Fan Huan-Jung, Shu Hung-Yee, Tajima Kiyohiko
Department of Environmental Engineering, Hungkuang University, No. 34, Chung-Chie Rd, Sha-Lu, Taichung 433, Taiwan, ROC.
J Hazard Mater. 2006 Feb 6;128(2-3):192-200. doi: 10.1016/j.jhazmat.2005.07.059. Epub 2005 Sep 8.
FeGAC/H2O2 process was developed and employed in this research for the treatment of acid back 24. The removal efficiencies of five treatment processes (GAC, FeGAC, H2O2, GAC/H2O2, and FeGAC/H2O2) were studied in this research. The adsorption capacity of granular activated carbon (GAC) was greatly improved by the coating of iron oxide on GAC surface (FeGAC). The presence of H2O2 significantly improved the removal abilities of FeGAC and GAC. For instance, at solution pH 2, the removal efficiency of FeGAC/H2O2, GAC/H2O2, H2O2, FeGAC, and GAC were 76, 74, 59, 11, and 7%, respectively. The possible removal mechanisms of FeGAC/H2O2 process were proposed in this research. When treating the actual dye contaminated wastewater, the removal efficiencies of FeGAC/H2O2 and GAC/H2O2 were approximately six times greater than that of H2O2 process.
本研究开发并采用了FeGAC/H₂O₂工艺来处理酸性废水。本研究考察了五种处理工艺（GAC、FeGAC、H₂O₂、GAC/H₂O₂和FeGAC/H₂O₂）的去除效率。通过在颗粒活性炭（GAC）表面包覆氧化铁（FeGAC），大大提高了GAC的吸附能力。H₂O₂的存在显著提高了FeGAC和GAC的去除能力。例如，在溶液pH值为2时，FeGAC/H₂O₂、GAC/H₂O₂、H₂O₂、FeGAC和GAC的去除效率分别为76%、74%、59%、11%和7%。本研究提出了FeGAC/H₂O₂工艺可能的去除机制。在处理实际染料污染废水时，FeGAC/H₂O₂和GAC/H₂O₂的去除效率约为H₂O₂工艺的六倍。
