中文摘要：

在自制的光催化反应器中，采用UV／Fe^3＋／H2O2体系光解活性艳橙X-GN模拟废水，考察了X-GN、Fe^3＋和H2O2初始浓度、初始pH值及温度对光解过程的影响。结果表明，在8W低压汞灯（λ=254nm）照射下，UV／Fe^3＋／H2O2能够有效地降解结构稳定的X-GN。在pH值3．0，温度为50℃，时间为120min，Fe^3＋和H2O2初始浓度分别为2．5×10^-5mol／L和1．5×10^-4mol／L时，含200mg／L X-GN模拟废水的色度去除率和矿化率分别达到100％和90．15％。依据离子色谱（IC）和GC／MS对X-GN降解中间产物和最终产物的鉴定，证实了X-GN氧化和TOC降解不同步的中间产物存在。

英文摘要：

Photo catalytic degradation of reactive brilliant orange X-GN dyestuff was studied in an self-made Photo catalytic reactor with UV/Fe^3＋/H2O2 and 8 W low mercury light（λ =254nm）. Then the experiments by changing the initial amount of X-GN, UV/Fe^3＋/H2O2,initial pH value and temperature were made. The results indicate that UV/Fe^3＋/H2O2 can degrade the organics which have the stable structure and 100 % of color removal and 90.15 % of TOC reduction were achieved at the conditions of pH value 3.0, temperature 50℃, time 120 min, initial concentration of Fe^3＋ 2.5 × 10^-5 mol/L, initial concentration of H2O2 1.5 × 10^-4 mol/L, with 200 mg/L X-GN-containing simulated wastewater. The first order kinetic models based on reaction process data were set up for the degradation of X-GN and TOC, respectively. The intermediates and end products during the UV/Fe^3＋/H2O2 reaction were detected by IC and GC-MS spectra. It is proved that intermediates were existed unsynchronously during X-GN oxidation and TOC degradation.