摘要
以活性炭吸附罗丹明为模型体系,研究超声波对吸附作用的影响,考察了不同超声波功率下的活性炭等温吸附曲线和吸附动力曲线的变化。研究结果表明,有无超声波作用下,活性炭吸附罗丹明符合Langmuir等温线;随着超声功率的增加,最大吸附量从无超声作用的555.56 mg/L下降到0.07 kW超声作用下的400 mg/L,同样,吸附平衡系数从无超声作用的0.058下降到0.07kW超声作用下的0.14。吸附动力学研究表明,随着超声时间增长,较强的超声功率会使活性炭吸附罗丹明B的吸附速度加快,并较快达到液相平衡浓度,并且不改变吸附平衡。
Carbon adsorption of rhodamine as a model system,the effects of ultrasound on adsorption was investigated under different ultrasonic power activated carbon adsorption isotherms and dynamic curves.The results showed that with or without ultrasound,the activated carbon adsorption of Rhodamine met Langmuir adsorption equilibrium isotherms.With the increase of ultrasonic power,the maximum adsorption effects from non ultrasonic 555.56 mg/L down to 0.07 kW under ultrasound 400 mg/L.Similarly,the adsorption equilibrium coefficient from 0.058 with non ultrasonic fell to 0.14 under ultrasound 0.07 kW.The results showed that the adsorption kinetics,with the growth ultrasonic time,ultrasonic power made a strong activated carbon adsorption of Rhodamine B faster and faster to reach the equilibrium concentration of liquid and not change the equilibrium.
出处
《广州化工》
CAS
2011年第16期51-53,101,共4页
GuangZhou Chemical Industry
基金
浙江省科技创新项目基金(NO.3070JQ4111020)
关键词
超声波
活性炭
罗丹明
吸附
ultrasound
activated carbon
Rhodamine
adsorption
