摘要
研究了活性物质 Fe(Ⅲ) -草酸盐络合物和氧化剂 H2 O2 结合起来形成的光催化氧化复合体系对以活性艳红 X- 3B为代表的七种水溶性染料模拟废水的处理。在 2 5 0 W高压汞灯照射下 ,复合体系对初始浓度为 1 0 0 mg/L的染料溶液 ,处理 2 4 min后 ,脱色率均达 90 %以上 ,COD去除率为33%～ 70 %。以活性艳红 X- 3B为对象 ,研究各种反应条件对其处理效果的影响 ,结果表明 :在 p H=3～ 6范围内 ,脱色率速率较大 ;在染料初始浓度为 2 0～ 2 0 0 mg/L范围内 ,脱色速率随浓度增大而降低 ;Fe( Ⅲ ) /草酸盐配比为 40 /2 0 0 ( mmol/L)时脱色效果最好 ;H2 O2 投加量为 4～ 40 mg/L时 ,脱色速率随 H2 O2 投加量的增加而增长较快 ,在 40～ 1 0 0 mg/L时 。
At present, combination of several catalysts and oxidants in Advanced Oxidation Techniques (AOTs) is a potential research interest. We combined Fe(Ⅲ)-oxalate complex with H 2O 2 to develop a new photocatalytic oxidation system and investigated decoloration and COD removal of seven simulative dye wastewater with initial dye concentration 100mg/L. The dye wastewater could be decolorized by 90% in 24 minutes, with COD removal efficiencies ranging from 33% tp 70%. We examined the effects of pH, dye concentration, Fe(Ⅲ)/oxalate ratio and H 2O 2 concentration on decoloration of the dye C.I.reactive red 2, we also examined the effect of decoloration of the dye C.I.reactive red 2 by this combination system under solar light. The reaction mechanism of the system needs to be further investigated.
出处
《水处理技术》
CAS
CSCD
北大核心
2002年第1期45-48,共4页
Technology of Water Treatment
