Kinetic and equilibrium studies of simultaneous adsorption of monochlorophenols and chlorophenoxy herbicides on activated carbon

Low cost carbonaceous materials were evaluated for their ability to remove phenol from wastewater. The effects of adsorbents dosage, contact time and maximum adsorption capacity were investigated for granular activated carbon, powdered activated carbon, petroleum coke and multi-walled carbon nanotube (MWNT). Equilibrium studies were conducted in 50mg/L initial phenol concentration, solution pH of 5 and at temperature of 23°C. The results showed the adsorption process was fast and it reached equilibrium in 3 h. Petroleum coke and MWNT had poor adsorption which could reach the removal efficiency of phenol with 43.18% and 36.64% respectively. The granular activated carbon possessed good adsorption ability to phenol with 96.40% at the optimum dosage 5g and optimum time 90min.The powdered activated carbon was an effective adsorbent with a maximum adsorption capacity of 42.32 mg/g.

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

Chemical Engineering Journal ◽

10.1016/j.cej.2011.10.044 ◽

2011 ◽

Vol 178 ◽

pp. 461-467 ◽

Cited By ~ 38

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

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Adsorption of textile dye using para-aminobenzoic acid modified activated carbon: Kinetic and equilibrium studies

Journal of Molecular Liquids ◽

10.1016/j.molliq.2019.112075 ◽

2019 ◽

Vol 296 ◽

pp. 112075 ◽

Cited By ~ 18

Author(s):

Mu. Naushad ◽

Ayoub Abdullah Alqadami ◽

Abdullah A. Al-Kahtani ◽

Tansir Ahamad ◽

Md. Rabiul Awual ◽

...

Keyword(s):

Activated Carbon ◽

Textile Dye ◽

Aminobenzoic Acid ◽

Equilibrium Studies ◽

Modified Activated Carbon

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

E-Journal of Chemistry ◽

10.1155/2011/714808 ◽

2011 ◽

Vol 8 (s1) ◽

pp. S363-S371 ◽

Cited By ~ 9

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.

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