磁性活性炭吸附苯酚的初步研究  

Study on Adsorption of Phenol Using Magnetic Activated Carbon

作　　者：刘阳[1] 

机构地区：[1]同济大学环境科学与工程学院,上海200092

出　　处：《四川环境》2011年第5期1-4,共4页Sichuan Environment

摘　　要：本文研究了磁性活性炭对苯酚的吸附性能;探讨了Cd2+对苯酚在磁性活性炭上吸附的影响。目的是对磁性活性炭进行研究,以及为在实际废水中吸附处理苯酚提供参考。结果表明,磁性活性炭对苯酚的吸附过程符合拟二级动力学模型,R2为0.9935;与Freundlich吸附模型相比,Langmuir吸附模型能更好地描述磁性活性炭对苯酚的吸附行为;在不影响去除率的情况下,Cd2+的存在使苯酚吸附处理最佳浓度由30 mg/L增大至50 mg/L;同时,Cd2+对磁性活性炭和活性炭吸附苯酚分别具有促进和抑制作用。针对苯酚的吸附去除率,当无Cd2+时,磁性活性炭的比活性炭的低10.65%～20.2%;当有Cd2+时,磁性活性炭的比活性炭的高0.3%～7.71%。In this paper,the performance of phenol adsorption using Magnetic Activated Carbon（MAC） and the effect of Cd2＋ on adsorption were studied to provide reference for productive wastewater treatment using adsorption process.The results showed that the process of adsorption of phenol on MAC fitted the pseudo second order kinetic model with R2 of 0.9935;Compared with Freundlich adsorption model,Langmuir adsorption model could describe MAC adsorption of phenol better;The existence of Cd2＋ led to optimal adsorption concentration of phenol increasing from 30 to 50 mg/L without affecting the removal rate.Moreover,Cd2＋ had promotion effect on phenol adsorption on MAC while inhibitory effect on activated carbon（AC）,respectively.Removal rate of phenol adsorption without Cd2＋ on MAC was lower than on AC by 10.65%~20.2%;On the contrary,the removal rate with Cd2＋ on MAC was higher than on AC by 0.3%~7.71%.

关 键 词：磁性活性炭 苯酚 Cd2+ 

分 类 号：X703[环境科学与工程—环境工程]