Liou Rey-May, Chen Shih-Hsiung, Hung Mu-Ya, Hsu Chin-Shan, Lai Juin-Yih
Department of Environmental Resource and Management, Chia-Nan University of Pharmacy and Science, Tainan 717, Taiwan.
Chemosphere. 2005 Mar;59(1):117-25. doi: 10.1016/j.chemosphere.2004.09.080.
FeIII supported on resin as an effective catalyst for oxidation was prepared and applied for the degradation of aqueous phenol. Phenol was selected as a model pollutant and the catalytic oxidation was carried out in a batch reactor using hydrogen peroxide as the oxidant. The influent factors on oxidation, such as catalyst dosage, H2O2 concentration, pH, and phenol concentration were examined by considering both phenol conversion and chemical oxygen demand (COD) removal. The FeIII-resin catalyst possesses a high oxidation activity for phenol degradation in aqueous solution. The experimental results of this study show that almost 100% phenol conversion and over 80% COD removal can be achieved with the FeIII-resin catalyst catalytic oxidation system. A series of prepared resin were investigated for improving the oxidation efficiency. It was found that the reaction temperature and initial pH in solution significantly affected both of phenol conversion and COD removal efficiency. The activity of the catalyst significantly decreased at high pH, which was similar to the Fenton-like reaction mechanism. Results in this study indicate that the FeIII-resin catalytic oxidation process is an efficient method for the treatment of phenolic wastewater.
制备了负载在树脂上的FeIII作为一种有效的氧化催化剂，并将其应用于水中苯酚的降解。选择苯酚作为模型污染物，在间歇式反应器中以过氧化氢为氧化剂进行催化氧化。通过考虑苯酚转化率和化学需氧量（COD）去除率，研究了催化剂用量、H2O2浓度、pH值和苯酚浓度等氧化影响因素。FeIII-树脂催化剂对水溶液中苯酚的降解具有较高的氧化活性。本研究的实验结果表明，FeIII-树脂催化剂催化氧化体系可实现近100%的苯酚转化率和超过80%的COD去除率。研究了一系列制备的树脂以提高氧化效率。发现反应温度和溶液初始pH值对苯酚转化率和COD去除效率均有显著影响。在高pH值下催化剂活性显著降低，这与类芬顿反应机理相似。本研究结果表明，FeIII-树脂催化氧化工艺是处理含酚废水的有效方法。
