Title :
Kinetics and Equilibrium Isotherms on Methyl Violet Adsorption by Arundo Donax Root Activated Carbon
Author :
Zhang, Chenglu ; Li, Yan ; Zhang, Jian ; Li, Cong
Author_Institution :
Sch. of Environ. Sci. & Eng., Shandong Univ., Jinan, China
Abstract :
Arundo donax root was used to prepare activated carbon by H3PO4 activation for the removal of methyl violet (MV). The activated carbon has a micro-mesoporous structure with BET surface area 1392 m2/g. Pseudo-second-order model could predict the adsorption kinetics for the entire process. The sorption involved several stages and the actual rate controlling step was film diffusion for the whole process. The equilibrium data were better represented by Freundlich model than Langmuir model. The adsorption of methyl violet onto Arundo donax root activated carbon was spontaneous and endothermic.
Keywords :
Langmuir-Blodgett films; adsorption; biochemistry; diffusion; hydrogen compounds; mesoporous materials; reaction kinetics; Arundo donax root; BET surface area; Freundlich model; H3PO4; Langmuir model; activated carbon; adsorption kinetics; endothermic reaction; equilibrium isotherms; film diffusion; methyl violet adsorption; micromesoporous structure; pseudo-second-order model; Absorption; Furnaces; Heat transfer; Kinetic theory; Lakes; Land surface temperature; Organic materials; Predictive models; Pulp and paper industry; Soil;
Conference_Titel :
Bioinformatics and Biomedical Engineering , 2009. ICBBE 2009. 3rd International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2901-1
Electronic_ISBN :
978-1-4244-2902-8
DOI :
10.1109/ICBBE.2009.5163004
