CAJ | 학술논문

通过静态吸附实验,研究D301树脂对钼蓝的吸附热力学和动力学.结果表明:D301对钼蓝的吸附行为符合Freundlich等温方程；在不同温度下,D301吸附钼蓝的吸附焓变△H和吸附熵变△S均为正值,而吸附自由能变△G为负值,表明吸附是一个自发的、吸热过程,升温有利于吸附.动力学研究表明,此吸附过程符合双驱动模型,吸附过程主要受粒内扩散步骤控制,经拟合获得动力学总方程.
통과정태흡부실험,연구D301수지대목람적흡부열역학화동역학.결과표명:D301대목람적흡부행위부합Freundlich등온방정；재불동온도하,D301흡부목람적흡부함변△H화흡부적변△S균위정치,이흡부자유능변△G위부치,표명흡부시일개자발적、흡열과정,승온유리우흡부.동역학연구표명,차흡부과정부합쌍구동모형,흡부과정주요수립내확산보취공제,경의합획득동역학총방정.
The adsorption behavior of D301 for molybdenum blue was investigated.The thermodynamics parameters in adsorption process were calculated and the adsorption kinetics was studied.The experimental results show that the adsorption characteristic of D301 for molybdenum blue fits well with the Freundlich adsorption isotherm equation.In the adsorption process of D301 for molybdenum blue,both the enthalpy change △H and entropy change △S are positive,while the free energy change AG is negative when temperatures are in the range of 303-333 K.It is indicated that the adsorption is a spontaneous and endothermic process,and the elevated temperatures benefit to the adsorption.Kinetic studies show that the kinetic data are well described by double driving-force model,and the adsorption rate of molybdenum blue on D301 is controlled by the intraparticle diffusion during the adsorption process.The total kinetic equation is determined.