| 近年来在电氧化和电还原方面发现了一些新型电极材料 |
| 添加时间：2019/11/28 16:54:41 浏览次数： |
| 电化学氧化法是在电解槽中，废水中的有机污染物在电极上由于发生氧化还原反应而去除，废水中污染物在电解槽的阳极失去电子被氧化外，水中的Cl-，OH-等也可在阳极放电而生成Cl2和氧而间接地氧化破坏污染物。实际上，为了强化阳极的氧化作用，减少电解槽的内阻，往往在废水电解槽中加一些氯化钠，进行所谓的电氯化，NaCl投加后在阳极可生成氯和次氯酸根，对水中的无机物和有机物也有较强的氧化作用。近年来在电氧化和电还原方面发现了一些新型电极材料，取得了一定成效，但仍存在能耗大、成本高，及存在副反应等问题。 Electrochemical oxidation method is to remove the organic pollutants in the wastewater on the electrode due to the oxidation-reduction reaction. In addition to the loss of electrons in the anode of the electrolytic cell, Cl -, oh - in the water can also be discharged on the anode to generate Cl2 and oxygen, which indirectly oxidizes and destroys the pollutants. In fact, in order to strengthen the oxidation of the anode and reduce the internal resistance of the electrolyzer, some sodium chloride is often added to the wastewater electrolyzer for the so-called electrochlorination. After the addition of NaCl, chlorine and hypochlorite can be generated at the anode, which also has strong oxygenation on inorganic and organic matters in the water. In recent years, some new electrode materials have been found in electrooxidation and electroreduction, and some achievements have been made. However, there are still problems such as high energy consumption, high cost and side reactions. |
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