| 电催化还原技术处理丙烯酸盐废水的研究 |
| 摘要点击 2738 全文点击 2121 投稿时间：2010-11-01 修订日期：2011-01-26 |
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| 中文关键词 丙烯酸盐 丙酸盐 电催化还原 钯/泡沫镍电极 产甲烷 |
| 英文关键词 acrylate propionate electrocatalytic reduction Pd/Nickel foam methane production |
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| 中文摘要 |
| 摘要：采用电催化还原技术处理高浓度丙烯酸盐废水，考察了离子交换隔膜、阴极材料等对丙烯酸盐转化的影响.结果表明，电催化还原技术可将废水中的丙烯酸盐高效还原为丙酸盐；反应器中加入阳离子交换隔膜有利于提高催化还原的电流效率；阴极极板材料对丙烯酸盐还原有很大影响.其中钯/泡沫镍电极（Pd/Nickel foam）的平均电流效率最高，达90%以上，其后依次为泡沫镍电极、不锈钢电极和碳纤维电极.经电催化还原后，废水对产甲烷菌的毒性大幅减小，生物产甲烷潜势（BMP）试验中，产甲烷速率大幅提高。 |
| 英文摘要 |
| High-concentration acrylate wastewater was treated by an electrocatalytic reduction process. The effects of the cation exchange membrane(CEM) and cathode materials on acrylate reduction were investigated. It indicated that the acrylate could be reduced to propionate acid efficiently by the electrocatalytic reduction process. The addition of CEM to separator with the cathode and anode could significantly improve current efficiency. The cathode materials had significant effect on the reduction of acrylate. The current efficiency by Pd/Nickel foam, was greater than 90%, while those by nickel foam, the carbon fibers and the stainless steel decreased successively. Toxicity of the wastewater decreased considerably and methane production rate in the biochemical methane potential(BMP) test increased greatly after the electrocatalytic reduction process. |
