Guinea Elena, Brillas Enric, Centellas Francesc, Cañizares Pablo, Rodrigo Manuel A, Sáez Cristina
Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Barcelona, Spain.
Water Res. 2009 May;43(8):2131-8. doi: 10.1016/j.watres.2009.02.025. Epub 2009 Feb 27.
The treatment of enrofloxacin synthetic wastewaters using conductive-diamond electrochemical oxidation (CDEO), ozonation and Fenton oxidation has been studied. Results show that the three technologies can reduce the organic content of enrofloxacin synthetic wastewaters but with different performances. CDEO was the most efficient technology in terms of mineralization but not on COD removal, which was more efficiently achieved by ozonation. This indicates that ozonation is efficient in the breakage of the complex molecules but not on the removal of final carboxylic acids. The high initial efficiency in terms of oxidant-use obtained by Fenton oxidation evidences that it is very efficient in the removal of the enrofloxacin, although it rapidly leads to the formation of refractory compounds to the treatment. This indicates the significance of other oxidation mechanisms (e.g. coagulation) that enhance the results obtained by the expected hydroxyl-mediated oxidation. Ammonium ions were the primary product species in CDEO and nitrate ions in ozonation, whereas Fenton effluents contained similar amounts of both nitrogen ionic species.
研究了采用导电金刚石电化学氧化（CDEO）、臭氧化和芬顿氧化法处理恩诺沙星合成废水。结果表明，这三种技术都能降低恩诺沙星合成废水的有机物含量，但性能不同。就矿化而言，CDEO是最有效的技术，但对化学需氧量（COD）的去除效果不佳，臭氧化在去除COD方面更有效。这表明臭氧化在分解复杂分子方面有效，但对最终羧酸的去除效果不佳。芬顿氧化在氧化剂使用方面的高初始效率表明，它在去除恩诺沙星方面非常有效，尽管它会迅速导致形成难处理的化合物。这表明其他氧化机制（如混凝）对于增强预期的羟基介导氧化所获得的结果具有重要意义。铵离子是CDEO中的主要产物物种，而臭氧化中的主要产物是硝酸根离子，而芬顿氧化出水所含的两种氮离子物种数量相似。
