Panizza M, Cerisola G
Dipartimento di Ingegneria Chimica e di Processo, P.le J. F. Kennedy 1, Genova, Italy.
Water Res. 2001 Nov;35(16):3987-92. doi: 10.1016/s0043-1354(01)00135-x.
This study was performed to investigate the treatment of an industrial wastewater mainly containing naphthalene- and anthraquinone-sulphonic acids, by electrogenerated Fenton's reagent. The hydrogen peroxide was produced in situ by electrochemical reduction of oxygen on graphite-felt cathodes and the Fe2+ ions were also regenerated by cathodic reduction of Fe3+. The influence of cathode potential, Fe2+ concentration and electrode surface pre-treatment on chemical oxygen demand (COD) removal and colour fading were studied. Results indicated that the higher COD removal was obtained in the presence of 3 mM of ferrous ions working at a constant potential of -1 V vs. SCE. Moreover, it was shown that both chemical and electrochemical pre-treatments of the cathode surface resulted in a decrease of COD depletion.
本研究旨在探讨用电生成的芬顿试剂处理主要含有萘磺酸和蒽醌磺酸的工业废水。过氧化氢通过在石墨毡阴极上电化学还原氧气原位生成，Fe2+离子也通过Fe3+的阴极还原得以再生。研究了阴极电位、Fe2+浓度和电极表面预处理对化学需氧量（COD）去除和褪色的影响。结果表明，在3 mM亚铁离子存在下，相对于饱和甘汞电极（SCE）在-1 V的恒定电位下工作，可获得更高的COD去除率。此外，研究还表明，阴极表面的化学和电化学预处理均导致COD去除率降低。
