水中橙黄Ⅱ的粉煤灰吸附特征研究  

ADSORPTION CHARACTERISTICS OF ORANGE Ⅱ DYE IN WATER BY FLY ASH

作　　者：汪昆平[1] 杨云开[1] 王亚林[1] 郭劲松[1] 赵越[1] 黄玉新[2] 

机构地区：[1]重庆大学城市建设与环境工程学院,重庆400045 [2]成都军区工程科研设计院,云南昆明650222

出　　处：《水处理技术》2012年第10期12-16,共5页Technology of Water Treatment

基　　金：国家科技攻关计划重大项目(2006BAJ08B08);重庆市自然科学基金项目(CSTC;2008BB7299);中央高校基本科研业务基金资助项目(CDJRC10210006)

摘　　要：以火力发电厂燃煤废弃粉煤灰作吸附剂,通过批式试验,研究了粉煤灰对水中阴离子型染料橙黄Ⅱ的吸附去除规律。结果表明,粉煤灰对水中橙黄Ⅱ的吸附动力学遵循1级反应动力学模型,等温吸附服从Freundlic模型;粉煤灰投加量较大时,在相同橙黄Ⅱ含量条件下粉煤灰投加量对粉煤灰吸附容量的影响较小;在pH=4～12时,粉煤灰吸附水中橙黄Ⅱ的Freundlic模型参数a、b呈较好的线性关系;粉煤灰对水中橙黄Ⅱ的吸附总体上属于放热过程,温度在25℃时已明显构成对吸附的不利影响;随着离子强度的增加,粉煤灰对水中橙黄Ⅱ的吸附性能增强。Using the ash of abandoned burned coal of thermal power plant as adsorbent, the adsorption and removal of the anionic dye orange Ⅱ in the water by fly ash was studied in the batch experiments. The results showed that the adsorption of the anionic dye orange Ⅱ followed the pseudo-first-order reaction kinetics model; The isothermal adsorption obeyed Freundlic model. The added amount of fly ash had less effect on the adsorption capacity of orange Ⅱ at the same concentration of the dye when fly ash was used with enough dosage. At the pH of 4-12, the parameters of a and b in Freundlic model had a good linear relationship; the adsorption of orange Ⅱ in water by fly ash belonged to the exothermic process in general and the adsorption capacity decreased obviously at 25 ℃. With the increase of ionic strength, the adsorption was strengthened.

关 键 词：粉煤灰 酸性染料 橙黄Ⅱ 吸附 

分 类 号：TQ424[化学工程]