摘要
利用Ce-Fe/A l2O3为催化剂的非均相光Fenton体系降解阳离子红GTL模拟废水,考察了H2O2浓度、催化剂用量、初始pH值及不同工艺过程对降解效果的影响,通过紫外-可见漫反射光谱、红外光谱、XPS手段研究铁在反应中的价态变化。结果表明,在11 W低压汞灯照射下,非均相光Fenton体系能够有效地降解结构稳定的阳离子红GTL,在pH 6,反应温度20℃,时间90 m in,Ce-Fe/A l2O32 g/L,H2O2浓度340 mg/L,含50 mg/L阳离子红GTL模拟废水TOC去除率为92.40%;光Fenton反应中Fe(Ⅲ)转化为Fe(Ⅱ)。
The degradation of cationic red GTL simulated wastewater by heterogeneous photo-Fenton reaction using Ce-Fe/Al2O3 catalyst was studied. The effects of initial concentration of H2O2 , catalyst loading, initial pH value and various processes on degradation efficiency were investigated. At the same time, Diffuse reflectance spectroscopy, Fourier transform infrared spectroscopy, XPS were adopted to study the change of Fe valency during photo-Fenton reaction. The results indicate that cationic red GTL that have stable structures can be degraded by heterogeneous photo-Fenton system, 92.40% of TOC removal rate were achieved at pH 6, 20℃ of reaction temperature, 90 min of reaction time, 2 g/L of catalyst loading, 340 mg/L of H2O2 and 11 W low mercury light to 50 mg/L GTL-containing simulated wastewater. Fe（ Ⅲ ） on irradiation changed to Fe（ Ⅱ ） during the course of the photo-Fenton reaction.
出处
《环境工程学报》
CAS
CSCD
北大核心
2007年第9期15-19,共5页
Chinese Journal of Environmental Engineering
基金
国家自然科学基金资助项目(20277010)
集美大学科研基金资助项目(C60649)
