改性树叶对染料废水的吸附脱色研究

Modification of the Leaves on the Adsorption Decolorization of Dye Wastewater

采用的处理方法为吸附法,树叶作为吸附剂,用盐酸加以改性使其活化,在一定条件下处理染料废水,用紫外——可见分光光度计测定废水处理前后的吸光度,根据吸光度的大小计算脱色率,研究不同实验条件下的脱色率,找出最佳的实验条件.实验证明:经过化学改性的树叶对染料废水的脱色效果优于未改性的树叶,改性树叶对低浓度的染料废水有较好的脱色效果,最佳的处理浓度为30mg/L,投加量为1.0g,最佳的反应pH为7,最佳的搅拌时间为120min.

This research used processing method is adsorption method, leaves as adsorption agent, treat the dye wastewater under certain conditions, waste water treatment was determined by uv -- visible spec- trophotometer absorbance of before and after, according to the size of the absorbance decoloring rate calcu- lation, to get the best experimental conditions through different decolorization under different experimen- tal conditions. Experiments prove that： chemical modified leaves,decolorization of dye wastewater is bet- ter than that of unmodified leaves. Modified the leaves has a good decolorizing effect on low concentration dye wastewater, the best concentration is 30 mg/L, the optimum dosage is 1.0 g, the best reaction pH is 7.0, the optimum mixing time is 120 min.