Yi Fenyun, Chen Shuixia, Yuan Chan'e
PCFM Laboratory, OFCM Institute, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, PR China.
J Hazard Mater. 2008 Aug 30;157(1):79-87. doi: 10.1016/j.jhazmat.2007.12.093. Epub 2008 Jan 4.
The alizarin red S (ARS) in simulated dye wastewater was electrochemically oxidized using an activated carbon fiber (ACF) felt as an anode. The influence of electrolytic conditions and anode structure on the dye degradation was investigated. The results indicated that initial pH, current density and supporting electrolyte type all played an important role in the dye degradation. The chemical oxygen demand (COD) removal efficiency of dye solution in neutral or alkaline medium was about 74% after 60 min of electrolysis, which was higher than that in acidic medium. Increasing current density would lead to a corresponding increase in the dye removal. The addition of NaCl could also improve the treatment effect by enhancing the COD removal efficiency 10.3%. For ACF anodes, larger specific surface area and higher mesopore percentage could ensure more effective electrochemical degradation of dye. The data showed that the color removal efficiency increased from 54.2 to 83.9% with the specific surface area of ACF anodes increasing correspondingly from 894 to 1,682 m(2)/g.
以活性炭纤维（ACF）毡为阳极，对模拟染料废水中的茜素红S（ARS）进行电化学氧化。研究了电解条件和阳极结构对染料降解的影响。结果表明，初始pH值、电流密度和支持电解质类型在染料降解中均起着重要作用。电解60分钟后，中性或碱性介质中染料溶液的化学需氧量（COD）去除效率约为74%，高于酸性介质中的去除效率。增加电流密度会导致染料去除率相应提高。添加NaCl也可通过将COD去除效率提高10.3%来改善处理效果。对于ACF阳极，更大的比表面积和更高的中孔率可确保染料更有效地进行电化学降解。数据表明，随着ACF阳极比表面积从894相应增加到1682 m²/g，脱色效率从54.2%提高到83.9%。
