Ahmad, Fisal and Daud, Wan Mohd Ashri Wan and Ahmad, Mohd Azmier and Radzi, Rosinah (2011) Using cocoa (Theobroma cacao) shell-based activated carbon to remove 4-nitrophenol from aqueous solution: Kinetics and equilibrium studies. Chemical Engineering Journal, 178. pp. 461-467. ISSN 1385-8947, DOI https://doi.org/10.1016/j.cej.2011.10.044.
Full text not available from this repository.Abstract
The cocoa shell (CS) flake was ground, sieved and pressed into pellets. The pellets were carbonized at 800 degrees C and subjected to activation at 850 degrees C under a flow of CO(2) for several activation burn off. The cocoa shell-based activated carbon (CSAC) showed moderate surface area (248 m(2) g(-1)), a low rnesoporosity ratio with a pore size in the range between 2 and 4 nm. CSAC also displays the presence of aliphatic, aromatic hydrocarbons, C=O and a near absence of C-O. CSAC was evaluated for its ability to adsorb 4-nitrophenol (4-NP). The adsorption time and initial dye concentration study on adsorption performance was carried out in a batch system. The results indicate that the Freundlich, Temkin and Langmuir isotherms fit well (R(2) > 0.9). The results from the kinetic study show that 4-NP adsorption follows pseudo-second-order and Boyd models. (C) 2011 Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Funders: | MOSTI |
| Uncontrolled Keywords: | Cocoa (Theobroma cacao) shell; Activated carbon; 4-Nitrophenol (4-NP); Langmuir; Boyd |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry T Technology > TP Chemical technology |
| Divisions: | Faculty of Engineering |
| Depositing User: | Dr Mohd Faizal Hamzah |
| Date Deposited: | 05 Nov 2015 10:46 |
| Last Modified: | 19 Oct 2018 07:16 |
| URI: | http://eprints.um.edu.my/id/eprint/14542 |
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