NDLI: Kinetics and thermodynamics of the phosphine adsorption on the modified activated carbon

Content Provider	Springer Nature Link
Author	Ren, Bingnan
Copyright Year	2011
Abstract	The kinetics and the thermodynamics of phosphine (PH$_{3}$) adsorption on the modified activated carbon have been explained for the adsorption process of PH$_{3}$. This study investigated the kinetic and thermodynamic properties of PH$_{3}$ adsorption on the activated carbon impregnated with 5% HCl solution. The thermodynamic properties including PH$_{3}$ adsorption isotherm and adsorption heat were separately investigated at 20°C, 70°C, 90°C. The results showed that the Freundlich-type isotherm equation described the isotherms well. The adsorption capacity increased with increasing temperature between 20°C and 70°C. Between 70°C and 90°C, the adsorption capacity decreased obviously with increasing temperature. The adsorption capacity reached the maximum at 70°C. By analyzing the results of the kinetics and the thermodynamics, we found that the adsorption of PH$_{3}$ was dominated by physical adsorption at the lower temperature (20°C). Then with increasing temperature, chemical adsorption gradually dominated in the adsorption process. The adsorption capacity decreased at above 70°C is due to the exothermic effects in the process of adsorption.
Starting Page	203
Ending Page	208
Page Count	6
File Format	PDF
ISSN	20950179
Journal	Frontiers of Chemical Engineering in China
Volume Number	5
Issue Number	2
e-ISSN	16737474
Language	English
Publisher	SP Higher Education Press
Publisher Date	2011-03-21
Publisher Institution	Chinese Universities
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	adsorption PH$_{3}$ activated carbon kinetics thermodynamics Nanotechnology Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Chemical Engineering

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