摘要
制备了负载在粗孔硅胶上的含铁催化剂,将其用于非均相UV/Fenton反应体系处理聚丙烯酰胺(PAM)废水,考察了催化剂投量、H2O2投量、PAM初始浓度对PAM降解效果的影响。试验结果表明,制备的含铁催化剂具有较高的催化活性,在催化剂投量为0.67 g/L、H2O2投量为7.5 mL/L(249.75 mg/L)条件下反应120 min后,对PAM、TOC的去除率均可达70%以上,且该体系中PAM的降解规律遵循一级反应动力学方程;对PAM的降解率随其初始浓度的增加呈下降趋势。进一步研究发现,PAM的降解速率随H2O2初始浓度与PAM初始浓度之比呈线性上升规律。
Iron-containing catalysts loaded on porous silica were prepared and used to polyacrylamide （PAM） wastewater in the heterogeneous UV/Fenton reaction system. The effects of catalyst dosage, H2O2 dosage and initial PAM concentration on PAM degradation were investigated. The results show that the iron-containing catalyst has high catalytic activity, and the removal rates of PAM and TOC reach more than 70% after 120 min when the catalyst dosage is 0.67 g/L and H2O2 dosage is 7.5 mL/L （249.75 mg/L）. Moreover, the degradation of PAM is in conformity with first-order dynamics model. The degradation rate of PAM is decreased with increasing the initial PAM concentration. The degradation rate of PAM is proportional to the ratio of initial H2O2 concentration to initial PAM concentration.
出处
《中国给水排水》
CAS
CSCD
北大核心
2009年第19期68-70,共3页
China Water & Wastewater
基金
国家重点基础研究发展计划(973)项目(2004CB418505)
