非均相Fenton技术氧化降解废水中N,N-二甲基甲酰胺  

Oxidative Degradation of N,N-Dimethylformamide in Wastewater Using Heterogeneous Fenton Technology

作　　者：李微[1] 朱明乔[1] 叶向群[1] 葛倩[1] 

机构地区：[1]浙江大学化学工程与生物工程学系,浙江杭州310027

出　　处：《化学反应工程与工艺》2015年第2期129-135,共7页Chemical Reaction Engineering and Technology

基　　金：浙江省自然科学基金(Y4080247);浙江省重大科技计划项目(2010C01035);广西石化资源加工及过程强化技术重点实验室开放课题基金(K002)

摘　　要：采用浸渍法制备了活性炭负载型Fe/C催化剂,并将其作为非均相Fenton催化剂处理废水中的N,N-二甲基甲酰胺(DMF)。探讨了溶液初始p H值、H2O2投加量、催化剂投加量和反应温度等因素对DMF去除率的影响。结果表明,对于DMF浓度为1 000 mg/L的废水,在初始p H值为2.5,H2O2投加量为3.0 g/L,催化剂投加量为6.0 g/L和反应温度为30℃的处理条件下,反应60 min,溶液化学需氧量(COD)的去除率可达到60%以上,且溶液中Fe离子浸出浓度仅为0.7 mg/L。该催化剂具有较好的稳定性,可回收使用,使用5次,溶液COD的去除率仍能达到45%以上。The Fe/C catalyst was prepared by impregnation method using activated carbon as supporter and was used as a heterogeneous Fenton catalyst for degradation of simulated N,N-Dimethylformamide（DMF） solution. The effects of initial p H value, H2O2 dosage, catalyst dosage and reaction temperature on DMF removal rate were investigated. The results showed that, under the optimal conditions of initial p H value 2.5, H2O2 dosage 3.0 g/L, catalyst dosage 6.0 g/L and reaction temperature 30 ℃, for 1 000 mg/L DMF solution, the chemical oxygen demand（COD） removal rate was above 60% with lower iron concentration 0.7 mg/L in 60 min. The catalyst had good stability and could be recycled. After 5 runs, the COD removal rate of 45.3% could still be achieved in 60 min.

关 键 词：N N-二甲基甲酰胺 废水 非均相Fenton技术 氧化降解 炭负载铁催化剂 

分 类 号：X703.1[环境科学与工程—环境工程]