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首页> 外文会议>Italian Conference on Chemical and Process Engineering(ICheaP-6) vol.2; 20030608-11; Pisa(IT) >Electrochemical processes for wastewater treatment
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Electrochemical processes for wastewater treatment

机译：废水处理的电化学工艺

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摘要

The electrochemical oxidation of an industrial wastewater containing naphthalene -sulfonic acids has been studied by cyclic voltammetry and bulk electrolysis using a boron-doped diamond (BDD) and a Ti-Ru-SnO_2 ternary oxide anodes under different experimental conditions. Measurements of Chemical Oxygen Demand (COD) have been used to follow the oxidation. Cyclic voltammetry have shown that at low potentials there was a decreasing of electrode activity due to the formation of a polymeric film on the surface. However, bulk electrolysis at high potential have allowed the complete removal of the COD both using a BDD anode and using Ti-Ru-SnO_2 anode in the presence of chloride ions that act as redox mediators. In particular, it has been found that faster oxidation rate have been obtained using a boron-doped diamond anodes at low current density.
机译：通过循环伏安法和本体电解，使用掺硼金刚石（BDD）和Ti-Ru-SnO_2三元氧化物阳极，在不同的实验条件下，研究了含有萘磺酸的工业废水的电化学氧化。化学需氧量（COD）的测量已用于跟踪氧化。循环伏安法表明，在低电势下，由于在表面上形成了聚合物膜，电极活性下降了。然而，在存在作为氧化还原介体的氯离子的情况下，在高电势下大量电解已允许使用BDD阳极和使用Ti-Ru-SnO_2阳极完全去除COD。特别地，已经发现使用硼掺杂的金刚石阳极以低电流密度获得了更快的氧化速率。

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