| 改性活性碳纤维电芬顿降解苯酚废水性能研究 |
| 摘要点击 2286 全文点击 1361 投稿时间：2013-11-05 修订日期：2013-12-17 |
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| 中文关键词 活性碳纤维改性 电芬顿 微波 硝酸 磷酸 氨水 |
| 英文关键词 activated carbon fiber modification electro-Fenton microwave nitric acid phosphoric acid ammonia |
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| 中文摘要 |
| 采用微波改性、硝酸改性、磷酸改性及氨水改性等方法改性活性碳纤维（ACF-0），依次标记为ACF-1、ACF-2、ACF-3和ACF-4.以改性前后的活性碳纤维为阴极，电芬顿催化处理苯酚模拟废水，考察不同的改性方法对H2O2生成量、COD去除率、苯酚去除率及其中间产物的影响. 结果表明，微波改性活性碳纤维的吸附性能及电催化活性最优，相比未改性活性碳纤维，经微波或酸碱改性后的活性碳纤维反应体系中，H2O2生成量均有所增加. 苯酚在各电芬顿催化体系中的去除率大小依次是：ACF-1>ACF-3>ACF-4>ACF-2>ACF-0； COD去除率大小依次是：ACF-1>ACF-4>ACF-3>ACF-2>ACF-0，说明微波及酸碱改性有利于提高活性碳纤维的催化性能. 此外，苯酚降解中间产物的生成也会受到改性方法的影响. |
| 英文摘要 |
| Microwave-modified activated carbon fiber (ACF-1), nitric acid-modified activated carbon fiber (ACF-2), phosphoric acid-modified activated carbon fiber (ACF-3) and ammonia-modified activated carbon fiber (ACF-4) were successfully fabricated. The electro-Fenton catalytic activities of modified activated carbon fiber were evaluated using phenol as a model pollutant. H2O2 formation, COD removal efficiency and phenol removal efficiency were investigated compared with the unmodified activated carbon fiber (ACF-0). Results indicated that ACF-1 showed the best adsorption and electrocatalytic activity. Modification was in favor of the formation of H2O2. The performance of different systems on phenol degradation and COD removal were ACF-1>ACF-3>ACF-4>ACF-2>ACF-0 and ACF-1>ACF-4>ACF-3>ACF-2>ACF-0, respectively, which confirmed that electrocatalytic activities of modified activated carbon fiber were better than the unmodified. In addition, phenol intermediates were not the same while using different modified activated carbon fibers. |
