改性粉煤灰对分散黄染料吸附性能的研究  

Study on the adsorption of disperse yellow by modified fly ash

作　　者：朱洪涛[1] 

机构地区：[1]华北电力大学环境科学与工程学院,河北保定071003

出　　处：《化学工程师》2007年第8期43-45,共3页Chemical Engineer

摘　　要：采用H_2SO_4对粉煤灰进行改性,研究了粉煤灰改性的最佳条件及其对分散黄染料的吸附脱色规律。实验结果表明,分散黄染料溶液浓度70mg·L^(-1),改性粉煤灰用量20g·L^(-1),pH值为2,吸附时间20min,脱色率可达96%以上。改性粉煤灰对分散黄染料的饱和吸附量比原粉煤灰提高一倍。随着吸附温度的升高,改性粉煤灰的吸附能力下降。The characteristic of fly ash was improved by sulfuric acid infusion. The factors on the adsorption of disperse yellow by modified fly ash were discussed. The experiment results showed that the efficiency of decoloration of 70mg·L^-1 disperse yellow can up to 96% with 20g · L^-1 modified fly ash, pH 1.5 and 20 rain adsorption time. It also indicates that the saturated adsorption quantity increases one time and the adsorption capacity declines with the temperature increased.

关 键 词：粉煤灰 硫酸 分散黄 吸附 

分 类 号：TQ536.4[化学工程—煤化学工程]