摘要
考察了UV/Fe(Ⅲ)-草酸盐配合物对水中偶氮染料的光氧化脱色的影响因素。结果表明,UV/Fe(Ⅲ)草酸盐配合物体系对偶氮染料的脱色效果明显高于UV和UV/Fe(Ⅲ)体系。脱色率受pH影响显著,在pH介于3～4范围内,脱色效果最佳,pH大于4时,脱色率急剧下降。Fe(Ⅲ)和草酸浓度对脱色率亦有较大影响,本实验条件下,以Fe(Ⅲ)和草酸的摩尔比为1∶12.
Decolourization of azo dye wastewater by UV/Fe-oxalate complex is studied in this paper.The results show that the decolourization efficiency of azo dye by UV/Fe oxalate complex(Ⅲ) is higher than that by UV and UV/Fe(Ⅲ).The effect of pH on decolourization efficiency is obvious.The decolourization efficiency is optimum when pH is between 3 and 4.When pH is more than 4,the decolourization efficiency decreases quickly.Fe(Ⅲ) and oxalic acid concentration affect decolourization efficiency too.Under this experimental condition ,the optimum mole ratio of Fe(Ⅲ) and oxalic acid is 1∶12.7.
出处
《净水技术》
CAS
2005年第3期21-23,共3页
Water Purification Technology
