摘要
通过低温回流法制备了具有磁分离响应的活性碳(AC)与CoFe2O4的复合物AC/CoFe2O4(MAC)。采用批式吸附实验法对MAC吸附溶液中偶氮染料亚甲基蓝(MB)的吸附动力学过程及吸附平衡进行了研究,考察了溶液初始pH值对MAC吸附MB的影响。结果表明,MAC吸附MB的过程很快,20min几乎达到平衡。MAC吸附MB过程可以用准二级动力学方程描述。等温吸附过程服从Langmuir方程,MAC对MB的饱和吸附容量为120.48mg/g。在较低pH值时,MB吸附量较小。随着pH值的升高,MAC对MB的吸附量增大。
Activated carbon/CoFe2O4 composite（AC/CoFe2O4,MAC） with magnetic seperation performance was synthesized via a low-temperature refluxing route.Batch experiments were carried out to investigate the adsorption kinetics and equilibrium of methylene blue（MB） onto MAC.The effect of initial pH value on MB adsorbed onto MAC was evaluated.It was found that the adsorption of MB onto MAC was a very rapid process,reaching to the equilibrium within 20 min.The pseudo-second-order rate equation could describe the adsorption kinetics of the MB onto MAC.The equilibrium data could be fitted well with the Langmuir equation.The saturated adsorption capacity obtained from the Langmuir equation was 120.48 mg/g.At lower pH values,adsorption capacity of MAC for MB was small,whereas it increased with increasing pH value.
出处
《应用化学》
CAS
CSCD
北大核心
2010年第6期710-715,共6页
Chinese Journal of Applied Chemistry
基金
西华师范大学科研启动基金资助项目(07B005)
