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首页> 外文会议>International Symposium on Energy and Electrochemical Processes for a Cleaner Environment, 2001, San Francisco, CA >ELECTROCHEMICAL HDH OF CHLORINATED ORGANICS
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ELECTROCHEMICAL HDH OF CHLORINATED ORGANICS

机译：氯化有机物的电化学HDH

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摘要

The ability to re-cycle halogenated liquid wastes to the process, based on electrochemical hydrodehalogenation (HDH), will provide a significant economic advantage and will reduce the environmental burden. This work shows that electrochemical dechlorination of 2,4-dichlorophenol (DCP) and pentachlorophenol (PCP) using iron cathodes was effective, with almost complete dechlorination possible at low concentrations of DCP and PCP. The use of Pd catalysed iron electrodes markedly improved the dechlorination efficiency. The HDH of DCP and PCP can be achieved quite efficiently using carbon supported Pd cathodes operating with solid polymer electrolyte (SPE) cells using both cation and anion exchange membranes, without a supporting electrolyte. For the low concentrations of organic compounds treated the current efficiencies were quite respectable, ca. 10% ～ 70%. Energy consumptions were reasonable: 6 and 21 kWh/kg for DCP and PCP, respectively. Improvements in the Pd catalyst, particularly in terms of increased surface area and optimisation of bonding should realise improved performance.
机译：基于电化学加氢脱卤化（HDH），将卤化液体废物再循环到工艺中的能力将提供重大的经济优势，并将减轻环境负担。这项工作表明，使用铁阴极对2,4-二氯苯酚（DCP）和五氯苯酚（PCP）进行电化学脱氯是有效的，并且在DCP和PCP浓度较低时几乎可以完全脱氯。使用Pd催化铁电极可显着提高脱氯效率。使用碳载Pd阴极，同时使用阳离子和阴离子交换膜的固态聚合物电解质（SPE）电池，而无需支持电解质，可以非常有效地实现DCP和PCP的HDH。对于低浓度的有机化合物，目前的效率相当可观。 10％〜70％。能耗合理：DCP和PCP分别为6和21 kWh / kg。 Pd催化剂的改进，特别是在增加表面积和优化键合方面，应实现改进的性能。

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