制备了碳、聚四氟乙烯质量比为4:1的C/PTFE气体扩散电极,并将其作为阴极与Ti/RuO2阳极构成电解槽,在阴阳极之间放置纯棉隔膜,在0.1mol/L Na2SO4溶液中电解20分钟,阴极室HO2-浓度为56mg/L.将隔膜电解槽应用于苯酚的电催化氧化,研究了阴、阳极协同作用电催化氧化降解水中苯酚的效果.实验结果表明,在电解反应初期,苯酚去除效率及COD和TOC的去除率随着电解时间的增加而增大,电解80分钟后,三者的变化趋势减缓,电解100分钟后,阴极室、阳极室苯酚的去除率分别为92%、97%;阴、阳极室COD去除率分别达到86%、70%;TOC去除率分别达到84%、68%.阴极室内,氧在阴极还原生成的碱性过氧化氢(HO2-)导致苯酚的矿化效果优于阳极的氧化作用.
参考文献
| [1] | 周明华,吴祖成,汪大羽.电化学高级氧化工艺降解有毒难生化有机废水[J].化学反应工程与工艺,2001(03):263-271. |
| [2] | Yao-Hui Huang;Shanshan Chouv;Ming-Ging Perng;Gaw-Hao Huang;Sheng-Shung Cheng .Case study on the bioeffluent of petrochemical wastewater by electro-Fenton method[J].Water Science and Technology,1999(10/11):145-149. |
| [3] | LINSH;CHANG C C .Treatment of landfill leachate by combined electro-fenton oxidation and sequencing batch reactor method[J].Water Research,2000,34(17):4243-4249. |
| [4] | Mehmet A.Oturan;Nihal Oturan;Claude Lahitte .Production of hydroxyl radicals by electrochemically assisted Fenton's reagent Application to the mineralization of an organic micropollutant,pentachlorophenol[J].Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry,2001(1/2):96-102. |
| [5] | Marco Panizza;Giacomo Cerisola .Removal of organic pollutants from industrial wastewater by electrogenerated fenton's Reagent[J].Water research: A journal of the international water association,2001(16):3987-3992. |
| [6] | RILLASE;CASADO J .Aniline degradation by Electro-Fenton and peroxi-coagulation processes using a flow reactor for waste treatment[J].Chemosphere,2002,47:241-248. |
| [7] | Brillas E.;Casado J.;Calpe JC. .Mineralization of 2,4-D by advanced electrochemical oxidation processes[J].Water research: A journal of the international water association,2000(8):2253-2262. |
| [8] | J.Iniesta;P.A.Michaud;M.Panizza;G.Cerisola;A.Aldaz;Ch.Comninellis .Electrochemical oxidation of phenol at boron-doped diamond electrode[J].Electrochimica Acta,2001(23):3573-3578. |
| [9] | WUZucheng;ZHOU Minghua .Synergeticeffectsofanodic-cathodicelectrocatalysisforphenoldegradationinthepresenceofironⅡ[J].Chemosphere,2002,48:1089-1096. |
| [10] | FROCKEDEYE;VAN LIERDE A .Coupling of anodic and cathodic reactions for phenol electro-oxidation using three-dimensional electrodes[J].Water Research,2002,36:4169-4175. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%