利用钛基DSA类金属氧化物电极对含硝基苯类废水进行了电化学深度氧化处理,并用高效液相色谱分别对阴、阳极产物进行了分析.结果表明,硝基苯最终被深度氧化为CO2,H2O,有中间产物--埘硝基酚出现,无其他新物质生成.电解过程中阳极酸性持续增强,阴极显碱性,阳极降解效率高于阴极.根据实验结果推测出硝基苯去除机理为:在自由基作用下,按硝基苯→硝基酚类→苯酚类→二氧化碳、水的途径降解.
参考文献
[1] | Zhao JS;Ward OP;Lubicki P;Cross JD;Huck P .Process for degradation of nitrobenzene: Combining electron beamirradiation with biotransformation[J].Biotechnology and Bioengineering,2001(4):306-312. |
[2] | RAMKRISHNA MANTHA;KEITH E TAYLOR;NIHAR BISWAS;JATINDER K BEWTRA .A Continuous System for Fe~(0) Reduction of Nitrobenzene in Synthetic Wastewater[J].Environmental Science & Technology: ES&T,2001(15):3231-3236. |
[3] | Hung H M;Ling F H;Hoffmann M R .Kinetics and mechanism of the enhanced reducfive degradation of nitrobenzene by elemental iron in the presence of ultrasound[J].Environmental Science and Technology,2000,34(09):1758-1763. |
[4] | Larsen JW.;Kim KY.;Sidovar M.;Stuart JL.;Freund M. .Mechanism of the carbon catalyzed reduction of nitrobenzene by hydrazine[J].Carbon: An International Journal Sponsored by the American Carbon Society,2000(5):655-661. |
[5] | Tayade R J;Kulkami R G;Jasra R V .Photocatalytic degradation of aqueous nitrobenzene by nanoerystalline TiO2[J].Ind Eng Chem Kes,2006,45(05):922-927. |
[6] | Miguel Rodriguez;Vitaliy Timokhin;Florian Michel;Sandra Contreras;Jaime Gimenez;Santiago Esplugas .The influence of different irradiation sources on the treatment of nitrobenzene[J].Catalysis Today,2002(2/4):291-300. |
[7] | Contreras S;Rodr1 guez M;Chamarro E et al.UV and UV/Fe(III)-enhanced ozonation of nitrobenzene[J].Journal of Photochemistry and Photobiology A:Chemistry,2001,142:79-83. |
[8] | Arslan-Alaton I.;Ferry JL. .H4SiW12O40-catalyzed oxidation of nitrobenzene in supercritical water: kinetic and mechanistic aspects[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2002(4):283-293. |
[9] | SHU-JUAN ZHANG;HONG JIANG;MIN-JIE LI;HAN-QING YU;HAO YIN;QIAN-RONG LI .Kinetics and Mechanisms of Radiolytic Degradation of Nitrobenzene in Aqueous Solutions[J].Environmental Science & Technology: ES&T,2007(6):1977-1982. |
[10] | 国家环境保护总局<水和废水监测分析方法>编委会.水和废水监测分析方法[M].北京:中国环境科学出版社,2002:467-470. |
[11] | 薛向欣;康艳红;李述贤 等.硝基苯的电化学电极反应机理研究[J].中国稀土学报,2008,26:411-415. |
[12] | Zhang S J;Jiang H;Li M J .Kinetics and mechanisms of mdiolytic degradation ofnitrobenzene in aqueous solutions[J].Environmental Science and Technology,2007,41(06):1977-1982. |
[13] | 梁世懿;成本诚.高等有机化学结构反应合成[M].北京:高等教育出版社,1993:39. |
[14] | 傅献彩;沈文霞;姚天扬.物理化学(下)[M].北京:高等教育出版社,2006:132-134. |
[15] | Matthew W. Palascak;George C. Shields .Accurate Experimental Values for the Free Energies of Hydration of H~+, OH~-, and H_3O~+[J].The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory,2004(16):3692-3694. |
[16] | Matin T W;Cline J A;Takahashi K .Pulse radiolysis of supercritical water.2.Reaction of mtrobenzene wich hydrated electrons and hydroxyl radicals[J].Journal of Physical Chemistry,2002,106:12270-12279. |
[17] | Penetrante B M;Bardsley J N;Hsiao M C .Kinetic analysis of non-thermal plasmas used for pollution contro l[J].Japanese Journal of Applied Physics,1997,36(7B):5007-5017. |
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%