摘要
考察了均相EF-Feox法(牺牲阳极法)、均相EF-Fere法和非均相电Fenton(Fe2(MoO4)3-kaolin-450)法3种电Fenton法对甲基橙偶氮染料废水的降解效果,对比了各反应体系的优缺点。与均相EF-Feox体系和均相EF-Fere体系相比,非均相电Fenton-Fe2(MoO4)3-kaolin-450体系对甲基橙的降解效果最好。当电流密度为65 mA/cm2、Fe2(MoO4)3-kaolin-450催化剂的加入量为6.6 g/L、初始pH为4.34、50 mmol/L的Na2SO4作为电解质、甲基橙的初始质量浓度为100 mg/L,甲基橙的COD去除率和脱色率分别可以达到92.48%和99.3%。将此方法应用于铬蓝黑R、橙黄Ⅱ、以及吩噻嗪类物质亚甲基蓝等染料废水体系中,同样条件下电解10 min,3者的脱色率均可以达到93%以上,说明此方法在染料废水处理中具有普遍适用性。
The degradation of azo dye methyl orange（MO） through three different electro-Fenton processes（homogeneous EF-Feox,homogeneous EF-Fere,heterogeneous EFenton-Fe2（MoO4）3-kaolin-450 system） was investigated.The advantages and disadvantages of various reaction systems were discussed.The heterogeneous EFenton-Fe2（MoO4）3-kaolin-450 process has better performance than homogeneous EF-Feox and EF-Fere process.The results showed that for methyl orange solution with initial concentration of 100 mg/L,COD removal rate and decolourization ratio was 92.48% and 99.3% when Fe2（MoO4）3kaolin-450 dosage was 6.6 g/L and current density was 65 mA/cm2in 50 mmol/L Na2SO4with pH 4.34.In addition,in the same system and conditions,the decolorization ratio of Acid Orange II,Eeriochrome Blue Black R,and Methylene Blue were all above 93% within 10 min electrolysis,indicating the better removal efficiency of this method.
出处
《水处理技术》
CAS
CSCD
北大核心
2013年第7期17-22,共6页
Technology of Water Treatment
基金
中央高校基本科研业务费专项资金资助(GK201302013)
