摘要
进行了光/Fenton体系催化氧化降解染料孔雀石绿(MG)水溶液的研究,考察了光、pH值、Fe2+和H2O2投加量等因素以及阴离子的存在对MG降解率的影响。结果表明,室温(20℃)下,pH=3.5±0.1、[Fe2+]0=0.25 mmol.L-1、[H2O2]0=0.5 mmol.L-1的条件下,经氙灯(λ>290 nm)照射30 min后,MG水溶液(15 mg.L-1)的降解率达到95%以上。Cl-的存在对MG在光/Fenton体系中的降解有阻碍作用,SO42-的存在对反应基本没影响,而NO3-促进了MG的氧化降解速率。
The degradation of malachite green （MG） in aqueous solution by photo Fenton＇ s rea- gent was studied, and the influence of various factors, such as light, pH values, concentrations of Fe2＋ and H2O2, etc. , and the presence of anions on the effect of MG removal was investiga- ted. The results show that the degradation rate of MG （15 mg·L-1） is over 95 % after 30 min with Xe lamp irradiation （ λ 〉 290 nm） under the experimental conditions of pH = 3.5±0. 1, [FeZ＋]0= 0.25 mmol·L-1, [H2O2]0 = 0.5 mmol·L-1 at room temperature （20 ℃）. The degradation of MG by photo - Fenton＇ s reagent is inhibited by the presence of Cl , and no effect is observed in the presence of SO42- , while the rate of MG removal is increased in the presence of NO3 -.
出处
《大连民族学院学报》
CAS
2013年第1期8-11,共4页
Journal of Dalian Nationalities University
基金
中央高校基本科研业务费专项资金资助项目(DC110317)
大连民族学院人才启动基金资助项目(20096105)
