菌体/粉煤灰复合吸附剂吸附酸性蓝

采用菌体/粉煤灰复合吸附剂吸附酸性蓝，通过单因素实验探究其吸附条件和吸附机理。结果表明：处理模拟酸性蓝废水最佳条件为：pH值6.6（自然），投加量3 g/L，搅拌时间25 min，静置时间1 h，此时去除率在85%以上。热力学和动力学的研究结果表明，Langmuir模型和Freundlich模型均可以用来描述吸附剂对酸 性蓝的吸附，且吸附较好地符合Freundlich 等温吸附模型；吸附剂对酸性蓝的吸附属于单分子层吸附，且 其吸附过程容易进行，由 Langmuir 吸附计算得到吸附剂的最大吸附量为303.0303 mg/g。吸附剂对酸性蓝 的吸附属于Lagergren准二级吸附动力学模型，菌体/粉煤灰对酸性蓝的吸附速率控制化学吸附过程，饱和吸附 量为137.32 mg/g。

Mechanism study on acid blue adsorption on mold/fly ash composite

This study focused on the application of treating acid blue dye wastewater with a new adsorbent compound with mold/fly ash. Single factor experiments were conducted to investigate the adsorption conditions and mechanism of acid blue through. The results showed that the removing rate was above 85% under the conditions of dosage of composite absorbent 3 g/L；pH 6.6；stirring time 25 min; and standing time 1 h. The acid blue adsorption agreed with Langmuir and Freundlich adsorption models，and it fitted Freundlich thermostatic adsorption equation better. The adsorption parameters showed that the adsorption of composite adsorbent on acid blue was monolayer adsorption，and the saturated adsorption capacity can be obtained as 303.03 mg/g. The adsorption kinetic of acid blue system fitted second-order kinetics with a saturated adsorption capacity of 137.32 mg/g. The adsorption was chemic-sorption.