Study on decolorization of azo dye direct sky blue 5B by resin-supported nanoscale zerovalent iron
树脂固载纳米铁对偶氮染料直接湖蓝5B的脱色性能研究

Resin-supported nanoscale zerovalent iron was prepared with FeSO4 and NaBH4 aqueous solution as precursor,and with cation exchange resin(polystyrene strong acid type) as a support.It was used to study the decolorization of azo dye direct sky blue 5B aqueous solution at room temperature.It was found that the reaction followed pseudo-first order kinetics,and in an initial pH range of 3~10,the decolorization efficiency of dye solution with a concentration of 50 mg/L could reach above 83% within 14 min.The supp...