Equilibrium Isotherms of Volatile Alkanes, Alkenes, and Ketones on Activated Carbon

2009 ◽  
Vol 54 (8) ◽  
pp. 2208-2215 ◽  
Author(s):  
Ming-Hong Lai ◽  
Richard Quio Chu ◽  
Hsiu-Chu Huang ◽  
Shih-Hong Shu ◽  
Tsair-Wang Chung
Keyword(s):  
Activated Carbon ◽  
Equilibrium Isotherms ◽  
Volatile Alkanes

scholarly journals Kinetics of the Adsorption of Copper and Lead Ions from Aqueous Solution on to WD-ekstra Activated Carbon

2002 ◽  
Vol 20 (5) ◽  
pp. 441-452 ◽  
Author(s):  
Joanna Kapica ◽  
Robert Pełech ◽  
Jacek Przepiórski ◽  
Antoni W. Morawski
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Binary System ◽  
Metal Ion ◽  
Binary Systems ◽  
Considerable Influence ◽  
Equilibrium Isotherms ◽  
Adsorption Processes ◽  
Two Stages ◽  
Kinetics Of

The kinetics of the adsorption of Cu2+ and Pb2+ ions from aqueous solution on to WD-ekstra activated carbon was studied by batch methods. Such adsorption processes proceeded in two stages: an initial rapid stage followed by a slower one. The Bangham equation was used to describe the kinetics of both adsorption processes. Measurements were carried out for solutions containing only one type of metal ion and also for binary systems containing both Cu2+ and Pb2+ ions. A considerable influence of Pb2+ ions on the adsorption of Cu2+ ions was observed in the binary system. It was found that the equilibrium isotherms could be analyzed using the Langmuir, Freundlich–Langmuir and Freundlich methods.

scholarly journals Useful Adsorption Equilibriums by Means of Natural Clay

1992 ◽  
Vol 9 (4) ◽  
pp. 231-243 ◽  
Author(s):  
S. Hawash ◽  
H. El-Abd ◽  
M.S. El-Geundi ◽  
M.M. Nassar ◽  
J.Y. Farah
Keyword(s):  
Activated Carbon ◽  
Adsorption Capacity ◽  
Experimental Results ◽  
Maximum Adsorption Capacity ◽  
Natural Clay ◽  
Equilibrium Isotherms ◽  
Nickel Removal

Equilibrium isotherms have been determined for the adsorption of nickel onto natural clay. The experimental results have been fitted using the Freundlich, Langmuir and Redlich-Peterson isotherms. The maximum adsorption capacity of the clay was found to be 12.5 mg/g. The relative costs of nickel removal are reported based on adsorption capacity alone and are found to be 2.8% of that of activated carbon.

scholarly journals Kinetics Study of Methylene Blue Adsorption Onto Activated Carbon by Means of Spectrophotometry

2014 ◽  
Vol 10 (3-4) ◽  
Author(s):  
Dijana Jelić ◽  
Jelena Penavin-Škundrić ◽  
Željka Marjanović-Balaban ◽  
Vesna Antunović ◽  
Nataša Radulj
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Activated Carbons ◽  
Equilibrium Isotherms ◽  
Adsorption Phenomenon ◽  
Isotherm Equation ◽  
Concentration Estimation ◽  
Adsorption Processes ◽  
Endothermic Process ◽  
Pseudo Second Order

Goal of this work is to explore adsorption phenomenon of methylene blue on activated carbon. The adsorption process was monitored at 30 0C and 50 0C. We used spectrophotometric method for concentration estimation and on the basis of obtained results we proposed kinetics mechanism and equilibrium isotherms. Adsorption has been found to be an efficient and economically cheap process to remove pollutants such as colors, dyes and metal impurities. Adsorption processes using activated carbons are widely used to remove pollutants from wastewater. By fitting experimental results, pseudo-second order and Elovichev model gave very satisfactory results with the correlation coefficient R = 0.99994 and R = 0.99973, successively. Equilibrium isotherms of the methylene blue on the activated carbon were determined and correlated with common isotherm equation Freundlich, Langmuir and Temkin model. Rate of adsorption increased with increase in experimental temperature, which goes in favor of endothermic process. Adsorption of methylene blue onto activation carbon is happening probably through chemisorption path.

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