活性炭自水溶液吸附苯酚的热力学探讨  

Study on Thermodynamics of Phenol Adsorption from Aqueous Solution wi th Activated Carbon

作　　者：王红斌[1] 杨敏[1] 陈毅坚[1] 卢建杭[2] 刘维屏[2] 

机构地区：[1]云南民族大学化学与生物技术学院,昆明650031 [2]浙江大学环境与资源学院,杭州310027

出　　处：《云南民族大学学报（自然科学版）》2003年第4期220-222,共3页Journal of Yunnan Minzu University:Natural Sciences Edition

基　　金：云南省教育厅科学研究基金项目 ( 0 13 2 552 )

摘　　要：研究了活性炭自水溶液吸附苯酚的吸附规律和机理 ,对不同吸附温度和溶液pH值下吸附常数和热力学函数进行了估算 ,结果表明 :活性炭自水溶液吸附苯酚符合Langmuir模型 ;低温度低pH值下苯酚被吸附的量大 ,熵增效应小 ,而高温度高pH值下苯酚被吸附的量小 ,熵增效应大 。Having studied the characteristics and mechanism of phenol adsorption from aqueous solution with activated carbon and estimated adsorption constants and thermodynamic parameters in the different temperature and pH, we have obtain the results that the method of adsorbing phenol form aqueous solution to the l angmuir model. The adsorptive capacity is high and the entropy effect is lower i n the lower temperature and pH. On the contrary, the adsorptive capacity is lowe r and the entropy effect is high in the high temperature and pH. In the adsorpti on the entropy effect was decreases with the increasing of the adsorptive capac ity.

关 键 词：活性炭 苯酚 吸附热力学 吸附规律 吸附机理 LANGMUIR模型 熵增效应 吸附温度 吸附量 

分 类 号：O647.31[理学—物理化学] O642.1[理学—化学]