开发三维电极法降解苯酚新工艺,用电化学方法研究苯酚降解的机理.结果表明:采用预处理后的活性炭作为粒子电极,在进水pH值6～7、进水流量180 mL/min、水温25℃、氯化钠加入量1g/L、电流100mA的条件下,电解1.5 h后总有机碳(TOC)的去除率可以达到95％以上.电解过程活性炭阳极生成羟基自由基(OH)并吸附在活性炭上,与吸附在活性炭上的苯酚形成微电池.通过微电池反应,苯酚首先被降解成邻苯二酚、间苯二酚、对苯二酚等中间产物,进而又被矿化为CO2和H2O.同时,阳极极化曲线表明苯酚也可在阳极氧化,但羟基自由基对苯酚的降解起主要作用.
参考文献
| [1] | Bahadir K. Koerbahti;Abdurrahman Tanyolac .Continuous electrochemical treatment of phenolic wastewater in a tubular reactor[J].Water research: A journal of the international water association,2003(7):1505-1514. |
| [2] | MACGLASHAN J D;BIXBY J L;KING C J .Separation of phenols from diiute aqueous solution by use of tri-o-octyl phosphnie oxide as extractant[J].Solvent Extraction and lon Exchange,1985,3(01):1-2. |
| [3] | Ljiljana Damjanovic;Vesna Rakic;Vladislav Rac;DuSan Stosic;Aline Auroux .The investigation of phenol removal from aqueous solutions by zeolites as solid adsorbents[J].Journal of hazardous materials,2010(1/3):477-484. |
| [4] | 唐建军,袁辉洲,邓爱华,李荣先.Fe（Ⅲ）改性膨润土光催化降解水溶液中的4-氯苯酚[J].中国有色金属学报,2007(10):1723-1727. |
| [5] | 陈元彩,陈竹,蓝惠霞,付时雨,郭静.微氧条件下固定化颗粒污泥的氯酚降解及菌群结构[J].华南理工大学学报（自然科学版）,2006(09):128-132. |
| [6] | 李亚峰,程琳,班福忱,张佩泽,杨世平.三相三维电极反应器处理苯酚废水[J].沈阳建筑大学学报（自然科学版）,2009(04):732-736. |
| [7] | Silvana Andreescu;Daniel Andreescu;Omowunmi A. Sadik .A new electrocatalytic mechanism for the oxidation of phenols at platinum electrodes[J].Electrochemistry communications,2003(8):681-688. |
| [8] | 陈武 .三维电极处理几种模拟有机废水研究[D].华中科技大学,2007. |
| [9] | D. Szanto;P. Trinidad;F. Walsh .Evaluation of carbon electrodes and electrosynthesis of coumestan and catecholamine derivatives in the FM01-LC electrolyser[J].Journal of Applied Electrochemistry,1998(3):251-258. |
| [10] | 夏怡,李亚峰,程琳.三维电极氧化降解苯酚废水的试验研究[J].工业水处理,2010(05):27-29,48. |
| [11] | 柴立元,尤翔宇,舒余德,杨杰,王云燕,赵娜.三维电极电化学反应器降解有机废水中的EDTA[J].中南大学学报（自然科学版）,2010(04):1240-1245. |
| [12] | 祝贞凤 .电化学方法处理高浓度有机废水设备的研究[D].青岛大学,2009. |
| [13] | 吴继勋;汪顺新;彭建明 .基于交流阻抗和数值积分方法测定腐蚀反应电阻[J].中国腐蚀与防护学报,1992,12(03):247-251. |
| [14] | Roman Flyunt;Achim Leitzke;Gertraud Mark;Eino Mvula;Erika Reisz;Roland Schick;Clemens von Sonntag .Determination of ·OH, O_2~(·-), and Hydroperoxide Yields in Ozone Reactions in Aqueous Solution[J].The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical,2003(30):7242-7253. |
| [15] | PELLER J;WIEST O;KAMAT P V .Sonolysis of 2-Dichlorophenoxyacetic acid in aqueous solutions:Evidence for-OH-radical-mediated degradation[J].The Journal of Physical Chemistry A,2001,105(13):3176-3181. |
| [16] | 吴辉煌.电化学[M].北京:化学工业出版社,2004:62-68. |
| [17] | 李荻.电化学原理[M].北京:北京航空航天大学出版社,2008:76-84. |
| [18] | 曹楚南;张鉴清.电化学阻抗谱导论[M].北京:科学出版社,2002:78-83. |
| [19] | Steve K. Johnson;Linda L. Houk;Jianren Feng;R. S. Houk;Dennis C. Johnson .Electrochemical incineration of 4-chlorophenol and the identification of products and intermediates by mass spectrometry[J].Environmental Science & Technology: ES&T,1999(15):2638-2644. |
| [20] | 盛怡 .极性负载型三维粒子电极降解苯酚废水的研究[D].上海:同济大学,2006. |
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%