摘要
分别利用Ｌａｎｇｍｕｉｒ、Ｆｒｅｕｎｄｌｉｃｈ和Ｆｒｉｔｚ－Ｓｃｈｌｕｎｄｅｒ三种等温吸附平衡关系，对粒内表面扩散控制时的搅拌槽液相吸附动力学过程进行数学模拟研究，同时指出日本《化学工学便览》第四版和第五版中关于求取粒内表面扩散系数部分内容所存在的问题。若按上述《便览》中的公式或图去求粒内有效表面扩散系数Ｄｓ，则其平均误差将可能达到３４０％左右，这是因为铃木基之和河添帮太朗等人在利用“单点拟合法”确定有效表面扩散系数Ｄｓ时，错误地将无因次吸附时间等于１．０视为吸附平衡时间所致。文中还对《便览》
The dynamic processes of intrapartticle surface diffusion controlling in a stirring tank adsorber are studied with three types of nonlinear isotherm formulae.It has been pointed out that there are some problems on effective intraparticle surface diffusivities in Handbook of Chemical Engineering of Japan (the 4th and 5th editions),that is,τ s=1 does not represent the dimensionless adsorption equilibrium time,and the average error of Ds in the handbook might reach about as high as 340%. A revision to the single point fittingmethod for Ds is also suggested in this paper.
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
1997年第1期45-49,共5页
China Environmental Science
基金
福建省自然科学基金
国家教委留学回国人员科研基金
关键词
液相吸附
粒内表面扩散
控制
数学模拟
废水处理
liquid phase adsorption,intraparticle surface diffusion controlling,stirring tank adsorber,mathematical simulation,intraparticle surface diffusivity.
