Using cocoa (Theobroma cacao) shell-based activated carbon to remove 4-nitrophenol from aqueous solution: Kinetics and equilibrium studies

2011 ◽  
Vol 178 ◽  
pp. 461-467 ◽  
Author(s):  
Ahmad Fisal ◽  
Wan Mohd Ashri Wan Daud ◽  
Mohd Azmier Ahmad ◽  
Rosinah Radzi
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Theobroma Cacao ◽  
Equilibrium Studies ◽  
Solution Kinetics

scholarly journals Removal of Malachite Green from Aqueous Solution by Activated Carbon Developed from Cocoa (Theobroma Cacao) Shell - A Kinetic and Equilibrium Studies

2011 ◽  
Vol 8 (s1) ◽  
pp. S363-S371 ◽  
Author(s):  
C. Theivarasu ◽  
S. Mylsamy
Keyword(s):  
Experimental Data ◽  
Activated Carbon ◽  
Malachite Green ◽  
Kinetic Models ◽  
Theobroma Cacao ◽  
Second Order ◽  
Order Kinetic ◽  
Equilibrium Studies ◽  
Initial Ph ◽  
Pseudo Second Order

The removal of malachite green (MG) by cocoa (Theobroma cacao) shell activated carbon (CSAC) was investigated in present study. Adsorption studies were performed by batch experiments as a function of process parameters such as initial pH, contact time, initial concentration and adsorbent dose. A comparison of kinetic models applied to the adsorption of MG on CSAC was evaluated for the pseudo-first order and pseudo-second order kinetic models. Results showed that the pseudo-second order kinetic model was found to correlate the experimental data well. The experimental equilibrium adsorption data was represented with Langmuir, Freundlich, Tempkin, Dubinin-Radushkevich and Flory-Huggins isotherms. The experimental data obtained in the present study indicated that activated carbon developed from cocoa shell can be attractive options for dye removal from waste water.

Novel tannin-based adsorbent in removing cationic dye (Methylene Blue) from aqueous solution. Kinetics and equilibrium studies

2010 ◽  
Vol 174 (1-3) ◽  
pp. 9-16 ◽  
Author(s):  
J. Sánchez-Martín ◽  
M. González-Velasco ◽  
J. Beltrán-Heredia ◽  
J. Gragera-Carvajal ◽  
J. Salguero-Fernández
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Cationic Dye ◽  
Equilibrium Studies ◽  
Solution Kinetics
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