摘要
采用活性碳纤维(activated carbon fiber,ACF)静态吸附模拟废水中的喹啉,考察了吸附时间、喹啉初始浓度、温度、pH值、有机物等对吸附速率与吸附行为的影响。结果表明,ACF对喹啉的吸附速率快,30 min内基本达到平衡,初始浓度较高时,最终吸附容量较大,达210 mg/g,低温和pH值小于7时,吸附效果较好,苯酚与喹啉产生竞争吸附,配水中的吸附行为能较好的符合Langmuir等温方程,吸附动力学符合准二级动力学模型,热力学参数ΔH0、ΔG0为负值,表明该吸附是一个自发的放热过程。本研究为环境功能材料ACF应用于工业化生产提供了理论依据,有必要在此基础上进行动态吸附实验以及实际焦化废水的吸附处理实验,同时ACF成本高及脱附再生等方面问题还有待进一步深入研究。
The static adsorption of quinoline on activated carbon fiber（ACF） was studied.The factors effecting adsorption efficiency and behaviors such as time,quinoline does,temperature,pH and organic compound were investigated.The results show that quinoline adsorption capacity on ACF was up to 210 mg/g at higher concentration and adsorption efficiency decreased with an increase of temperature.It was found that ACF had good adsorption properties when pH＆lt;7.The presence of organic substances inhibits the sorption efficiency.The adsorption isotherms conform to Langmuir adsorption isotherm and the adsorption process fits a pseudo-second-order model.The sorption parameters ΔH0 and ΔG0 were both negative,so the adsorption is spontaneous and exothermic.Scientific basis is offered for environment function material ACF using in industrial production.Based on the experimental results,dynamic adsorption experiment and treatment of coke plant wastewater is necessary.In addition,the problem of the respect such as high cost and desorption regeneration of ACF remain to be further studied.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2013年第1期209-213,共5页
Chemical Industry and Engineering Progress
基金
广东省教育部产学研结合项目(2011B090400636)
亚热带建筑科学国家重点实验室开放课题(2013KB28)
关键词
活性碳纤维
喹啉
吸附
动力学
热力学
activated carbon fiber
quinoline
adsorption
kinetics
thermodynamics
作者简介
张培（1987-）,女,硕士研究生,主要研究方向为废弃物回收与循环利用.
联系人：张小平，教授。E-mail：xpzhang@seut．edu.cn。
