醌类化合物修饰电极催化强化酸性红B电解脱色研究
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摘要
考察了4种结构相似的醌类化合物(AQ,1,5-AQ,1,8-AQ和1,4,5,8-AQ)修饰电极对酸性红B电解脱色的催化强化作用。结果表明,酸性红B电解脱色的最佳条件:电解时间为4h,溶液pH值为3,电流密度为16mA/cm2;在此实验条件下,4种醌类化合物修饰电极提高酸性红B电解脱色效率为1.05~1.19倍,其大小顺序为1,8-AQ>1,5-AQ>AQ>1,4,5,8-AQ;通过测定1,8-AQ修饰电极电解酸性红B的脱色过程的UV谱图,发现其并未改变酸性红B脱色降解路径。
The catalysis and reinforcement effects of four similar quinones(AQ,1,5-AQ,1,8-AQ and 1,4,5,8-AQ)modified electrodes on the electrolyzation-decolorization of acid red B are studied.The results show that the optimum conditions for acid red B decolorization are as following:electrolyzation time of 4h,pH 3and current density of 16mA/cm2.The electrolyzation-decolorization rate of acid red B is enhanced by 1.05~1.19folds by four quinones modified electrodes under the optimum conditions.The acceleration effect is sequenced from big to small as 1,8-AQ,1,5-AQ,AQ and 1,4,5,8-AQ.UV spectra of acid red B decolorization shows that the decolorization pathway with 1,8-AQ modified electrode is consistent to that with traditional electrode.
The catalysis and reinforcement effects of four similar quinones(AQ,1,5-AQ,1,8-AQ and 1,4,5,8-AQ)modified electrodes on the electrolyzation-decolorization of acid red B are studied.The results show that the optimum conditions for acid red B decolorization are as following:electrolyzation time of 4h,pH 3and current density of 16mA/cm2.The electrolyzation-decolorization rate of acid red B is enhanced by 1.05~1.19folds by four quinones modified electrodes under the optimum conditions.The acceleration effect is sequenced from big to small as 1,8-AQ,1,5-AQ,AQ and 1,4,5,8-AQ.UV spectra of acid red B decolorization shows that the decolorization pathway with 1,8-AQ modified electrode is consistent to that with traditional electrode.
引文
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[2]SUN Jianhui,SUN Shengpeng,SUN Jingyu,et al.Degradation of azo dye acid black 1using low concentration iron of Fenton process facilitated by ultrasonic irradiation[J].Ultrasonics Sonochemistry,2007,14(6):761-766.
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[4]张国权,杨凤林.蒽醌/聚吡咯复合膜修饰电极的电化学行为和电催化活性[J].催化学报,2007,28(6):504-508.ZHANG Guoquan,YANG Fenglin.Electrochemical behavior and electrocatalytic activity of glassy carbon electrode modified by anthraquinone/polypyrrole composite film[J].Chinese Journal of Catalysis,2007,28(6):504-508.
[5]GUO Jianbo,KANG Li,YANG Jingliang,et al.Study on a novel non-dissolved redox mediator catalyzing biological denitrification(RMBDN)technology[J].Bioresource Technology,2010,101(11):4238-4241.
[6]康丽,郭建博,廉静,等.介体厌氧催化活性艳红K-2BP脱色及构效特性研究[J].环境科学,2011,32(4):1060-1065.KANG Li,GUO Jianbo,LIAN Jing,et al.Catalyst effect and the structure-activity characteristics of redox mediators on the reactive brilliant red K-2BP decolorization[J].Environmental Science,2011,32(4):1060-1065.
[7]徐敏,葛建团.偶氮染料电化学氧化脱色动力学及其影响因素[J].兰州铁道学院学报(自然科学版),2002,21(4):86-88.XU Min,GE Jiantuan.Decoloration kinetics of electrochemical oxidation of azo dye[J].Journal of Lanzhou Railway University(Natural Sciences),2002,21(4):86-88.
[8]王爱民,曲久辉,姜桂兰.电化学方法降解酸性红B研究[J].环境科学,2003,24(2):108-111.WANG Aimin,QU Jiuhui,JIANG Guilan.Study on electrochemical degradation of acid red B(ARB)[J].Environmental Science,2003,24(2):108-111.
[9]COMNINELLIS C,NERINI A.Anodic oxidation of phenol in the presence of NaCl for wastewater treatment[J].Journal of Applied Electrochemistry,1995,25(1):23-28.
[10]李海波,廉静,李敏,等.反硝化菌株GW1的筛选及特性研究[J].河北科技大学学报,2012,33(2):184-189.LI Haibo,LIAN Jing,LI Min,et al.Isolation and characteristics of denitrifying bacterium strain GW1[J].Journal of Hebei University of Science and Technology,2012,33(2):184-189.
[11]COMNINELLIS C,PULGARIN C.Anodic oxidation of phenol for waste water treatment[J].Journal of Applied Electrochemistry,1991,21(8):703-708.
[12]许海梁,杨卫身,周集体,等.偶氮染料废水的电解处理[J].化工环保,1999,19(1):32-36.XU Hailiang,YANG Weishen,ZHOU Jiti,et al.Treatment of wastewater from azo dye production by electrolysis[J].Environmental Protection of Chemical Industry,1999,19(1):32-36.
[13]许海梁,杨卫身,周集体,等.蒽醌染料的电解处理研究[J].环境保护科学,1998,24(4):15-17.XU Hailiang,YANG Weishen,ZHOU Jiti,et al.Study on treatment of anthraquinone dyes by electrochemical method[J].Environmental Protection Science,1998,24(4):15-17.
[14]李明玉,熊林,张娜,等.三维电极对水中染料降解脱色处理[J].生态环境,2005,14(3):305-308.LI Mingyu,XIONG Lin,ZHANG Na,et al.Decolorization of dye wastewater with three-dimensional electrode reactor[J].Ecology and Environment,2005,14(3):305-308.
[15]程爱华,王林红,叶向德,等.三维电极电解法处理偶氮染料废水的试验研究[J].西安建筑科技大学学报(自然科学版),2009,41(1):117-120.CHENG Aihua,WANG Linhong,YE Xiangde,et al.Treatment of azo dye wastewater by electrolysis of three 3Delectrode[J].Journal Xi′an University of Architecture and Technology(Natural Science Edition),2009,41(1):117-120.