活性炭纤维对水中罗丹明B的吸附性能  

Adsorption propreties of Rhodamine B by activater carbon fiber in aqueous solutions

作　　者：施超[1] 冯景伟[2] 彭书传[1] 胡真虎[2] 

机构地区：[1]合肥工业大学资源与环境工程学院,合肥230009 [2]合肥工业大学土木与水利工程学院,合肥230009

出　　处：《环境化学》2013年第3期394-401,共8页Environmental Chemistry

基　　金：污染控制与资源化研究国家重点实验室开放基金(PCRRF10016);中央高校基本科研业务费专项资金(2011HGQC1029)资助

摘　　要：研究了活性炭纤维对水中罗丹明B的吸附.结果表明,pH=2时,罗丹明B的吸附量最大,并随着pH的增高吸附量随之降低;离子强度对吸附的影响不大;Langmuir等温线更适合于描述罗丹明B的吸附行为;活性炭纤维对罗丹明B的吸附量随着温度的升高逐渐增加;热力学数据表明,较高温度下,活性炭纤维对罗丹明B的吸附是自发行为,且为吸热反应;吸附动力学符合假二级动力学模型;吸附过程可以很好地用内扩散模型来说明.Activated carbon fiber（ACF） was investigated for the removal of Rhodamine B from aqueous solution.The results showed that the maximum adsorption was achieved at an optimum pH 2.The adsorption quantity decreased with the increasing pH value.Ionic strength displayed little effect on the adsorption process.The adsorption process could be depicted by Langmuir function.The adsorption amount of Rhodamine B on the ACF increased with increasing temperature.The adsorption thermodynamic data showed that in the high temperatures adsorption of Rhodamine B onto ACF was spontaneous and endothermic process.The adsorption kinetics followed pseudo-second-order rate model.Intraparticle diffusion model could well describe the adsorption process.

关 键 词：活性炭纤维 罗丹明B 吸附 

分 类 号：X50[环境科学与工程—环境工程]