粉末活性炭对β-萘磺酸的吸附性能  

Study on Adsorption Behaviors of Activated Carbon to β-naphthalenesulfonic Acid

作　　者：贾冬梅[1] 孙帅[1] 李长海[2] 李跃金[1] 

机构地区：[1]滨州学院化学与化工系,山东滨州256603 [2]滨州学院化工技术研究中心,山东滨州256603

出　　处：《滨州学院学报》2010年第6期84-88,共5页Journal of Binzhou University

基　　金：山东省自然科学基金重点项目(Z2008B06);滨州市科技发展计划项目(200923)

摘　　要：通过静态吸附实验,研究了粉末活性炭对β-萘磺酸的吸附性能.结果表明,在298K时,粉末活性炭对β-萘磺酸具有较好的吸附性能,其静态饱和附容量可达到115.48 mg/g.粉末活性炭对β-萘磺酸的吸附等温线符合Langmuir模型,且属优惠型吸附.吸附过程的ΔG<0,ΔH<0,表明此反应过程是放热自发进行的,温度低于298 K时降低温度有利于吸附反应的发生.吸附动力学研究表明,粉末活性炭对β-萘磺酸的吸附过程遵循二级动力学方程.The adsorption behavior of activated carbon to β-naphthalenesulfonic acid was studied through static experiments. The results showed that the statically saturated adsorption capacit＇y was 115.48 mg/g at 298 K. The isotherms were analyzed using the Langmuir and Freundlich equations. The Langmuir equation gave the lowest errors using the sum of the squares of the errors. The negative value of AG and AH indicated that the adsorption process was exothermic and spontaneous, lower temperatures favored the process when temperature less than 298 K. The kinetics experiments showed that adsorption process data of β- naphthalenesulfonic acid on activated carbon followed pseudo-second order rate equation very well.

关 键 词：活性炭 吸附 Β-萘磺酸 

分 类 号：X783[环境科学与工程—环境工程]