改性粉煤灰对酸性黑10B的脱色效果  

Decolorization Eficiency of the Acid Black 10B by the Modified Fly Ash

作　　者：翟永清[1] 孙明涛[1] 仇满德[1] 郭冰[1] 

机构地区：[1]河北大学化学与环境科学学院,河北保定071002

出　　处：《河北大学学报（自然科学版）》2008年第5期507-511,541,共6页Journal of Hebei University(Natural Science Edition)

基　　金：河北省教育厅博士基金资助项目(B2004205);河北大学研究基金资助项目(y2004024)

摘　　要：以H2SO4为改性剂对粉煤灰进行活化处理，用活化后的粉煤灰对酸性黑10B水溶性模拟染料废水进行脱色处理．研究了各种反应条件对脱色效果的影响，并对活化机理和吸附机理进行了探讨．结果表明：粉煤灰经质量分数为50％的H2SO4活化后，在染料的初始质量浓度为10mg／L，灰水质量浓度为12．5g／L，pH=1～5，反应时间为120min的条件下，脱色率可达94％以上．说明粉煤灰经改性后，对染料废水有很好的脱色效果，在造纸废水、纺织印染废水的处理上有广泛的应用前景．Activation treatment with H2SO4 acid modifier to the fly ash and the decolorization treatment with the activated fly ash to the acid black 10B, water-soluble simulated dyestuffs wastewater, have been implemented. Treatment effects under various reaction conditions have been studied and the activation mechanism to- gether with the adsorption mechanism has been investigated. The results show that the appropriate conditions are as follows： a2so4 modifier＇s mass fraction is 50 %, mass concentration of ash solution is 12.5 g/L pH = 1 5, t = 120 min. When the initial concentration of the dye is 10 mg/L, the decolorizing rate of the dye is above 94% under these conditions. The results show that the activated fly ash has good decolorizing effect on dye wastewater. There will be broad prospects in paper-making wastewater, textile and dyestuffs wastewater treatment.

关 键 词：粉煤灰 改性剂 活化 脱色率 

分 类 号：X788[环境科学与工程—环境工程]