(4):370-374.)
[7]Lin H J,Yang L Z,Wang H,et al.Phase transition and hydrogen storage properties of melt-spun M g3La Ni0.1alloy[J].International Journal of Hydrogen Energy,2012,37(1):1145-1150.
[8]Inoue A,Takeuch A.Recent development and application products of bulls glassy alloys[J].Acta Materialia,2011,59(6):2243-2267.
[9]高萌,刘诗彤,王峥,等.奇妙而未知的非晶世界[J].现代物理知识,2012,24(3):35-44.(GAO Meng,LIU Shi-tong,WANG Zheng,et al.Wonderful and unknown amorphous world[J].Modern physics,2012,24(3):35-44.)
[10]Patel R,Suresh S.Decolourization of azo dyes using magnesium-palladium system[J].Journal of Hazardous M aterials,2006,37(3):1729-1741.
[11]Zhao Y F,Si J J,Song J G,et al.Synthesis of Mg-Zn-Ca metallic glasses by gas-atomization and their excellent capability in degrading azo dyes[J].M aterial Science and Engineering B,2014,181:46-55.
[12]Wang J Q,Liu Y H,Chen M W,et al.Excellent capability in degrading azo dyes by M g Zn-based metallic glass pow ders[J].Scientific Reports,2012,2:1-3.
[13]林葆.铁基非晶材料在污水处理中的应用[D].济南:山东大学,2011.(LIN Bao.The application of amorphous materials in w astew ater treatment[D].Jinan:Shandong University,2011.)
[14]Wang P,Bian X F,Li Y X.Catalytic oxidation of phenol in w astew ater:a new application of the amorphous Fe78Si9B13alloy[J].Chinese Science Bulletin,2012,57(1):33-40.
[15]Yang J F,Bian X F,Bai Y W,et al.Rapid organism degradation function of Fe-based alloys in high concentration w astew ater[J].Journal of Non-Crystalline Solids,2012,358:2571-2574.
[16]吕贵芬,杨涛,李建国.电化学氧化法降解高浓度氧乐果农药废水的研究[J].江西植保,2011,32(2):71-74.(LGui-fen,YANG Tao,LI Jian-guo.Degradation of omethoate w astew ater at high concentration w ith electrochemical oxidation technique[J].Jiangxi Plant Protection,2011,32(2):71-74.)
[17]相欣奕.氧化技术降解典型有机污染物研究[D].重庆:重庆大学,2013.(XIANG Xin-yi.Study on the degradation of organic pollutants in oxidation technology[D].Chongqing:Chongqing University,2013.)
[18]蒋胜韬,祝建中,管玉江,等.非均相类Fenton法降解硝基苯化工废水的效能及其机制[J].化工学报,2014,64(4):1488-1494.(JIANG Sheng-tao,ZHU Jian-zhong,GUAN Yujiang,et al.Performance of heterogeneous Fenton-like system for degradation of nitrobenzene-containing w astew ater[J].CIESC Journal,2014,64(4):1488-1494.)
[19]胡冰.超声强化臭氧化处理水中有机磷农药的研究[D].大庆:东北石油大学,2006.(HU Bing.Degradation of organophosphorus pesticides by ultrasound enhancement ozonization[D].Daqing:Northeast Petroleum University,2006.)
[20]侯纪蓉.湿式氧化法处理乐果废水[J].化工环保,1999,2(1):6-11.(HOU Ji-rong.Treatment of omethoate wastewater by w et oxidation method[J].Chemical Environmental Protection,1999,2(1):6-11.)
[21]杜婷,王三反,陈霞.固体催化改良Fenton法处理苯酚废水的研究[J].环境科学与技术,2012,35(2):160-164.(DU Ting,WANG San-fan,CHEN Xia.Treatment of phenol w astew ater w ith the improved Fenton method[J].Environment Science&Technology,2012,35(2):160-164.)